summaryrefslogtreecommitdiffstats
path: root/src/filter/lightgraffiti/lightgraffiti.cpp
blob: a84932d070940e0c0e6cce02016cc4c9c2ae990b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
/*
 * Copyright (C) 2010-2011 Simon Andreas Eugster (simon.eu@gmail.com)
 * This file is a Frei0r plugin.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/**
            LIGHT GRAFFITI / LIGHT PAINTING / LUMASOL


  This effect is intended to simulate what happens when you use a shutter speed of
  e.g. 10 seconds for your camera and paint with light, like lamps, in the air
  -- just with video. It tries to remember bright spots and keeps them in a mask.
  Areas that are not very bright (i.e. background) will not sum up.

  Originally I saw this effect in some Ford Kuga commercials on YouTube when a friend
  shew me those. One of them was [1]. No information about how this effect works is given
  -- only that a guy from the Dutch PIPS:LAB[2] was involved. The technique seems to be
  slightly different though; whileas this frei0r effect works in post, the original Lumasol
  effect is said to work directly in-camera.

  Since the technique is fascinating I started writing this Open-Source effect.[3] The general
  concept is:
  1. Extract the light by using thresholding (absolute brightness and brightness change relative to
     the background image fetched from the first frame)
  2. Store the color in a light mask, and the estimated density in an alpha map (increased every time
     that a light source hits a pixel to simulate overexposure)
  3. Paint the light mask over the video image
  4. Dim the alpha map, and update the background image (moving average), if desired.
  5. Repeat for the next frame.

  The second approach (LG_ADV) is based on the observation that colour mixing does not work well
  with the above one that stores colour values and changes the brightness via an alpha map. Therefore
  the new approach directly sums up colour values detected in the light source and does not use an
  alpha map.
  * Transitions are not very smooth out-of-the-box. This is solved by multiplying the light source's
    RGB value by (r+g+b)/3 (after normalizing them to [0,1]); Darker lights will then be even darker
    and the transition to the background looks smoother.
  * Lights may look a little faint regarding color. Therefore the saturation can be increased by a custom
    factor. Saturation depends on the brightness of the light map; the darker the light is, the more
    the saturation is increased. This will, within a sensible range, make the lights look more vital.
  Dimming works by scaling each color values individually.

  If you write your own Light Graffiti effect (e.g. for After Effects) I'd very much appreciate
  to hear about it!

  -- Simon (Granjow)

  [1] http://www.youtube.com/watch?v=WVaxuIKPKvU
  [2] http://www.pipslab.org/bio/keez-duyves/
  [3] http://kdenlive.org/users/granjow/writing-light-graffiti-effect

  */
#include "frei0r.hpp"

#include <cmath>
#include <cstdio>
#include <climits>
#include <algorithm>

#define LG_ADV
//#define LG_NO_OVERLAY // Not really working yet
//#define LG_DEBUG

// Macros to extract color components
#define GETA(abgr) (((abgr) >> (3*CHAR_BIT)) & 0xFF)
#define GETB(abgr) (((abgr) >> (2*CHAR_BIT)) & 0xFF)
#define GETG(abgr) (((abgr) >> (1*CHAR_BIT)) & 0xFF)
#define GETR(abgr) (((abgr) >> (0*CHAR_BIT)) & 0xFF)

// Macro to assemble a color in RGBA8888 format
#define RGBA(r,g,b,a) ( ((r) << (0*CHAR_BIT)) | ((g) << (1*CHAR_BIT)) | ((b) << (2*CHAR_BIT)) | ((a) << (3*CHAR_BIT)) )
// Component-wise maximum
#define MAX(a,b)  ( (((((a) >> (0*CHAR_BIT)) & 0xFF) > (((b) >> (0*CHAR_BIT)) & 0xFF)) ? ((a) & (0xFF << (0*CHAR_BIT))) : ((b) & (0xFF << (0*CHAR_BIT)))) \
                  | (((((a) >> (1*CHAR_BIT)) & 0xFF) > (((b) >> (1*CHAR_BIT)) & 0xFF)) ? ((a) & (0xFF << (1*CHAR_BIT))) : ((b) & (0xFF << (1*CHAR_BIT)))) \
                  | (((((a) >> (2*CHAR_BIT)) & 0xFF) > (((b) >> (2*CHAR_BIT)) & 0xFF)) ? ((a) & (0xFF << (2*CHAR_BIT))) : ((b) & (0xFF << (2*CHAR_BIT)))) \
                  | (((((a) >> (3*CHAR_BIT)) & 0xFF) > (((b) >> (3*CHAR_BIT)) & 0xFF)) ? ((a) & (0xFF << (3*CHAR_BIT))) : ((b) & (0xFF << (3*CHAR_BIT)))) )

#define CLAMP(a) (((a) < 0) ? 0 : (((a) > 255) ? 255 : (a)))

#define ALPHA(mask,img) \
  (   ( ((uint32_t) ( ((((mask) >> (0*CHAR_BIT)) & 0xFF)/255.0) * ( ((mask) >> (0*CHAR_BIT)) & 0xFF) \
                      + (1 - (( ((mask) >> (0*CHAR_BIT)) & 0xFF)/255.0)) * ( ((img) >> (0*CHAR_BIT)) & 0xFF) )) << (0*CHAR_BIT)) \
      | ( ((uint32_t) ( ((((mask) >> (1*CHAR_BIT)) & 0xFF)/255.0) * ( ((mask) >> (1*CHAR_BIT)) & 0xFF) \
                        + (1 - (( ((mask) >> (1*CHAR_BIT)) & 0xFF)/255.0)) * ( ((img) >> (1*CHAR_BIT)) & 0xFF) )) << (1*CHAR_BIT)) \
      | ( ((uint32_t) ( ((((mask) >> (2*CHAR_BIT)) & 0xFF)/255.0) * ( ((mask) >> (2*CHAR_BIT)) & 0xFF) \
                        + (1 - (( ((mask) >> (2*CHAR_BIT)) & 0xFF)/255.0)) * ( ((img) >> (2*CHAR_BIT)) & 0xFF) )) << (2*CHAR_BIT)) \
      | ( ((uint32_t) ( ((((mask) >> (3*CHAR_BIT)) & 0xFF)/255.0) * ( ((mask) >> (3*CHAR_BIT)) & 0xFF) \
                        + (1 - (( ((mask) >> (3*CHAR_BIT)) & 0xFF)/255.0)) * ( ((img) >> (3*CHAR_BIT)) & 0xFF) )) << (3*CHAR_BIT))   )

// Screen layer mode
#define SCREEN1(mask,img) ((uint8_t) (255-(255.0-(mask))*(255.0-(img))/255.0))

// Luma calculation. Refer to the SOP/Sat filter.
#define REC709Y(r,g,b) (.2126*(r) + .7152*(g) + .0722*(b))

  struct RGBFloat {
                      float r;
                      float g;
                      float b;
                  };

class LightGraffiti : public frei0r::filter
{

public:

    LightGraffiti(unsigned int width, unsigned int height) :
            m_lightMask(width*height, 0),
            m_alphaMap(4*width*height, 0),
            m_meanInitialized(false)

    {
        m_mode = Graffiti_LongAvgAlphaCumC;
        m_dimMode = Dim_Mult;

#ifdef LG_ADV
        RGBFloat rgb0;
        rgb0.r = 0;
        rgb0.g = 0;
        rgb0.b = 0;
        m_rgbLightMask = std::vector<RGBFloat>(width*height, rgb0);

#ifdef LG_DEBUG
        for (int i = 0; i < width*height; i++) {
            if (m_rgbLightMask[i].r != 0 || m_rgbLightMask[i].g != 0 || m_rgbLightMask[i].b != 0) {
                std::cout << "ERROR: " << m_rgbLightMask[i].r;
            }
        }
#endif
#endif

#ifdef LG_NO_OVERLAY
        m_prevMask = std::vector<RGBFloat>(width*height, rgb0);
#endif

        register_param(m_pSensitivity, "sensitivity", "Sensitivity of the effect for light (higher sensitivity will lead to brighter lights)");
        register_param(m_pBackgroundWeight, "backgroundWeight", "Describes how strong the (accumulated) background should shine through");
        register_param(m_pThresholdBrightness, "thresholdBrightness", "Brightness threshold to distinguish between foreground and background");
        register_param(m_pThresholdDifference, "thresholdDifference", "Threshold: Difference to background to distinguish between fore- and background");
        register_param(m_pThresholdDiffSum, "thresholdDiffSum", "Threshold for sum of differences. Can in most cases be ignored (set to 0).");
        register_param(m_pDim, "dim", "Dimming of the light mask");
        register_param(m_pSaturation, "saturation", "Saturation of lights");
        register_param(m_pLowerOverexposure, "lowerOverexposure", "Prevents some overexposure if the light source stays steady too long (varying speed)");
        register_param(m_pStatsBrightness, "statsBrightness", "Display the brightness and threshold, for adjusting the brightness threshold parameter");
        register_param(m_pStatsDiff, "statsDifference", "Display the background difference and threshold");
        register_param(m_pStatsDiffSum, "statsDiffSum", "Display the sum of the background difference and the threshold");
        register_param(m_pReset, "reset", "Reset filter masks");
        register_param(m_pTransparentBackground, "transparentBackground", "Make the background transparent");
        register_param(m_pBlackReference, "blackReference", "Uses black as background image instead of the first frame.");
        register_param(m_pLongAlpha, "longAlpha", "Alpha value for moving average");
        register_param(m_pNonlinearDim, "nonlinearDim", "Nonlinear dimming (may look more natural)");
        m_pLongAlpha = 1/128.0;
        m_pSensitivity = 1 / 5.;
        m_pBackgroundWeight = 0;
        m_pThresholdBrightness = 450 / 765.;
        m_pThresholdDifference = 0;
        m_pThresholdDiffSum = 0;
        m_pDim = 0;
        m_pSaturation = 1 / 4.;
        m_pLowerOverexposure = 0;
        m_pStatsBrightness = false;
        m_pStatsDiff = false;
        m_pStatsDiffSum = false;
        m_pReset = false;
        m_pTransparentBackground = false;
        m_pBlackReference = false;
        m_pLongAlpha = 0;
        m_pNonlinearDim = 0;

    }

    ~LightGraffiti()
    {
        // I was told that a std::vector does not need to be deleted --
        // therefore nothing to do here!
    }

    enum GraffitiMode { Graffiti_max, Graffiti_max_sum, Graffiti_Y, Graffiti_Avg, Graffiti_Avg2,
                        Graffiti_Avg_Stat, Graffiti_AvgTresh_Stat, Graffiti_Max_Stat, Graffiti_Y_Stat, Graffiti_S_Stat,
                        Graffiti_STresh_Stat, Graffiti_SDiff_Stat, Graffiti_SDiffTresh_Stat,
                        Graffiti_SSqrt_Stat,
                        Graffiti_LongAvg, Graffiti_LongAvg_Stat, Graffiti_LongAvgAlpha, Graffiti_LongAvgAlpha_Stat,
                        Graffiti_LongAvgAlphaCumC };
    enum DimMode { Dim_Mult, Dim_Sin };





    virtual void update()
    {
        double sensitivity = m_pSensitivity * 5;
        double thresholdBrightness = m_pThresholdBrightness * 765;
        double thresholdDifference = m_pThresholdDifference * 255;
        double thresholdDiffSum = m_pThresholdDiffSum * 765;
        double saturation = m_pSaturation * 4;
        double lowerOverexposure = m_pLowerOverexposure * 10;

        // Copy everything to the output image.
        // Most of the image will very likely not change at all.
        std::copy(in, in + width*height, out);

#ifdef LG_ADV
        RGBFloat rgb0;
        rgb0.r = 0;
        rgb0.g = 0;
        rgb0.b = 0;
#endif

        if (m_pNonlinearDim) {
            m_dimMode = Dim_Sin;
        } else {
            m_dimMode = Dim_Mult;
        }


        /*
         Refresh the background image
         */
        if (!m_meanInitialized || m_pReset) {
            if (m_pBlackReference) {
                // Do not use the first frame from the movie as background image but plain black
                // to calculate the added light. Useful e.g. when dealing with still images.
                m_longMeanImage = std::vector<float>(width*height*3, 0);
            } else {
                m_longMeanImage = std::vector<float>(width*height*3);
                for (int pixel = 0; pixel < width*height; pixel++) {
                    m_longMeanImage[3*pixel+0] = GETR(in[pixel]);
                    m_longMeanImage[3*pixel+1] = GETG(in[pixel]);
                    m_longMeanImage[3*pixel+2] = GETB(in[pixel]);
                }
            }
            m_meanInitialized = true;
        } else {
            // Calculate the mean image to estimate the background. If alpha is set > 0, bright light sources
            // moving into the image and standing still will eventually be treated as background.
            if (m_pLongAlpha > 0) {
                for (int pixel = 0; pixel < width*height; pixel++) {
                    m_longMeanImage[3*pixel+0] = (1-m_pLongAlpha) * m_longMeanImage[3*pixel+0] + m_pLongAlpha * GETR(in[pixel]);
                    m_longMeanImage[3*pixel+1] = (1-m_pLongAlpha) * m_longMeanImage[3*pixel+1] + m_pLongAlpha * GETG(in[pixel]);
                    m_longMeanImage[3*pixel+2] = (1-m_pLongAlpha) * m_longMeanImage[3*pixel+2] + m_pLongAlpha * GETB(in[pixel]);
                }
            }
        }


        /*
         Light mask dimming
         */
        if (m_pDim > 0) {
            // Dims the light mask. Lights will leave fainting trails.

            float factor = 1-m_pDim;

            /* Gnu Octave:
               range=linspace(0,1,100);
               % Sin
               plot(range,sin(range*pi/2).^.5)
               plot(range,sin(range*pi/2).^.25)
            */

            switch (m_dimMode) {

                case Dim_Mult:
#ifdef LG_ADV
                    for (int i = 0; i < m_rgbLightMask.size(); i++) {
                        m_rgbLightMask[i].r *= factor;
                        m_rgbLightMask[i].g *= factor;
                        m_rgbLightMask[i].b *= factor;
                    }
#else
                    for (int i = 0; i < width*height; i++) {
                        m_alphaMap[4*i + 0] *= factor;
                        m_alphaMap[4*i + 1] *= factor;
                        m_alphaMap[4*i + 2] *= factor;
                        m_alphaMap[4*i + 3] *= factor;
                    }
#endif
                    break;


                case Dim_Sin:
#ifdef LG_ADV
                    for (int i = 0; i < m_rgbLightMask.size(); i++) {
                        // Red
                        if (m_rgbLightMask[i].r < 1) {
                            m_rgbLightMask[i].r *= pow(sin(m_rgbLightMask[i].r * M_PI/2), m_pDim) - .01;
                        } else {
                            m_rgbLightMask[i].r *= factor;
                        }
                        if (m_rgbLightMask[i].r < 0) { m_rgbLightMask[i].r = 0; }

                        // Green
                        if (m_rgbLightMask[i].g < 1) {
                            m_rgbLightMask[i].g *= pow(sin(m_rgbLightMask[i].g * M_PI/2), m_pDim) - .01;
                        } else {
                            m_rgbLightMask[i].g *= factor;
                        }
                        if (m_rgbLightMask[i].g < 0) { m_rgbLightMask[i].g = 0; }

                        // Blue
                        if (m_rgbLightMask[i].b < 1) {
                            m_rgbLightMask[i].b *= pow(sin(m_rgbLightMask[i].b * M_PI/2), m_pDim) - .01;
                        } else {
                            m_rgbLightMask[i].b *= factor;
                        }
                        if (m_rgbLightMask[i].b < 0) { m_rgbLightMask[i].b = 0; }
                    }
#else
                    // Attention: Since Graffiti_LongAvgAlphaCumC only makes use of the first alpha channel
                    // the other channels are not calculated here due to efficiency reasons.
                    // May have to be adjusted if required.
                    for (int i = 0; i < width*height; i++) {
                        if (m_alphaMap[4*i + 0] < 1) {
                            m_alphaMap[4*i + 0] *= pow(sin(m_alphaMap[4*i + 0] * M_PI/2), m_pDim) - .01;
                        } else {
                            m_alphaMap[4*i + 0] *= factor;
                        }
                        if (m_alphaMap[4*i + 0] < 0) { m_alphaMap[4*i + 0] = 0; }
                    }
#endif
                    break;
            }

        }



        /*
         Reset all masks if desired
         (mainly for parameter adjustments when working in the NLE)
         */
        if (m_pReset) {
#ifdef LG_ADV
            m_rgbLightMask = std::vector<RGBFloat>(width*height, rgb0);
#else
            std::fill(&m_lightMask[0], &m_lightMask[width*height - 1], 0);
            std::fill(&m_alphaMap[0], &m_alphaMap[width*height*4 - 1], 0);
#endif
            // m_longMeanImage has been handled above already (set to the current image).
        }


        int r, g, b;
        int maxDiff, temp, sum;
        int min;
        int max;
        float f, y;
        uint32_t color;
        float fr, fg, fb, sr, sg, sb, fy, fsat;

#ifdef LG_DEBUG
        int deCount = 0;
#endif


        switch (m_mode) {
            /*
             Lots of testing modes here!
             */
            case Graffiti_max:
                for (int pixel = 0; pixel < width*height; pixel++) {

                    if (
                            (GETR(out[pixel]) == 0xFF
                             || GETG(out[pixel]) == 0xFF
                             || GETB(out[pixel]) == 0xFF)
                        ){
                        m_lightMask[pixel] |= out[pixel];
                    }
                    if (m_lightMask[pixel] != 0) {
                        out[pixel] = m_lightMask[pixel];
                    }
                }
                break;
            case Graffiti_max_sum:
                for (int pixel = 0; pixel < width*height; pixel++) {

                    if (
                            (GETR(out[pixel]) == 0xFF
                             || GETG(out[pixel]) == 0xFF
                             || GETB(out[pixel]) == 0xFF)
                            &&
                            (GETR(out[pixel])
                             + GETG(out[pixel])
                             + GETB(out[pixel])
                             > 0xFF + 0xCC + 0xCC)
                        ){
                        m_lightMask[pixel] |= out[pixel];
                    }
                    if (m_lightMask[pixel] != 0) {
                        out[pixel] = m_lightMask[pixel];
                    }
                }
                break;

            case Graffiti_Y:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    if (
                               .299*GETR(out[pixel])/255.0
                             + .587 * GETG(out[pixel])/255.0
                             + .114 * GETB(out[pixel])/255.0
                             >= .85
                        ){
                        m_lightMask[pixel] |= out[pixel];
                    }
                    if (m_lightMask[pixel] != 0) {
                        out[pixel] = m_lightMask[pixel];
                    }
                }
                break;

            case Graffiti_Max_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    if (GETR(out[pixel]) == 0xFF || GETG(out[pixel]) == 0xFF || GETB(out[pixel]) == 0xFF) {
                        out[pixel] = 0xFFFFFFFF;
                    } else {
                        out[pixel] = 0;
                    }
                }
                break;
            case Graffiti_Y_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    temp = .299*GETR(out[pixel]) + .587 * GETG(out[pixel]) + .114 * GETB(out[pixel]);
                    temp = CLAMP(temp);
                    out[pixel] = RGBA(temp, temp, temp, 0xFF);
                }
                break;
            case Graffiti_S_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    min = GETR(out[pixel]);
                    max = GETR(out[pixel]);
                    if (GETG(out[pixel]) < min) min = GETG(out[pixel]);
                    if (GETG(out[pixel]) > max) max = GETG(out[pixel]);
                    if (GETB(out[pixel]) < min) min = GETB(out[pixel]);
                    if (GETB(out[pixel]) > max) max = GETB(out[pixel]);
                    if (min == 0) { out[pixel] = 0; }
                    else {
                        temp = 255.0*(max-min)/(float)max;
                        temp = CLAMP(temp);
                        out[pixel] = RGBA(temp, temp, temp, 0xFF);
                    }
                }
                break;
            case Graffiti_STresh_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    min = GETR(out[pixel]);
                    max = GETR(out[pixel]);
                    if (GETG(out[pixel]) < min) min = GETG(out[pixel]);
                    if (GETG(out[pixel]) > max) max = GETG(out[pixel]);
                    if (GETB(out[pixel]) < min) min = GETB(out[pixel]);
                    if (GETB(out[pixel]) > max) max = GETB(out[pixel]);
                    if (min == 0 || max < 0x80) { out[pixel] = 0; }
                    else {
                        temp = 255.0*((float)max-min)/max;
                        temp = CLAMP(temp);
                        out[pixel] = RGBA(temp, temp, temp, 0xFF);
                    }
                }
                break;
            case Graffiti_SDiff_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    min = GETR(out[pixel]);
                    max = GETR(out[pixel]);
                    if (GETG(out[pixel]) < min) min = GETG(out[pixel]);
                    if (GETG(out[pixel]) > max) max = GETG(out[pixel]);
                    if (GETB(out[pixel]) < min) min = GETB(out[pixel]);
                    if (GETB(out[pixel]) > max) max = GETB(out[pixel]);
                    int sat;
                    if (min == 0) { sat = 0; }
                    else {
                        temp = 255.0*(max-min)/(float)max;
                        temp = CLAMP(temp);
                        sat = RGBA(temp, temp, temp, 0xFF);
                    }
                    min = m_longMeanImage[3*pixel+0];
                    max = m_longMeanImage[3*pixel+0];
                    if (m_longMeanImage[3*pixel+1] < min) min = m_longMeanImage[3*pixel+1];
                    if (m_longMeanImage[3*pixel+1] > max) max = m_longMeanImage[3*pixel+1];
                    if (m_longMeanImage[3*pixel+2] < min) min = m_longMeanImage[3*pixel+2];
                    if (m_longMeanImage[3*pixel+2] > max) max = m_longMeanImage[3*pixel+2];
                    if (min == 0) { out[pixel] = 0; }
                    else {
                        temp = 255.0*(max-min)/(float)max;
                        temp = CLAMP(temp);
                        out[pixel] = RGBA(temp, temp, temp, 0xFF);
                    }
                    temp = 0x7f + GETR(out[pixel]) - GETR(sat);
                    temp = CLAMP(temp);
                    out[pixel] = RGBA(temp, temp, temp, 0xFF);
                }
                break;
            case Graffiti_SDiffTresh_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    min = GETR(out[pixel]);
                    max = GETR(out[pixel]);
                    if (GETG(out[pixel]) < min) min = GETG(out[pixel]);
                    if (GETG(out[pixel]) > max) max = GETG(out[pixel]);
                    if (GETB(out[pixel]) < min) min = GETB(out[pixel]);
                    if (GETB(out[pixel]) > max) max = GETB(out[pixel]);
                    int sat;
                    if (min == 0) { sat = 0; }
                    else {
                        temp = 255.0*(max-min)/(float)max;
                        temp = CLAMP(temp);
                        sat = RGBA(temp, temp, temp, 0xFF);
                    }
                    if (max < 0x80) {
                        out[pixel] = RGBA(0,0,0,0xFF);
                    } else {
                        min = m_longMeanImage[3*pixel+0];
                        max = m_longMeanImage[3*pixel+0];
                        if (m_longMeanImage[3*pixel+1] < min) min = m_longMeanImage[3*pixel+1];
                        if (m_longMeanImage[3*pixel+1] > max) max = m_longMeanImage[3*pixel+1];
                        if (m_longMeanImage[3*pixel+2] < min) min = m_longMeanImage[3*pixel+2];
                        if (m_longMeanImage[3*pixel+2] > max) max = m_longMeanImage[3*pixel+2];
                        if (min == 0) { out[pixel] = 0; }
                        else {
                            temp = 255.0*(max-min)/(float)max;
                            temp = CLAMP(temp);
                            out[pixel] = RGBA(temp, temp, temp, 0xFF);
                        }
                        temp = 0x7f + GETR(out[pixel]) - GETR(sat);
                        temp = CLAMP(temp);
                        out[pixel] = RGBA(temp, temp, temp, 0xFF);
                    }
                }
                break;
            case Graffiti_SSqrt_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {
                    min = GETR(out[pixel]);
                    max = GETR(out[pixel]);
                    if (GETG(out[pixel]) < min) min = GETG(out[pixel]);
                    if (GETG(out[pixel]) > max) max = GETG(out[pixel]);
                    if (GETB(out[pixel]) < min) min = GETB(out[pixel]);
                    if (GETB(out[pixel]) > max) max = GETB(out[pixel]);
                    if (min == 0) { out[pixel] = 0; }
                    else {
                        temp = 255.0*(max-min)/(float)max/(256.0-max);
                        temp = CLAMP(temp);
                        out[pixel] = RGBA(temp, temp, temp, 0xFF);
                    }
                }
                break;
            case Graffiti_LongAvg_Stat:
                maxDiff = 0;
                temp = 0;
                for (int pixel = 0; pixel < width*height; pixel++) {
                    r = 0x7f + (GETR(out[pixel]) - m_longMeanImage[3*pixel+0])/2;
                    r = CLAMP(r);
                    g = 0x7f + (GETG(out[pixel]) - m_longMeanImage[3*pixel+1])/2;
                    g = CLAMP(g);
                    b = 0x7f + (GETB(out[pixel]) - m_longMeanImage[3*pixel+2])/2;
                    b = CLAMP(b);

                    out[pixel] = RGBA(r,g,b,0xFF);
                }
                break;
            case Graffiti_LongAvg:
                for (int pixel = 0; pixel < width*height; pixel++) {

                    r = 0x7f + (GETR(out[pixel]) - m_longMeanImage[3*pixel+0]);
                    r = CLAMP(r);
                    max = GETR(out[pixel]);
                    maxDiff = r;
                    temp = r;

                    g = 0x7f + (GETG(out[pixel]) - m_longMeanImage[3*pixel+1]);
                    g = CLAMP(g);
                    if (maxDiff < g) maxDiff = g;
                    if (max < GETG(out[pixel])) max = GETG(out[pixel]);
                    temp += g;

                    b = 0x7f + (GETB(out[pixel]) - m_longMeanImage[3*pixel+2]);
                    b = CLAMP(b);
                    if (maxDiff < b) maxDiff = b;
                    if (max < GETB(out[pixel])) max = GETB(out[pixel]);
                    temp += b;

                    if (maxDiff > 0xe0 && temp > 0xe0 + 0xd0 + 0x80) {
                        m_lightMask[pixel] = MAX(m_lightMask[pixel], out[pixel]);

                        m_alphaMap[4*pixel+0] = 2*(GETR(out[pixel])-m_longMeanImage[3*pixel+0]);
                        m_alphaMap[4*pixel+0] = CLAMP(m_alphaMap[4*pixel+0])/255.0;

                        m_alphaMap[4*pixel+1] = 2*(GETG(out[pixel])-m_longMeanImage[3*pixel+1]);
                        m_alphaMap[4*pixel+1] = CLAMP(m_alphaMap[4*pixel+1])/255.0;

                        m_alphaMap[4*pixel+2] = 2*(GETB(out[pixel])-m_longMeanImage[3*pixel+2]);
                        m_alphaMap[4*pixel+2] = CLAMP(m_alphaMap[4*pixel+2])/255.0;

                        m_alphaMap[4*pixel+3] = 1;
                    }

                    if (m_lightMask[pixel] != 0) {
                        r = SCREEN1(GETR(out[pixel]), GETR(m_lightMask[pixel]));
                        g = SCREEN1(GETG(out[pixel]), GETG(m_lightMask[pixel]));
                        b = SCREEN1(GETB(out[pixel]), GETB(m_lightMask[pixel]));
                        r = CLAMP(r);
                        g = CLAMP(g);
                        b = CLAMP(b);
                        out[pixel] = RGBA(r,g,b,0xFF);
                    }
                }
                break;
            case Graffiti_LongAvgAlpha_Stat:
                for (int pixel = 0; pixel < width*height; pixel++) {

                    r = 0x7f + (GETR(out[pixel]) - m_longMeanImage[3*pixel+0]);
                    r = CLAMP(r);
                    max = GETR(out[pixel]);
                    maxDiff = r;
                    temp = r;

                    g = 0x7f + (GETG(out[pixel]) - m_longMeanImage[3*pixel+1]);
                    g = CLAMP(g);
                    if (maxDiff < g) maxDiff = g;
                    if (max < GETG(out[pixel])) max = GETG(out[pixel]);
                    temp += g;

                    b = 0x7f + (GETB(out[pixel]) - m_longMeanImage[3*pixel+2]);
                    b = CLAMP(b);
                    if (maxDiff < b) maxDiff = b;
                    if (max < GETB(out[pixel])) max = GETB(out[pixel]);
                    temp += b;

                    if (maxDiff > 0xe0 && temp > 0xe0 + 0xd0 + 0x80) {
                        m_lightMask[pixel] = MAX(m_lightMask[pixel], out[pixel]);

                        f = 2*(GETR(out[pixel])-m_longMeanImage[3*pixel+0]);
                        f = CLAMP(f)/255.0;
                        if (f > m_alphaMap[4*pixel+0]) m_alphaMap[4*pixel+0] = f;

                        f = 2*(GETG(out[pixel])-m_longMeanImage[3*pixel+1]);
                        f = CLAMP(f)/255.0;
                        if (f > m_alphaMap[4*pixel+1]) m_alphaMap[4*pixel+1] = f;

                        f = 2*(GETB(out[pixel])-m_longMeanImage[3*pixel+2]);
                        f = CLAMP(f)/255.0;
                        if (f > m_alphaMap[4*pixel+2]) m_alphaMap[4*pixel+2] = f;

                        m_alphaMap[4*pixel+3] = 1;
                    }
                    r = 255.0*m_alphaMap[4*pixel+0];
                    g = 255*m_alphaMap[4*pixel+1];
                    b = 255*m_alphaMap[4*pixel+2];
                    out[pixel] = RGBA(r,g,b,0xFF);
                }
                break;
            case Graffiti_LongAvgAlpha:
                for (int pixel = 0; pixel < width*height; pixel++) {

                    r = 0x7f + (GETR(out[pixel]) - m_longMeanImage[3*pixel+0]);
                    r = CLAMP(r);
                    max = GETR(out[pixel]);
                    maxDiff = r;
                    temp = r;

                    g = 0x7f + (GETG(out[pixel]) - m_longMeanImage[3*pixel+1]);
                    g = CLAMP(g);
                    if (maxDiff < g) maxDiff = g;
                    if (max < GETG(out[pixel])) max = GETG(out[pixel]);
                    temp += g;

                    b = 0x7f + (GETB(out[pixel]) - m_longMeanImage[3*pixel+2]);
                    b = CLAMP(b);
                    if (maxDiff < b) maxDiff = b;
                    if (max < GETB(out[pixel])) max = GETB(out[pixel]);
                    temp += b;

                    if (maxDiff > 0xe0 && temp > 0xe0 + 0xd0 + 0x80) {
                        m_lightMask[pixel] = MAX(m_lightMask[pixel], out[pixel]);

                        f = 2*(GETR(out[pixel])-m_longMeanImage[3*pixel+0]);
                        f = CLAMP(f)/255.0;
                        f *= f;
                        if (f > m_alphaMap[4*pixel+0]) m_alphaMap[4*pixel+0] = f;

                        f = 2*(GETG(out[pixel])-m_longMeanImage[3*pixel+1]);
                        f = CLAMP(f)/255.0;
                        f *= f;
                        if (f > m_alphaMap[4*pixel+1]) m_alphaMap[4*pixel+1] = f;

                        f = 2*(GETB(out[pixel])-m_longMeanImage[3*pixel+2]);
                        f = CLAMP(f)/255.0;
                        f *= f;
                        if (f > m_alphaMap[4*pixel+2]) m_alphaMap[4*pixel+2] = f;
                    }
                    if (m_lightMask[pixel] != 0) {
                        r = SCREEN1(GETR(out[pixel]), m_alphaMap[4*pixel+0]*GETR(m_lightMask[pixel]));
                        g = SCREEN1(GETG(out[pixel]), m_alphaMap[4*pixel+1]*GETG(m_lightMask[pixel]));
                        b = SCREEN1(GETB(out[pixel]), m_alphaMap[4*pixel+2]*GETB(m_lightMask[pixel]));
                        r = CLAMP(r);
                        g = CLAMP(g);
                        b = CLAMP(b);
                        out[pixel] = RGBA(r,g,b,0xFF);
                    }
                }
                break;
            case Graffiti_LongAvgAlphaCumC:

                /**
                  Ideas (partially considered) to get a realistic look:
                  * Remember Hue if Saturation > 0.1 (below: Close to white, so Hue might be wrong → remember Saturation as well)
                  * Maximize Saturation for low alpha (opacity)
                  * Make alpha depend on the light source's brightness
                  * If alpha > 1: Simulate overexposure by going towards white
                  * If pixel is bright in another frame: Sum up alpha values (longer exposure)
                    Maybe: Logarithmic scale? → Overexposure becomes harder
                    log(alpha/factor + 1) or sqrt(alpha/factor)
                  */
                for (int pixel = 0; pixel < width*height; pixel++) {

                    /*
                     Light detection
                     */

                    // maxDiff: Maximum difference to the mean image
                    //          {-255,...,255}
                    // max:     Maximum pixel value
                    //          {0,...,255}
                    // temp:    Sum of all differences
                    //          {-3*255,...,3*255}
                    // sum:     Sum of all pixel values
                    //          {0,...,3*255}

                    r = GETR(out[pixel]) - m_longMeanImage[3*pixel+0];
                    maxDiff = r;
                    max = GETR(out[pixel]);
                    temp = r;

                    g = GETG(out[pixel]) - m_longMeanImage[3*pixel+1];
                    if (max < GETG(out[pixel])) {
                        max = GETG(out[pixel]);
                    }
                    if (maxDiff < g) {
                        maxDiff = g;
                    }
                    temp += g;

                    b = GETB(out[pixel]) - m_longMeanImage[3*pixel+2];
                    if (max < GETB(out[pixel])) {
                        max = GETB(out[pixel]);
                    }
                    if (maxDiff < b) {
                        maxDiff = b;
                    }
                    temp += b;

                    sum = GETR(out[pixel]) + GETG(out[pixel]) + GETB(out[pixel]);

                    if (
                            maxDiff > thresholdDifference
                            && temp > thresholdDiffSum
                            && sum > thresholdBrightness
                            // If all requirements are met, then this should be a light source.
                        )
                    {
#ifdef LG_ADV
                        // Just add values as float. Overflows are highly unlikely (3.4E38+ frames ...).
                        fr = CLAMP(r)/255.0;
                        fg = CLAMP(g)/255.0;
                        fb = CLAMP(b)/255.0;

                        f = (fr + fg + fb) / 3 * sensitivity;
                        fr *= f;
                        fg *= f;
                        fb *= f;

#ifdef LG_NO_OVERLAY
//                        std::cout << "fr: " << fr << "; fg: " << fg << "; fb: " << fb << "\n";
                        fr -= m_prevMask[pixel].r;
                        fg -= m_prevMask[pixel].g;
                        fb -= m_prevMask[pixel].b;
                        m_prevMask[pixel].r += fr;
                        m_prevMask[pixel].g += fg;
                        m_prevMask[pixel].b += fb;
//                        std::cout << "fr2: " << fr << "; fg2: " << fg << "; fb2: " << fb << "\n";
                        if (fr < 0) { fr = 0; }
                        if (fg < 0) { fg = 0; }
                        if (fb < 0) { fb = 0; }
#endif

                        m_rgbLightMask[pixel].r += fr;
                        m_rgbLightMask[pixel].g += fg;
                        m_rgbLightMask[pixel].b += fb;

#else
                        // Store the «additional» light delivered by the light source in the light mask.
                        color = RGBA(CLAMP(r), CLAMP(g), CLAMP(b),0xFF);
                        m_lightMask[pixel] = MAX(m_lightMask[pixel], color);

                        // Add the brightness of the light source to the brightness map (alpha map)
                        y = REC709Y(CLAMP(r), CLAMP(g), CLAMP(b)) / 255.0;
                        y = y * sensitivity;
                        m_alphaMap[4*pixel] += y;
#endif
                    } else {
#ifdef LG_NO_OVERLAY
                        m_prevMask[pixel] = rgb0;
#endif
                    }



                    /*
                     Background weight
                     */
                    if (m_pBackgroundWeight > 0) {
                        // Use part of the background mean. This allows to have only lights appearing in the video
                        // if people or other objects walk into the video after the first frame (darker, therefore not in the light mask).
                        out[pixel] = RGBA((int) (m_pBackgroundWeight*m_longMeanImage[3*pixel+0] + (1-m_pBackgroundWeight)*GETR(out[pixel])),
                                          (int) (m_pBackgroundWeight*m_longMeanImage[3*pixel+1] + (1-m_pBackgroundWeight)*GETG(out[pixel])),
                                          (int) (m_pBackgroundWeight*m_longMeanImage[3*pixel+2] + (1-m_pBackgroundWeight)*GETB(out[pixel])),
                                          0xFF);
                    }


                    /*
                     Adding light mask
                     */
#ifdef LG_ADV
                    if (
                            (m_rgbLightMask[pixel].r != 0 || m_rgbLightMask[pixel].g != 0 || m_rgbLightMask[pixel].b != 0)
                            && !m_pStatsBrightness && !m_pStatsDiff && !m_pStatsDiffSum
                       )
                    {

                        fr = m_rgbLightMask[pixel].r;
                        fg = m_rgbLightMask[pixel].g;
                        fb = m_rgbLightMask[pixel].b;

                        if (lowerOverexposure > 0) {
                            // Comparisation of plots with octave:
                            // clf;hold on;plot([0 1],[0 1],'k');plot(range,ones(length(range),1),'k');plot(range,sqrt(range));plot(range,log(1+range),'k');plot(range,log(1+range),'g');plot(range,(log(1+range)/3).^.5,'r');axis equal
                            fr = pow( log(1+fr)/lowerOverexposure, .5 );
                            fg = pow( log(1+fg)/lowerOverexposure, .5 );
                            fb = pow( log(1+fb)/lowerOverexposure, .5 );
                        }


                        // Calculate overflow between different colours:
                        // A very bright red light source will eventually overflow into other channels.
                        sr = 0;
                        sg = 0;
                        sb = 0;
                        if (fr > 1) {
                            sr += fr - 1;
                        }
                        if (fg > 1) {
                            sg += fg - 1;
                        }
                        if (fb > 1) {
                            sb += fb - 1;
                        }
                        fr += (sg + sb)/2;
                        fg += (sr + sb)/2;
                        fb += (sg + sb)/2;
                        if (fr > 1) {
                            fr = 1;
                        }
                        if (fg > 1) {
                            fg = 1;
                        }
                        if (fb > 1) {
                            fb = 1;
                        }

                        // Increase the saturation if the average brightness is below a certain level
                        // Do not use Rec709 Luma since we want to consider all colours to equal parts.
                        fy = (fr + fg + fb) / 3;
                        if (fy < 1 && saturation > 0) {
                            fsat = 1 + saturation*(1-fy);

                            fr = fy + fsat * (fr-fy);
                            fg = fy + fsat * (fg-fy);
                            fb = fy + fsat * (fb-fy);
                        }

                        // Paint the light on top of the image using addition
                        // Since brightness is equidistant in sRGB, this works fine.
                        r = 255*fr + GETR(out[pixel]);
                        g = 255*fg + GETG(out[pixel]);
                        b = 255*fb + GETB(out[pixel]);
                        r = CLAMP(r);
                        g = CLAMP(g);
                        b = CLAMP(b);
                        out[pixel] = RGBA(r,g,b,0xFF);

#ifdef LG_DEBUG
                        deCount++;
                        if (deCount < 10) {
                            std::cout << "r: " << m_rgbLightMask[pixel].r << ", fy: " << fy << ", fr: " << fr << ", sr: " << sr << ", R: " << r << ", inR: " << GETR(in[pixel]) << "\n";
                        }
#endif

                    } else if (m_pTransparentBackground) {
                        // Transparent background
                        out[pixel] &= RGBA(0xFF, 0xFF, 0xFF, 0);
                    }
#else
                    if (
                            m_lightMask[pixel] != 0  && m_alphaMap[4*pixel + 0] != 0
                            && !m_pStatsBrightness && !m_pStatsDiff && !m_pStatsDiffSum
                        )
                    {

                        f = sqrt(m_alphaMap[4*pixel]);

                        r = f * GETR(m_lightMask[pixel]);
                        g = f * GETG(m_lightMask[pixel]);
                        b = f * GETB(m_lightMask[pixel]);

                        if (f > 1) {
                            // Simulate overexposure
                            sum = 0;
                            if (r > 255) {
                                sum += r-255;
                            }
                            if (g > 255) {
                                sum += g-255;
                            }
                            if (b > 255) {
                                sum += g-255;
                            }

                            if (sum > 0) {
                                sum = sum/10.0;
                                r += sum;
                                g += sum;
                                b += sum;
                            }
                        } else if (f < 1) {
                            // Lower exposure: Stronger colors
                            y = REC709Y(r,g,b);
                            float sat = 2.0;

                            r = y + sat * (r-y);
                            g = y + sat * (g-y);
                            b = y + sat * (b-y);
                        }


                        // Add the light map as additional light to the image
                        r += GETR(out[pixel]);
                        g += GETG(out[pixel]);
                        b += GETB(out[pixel]);
                        r = CLAMP(r);
                        g = CLAMP(g);
                        b = CLAMP(b);
                        out[pixel] = RGBA(r,g,b,0xFF);
                    } else if (m_pTransparentBackground) {
                        // Transparent background
                        out[pixel] &= RGBA(0xFF, 0xFF, 0xFF, 0);
                    }
#endif


                    /*
                     In-video statistics for easier parameter adjustment (thresholds)
                     */
                    if (m_pStatsBrightness) {
                        // Show the image's brightness and highlight the threshold set by the user

                        // Limit maximum brightness to 80% for still being able to distinguish
                        // between «bright spot» (light grey) and «over the threshold» (blue)
                        r = .8*sum/3;
                        g = .8*sum/3;
                        b = .8*sum/3;
                        if (sum > thresholdBrightness) {
                            b = 255;
                        }
                        out[pixel] = RGBA(r,g,b,0xFF);
                    }

                    if (m_pStatsDiff) {
                        // As above, but for the brightness difference relative to the background.
                        r = .8*CLAMP(maxDiff);
                        g = r;
                        if (!m_pStatsBrightness) {
                            b = r;
                        }

                        if (maxDiff > thresholdDifference) {
                            g = 255;
                        }
                        out[pixel] = RGBA(r,g,b,0xFF);
                    }

                    if (m_pStatsDiffSum) {
                        // As above, for the sum of the differences in each color channel.
                        r = .8*CLAMP(temp/3.0);
                        if (!m_pStatsDiff) {
                            g = r;
                        }
                        if (!m_pStatsBrightness) {
                            b = r;
                        }
                        if (temp > thresholdDiffSum) {
                            r = 255;
                        }
                        out[pixel] = RGBA(r,g,b,0xFF);
                    }
                }
                break;
            default:
                break;
        }
    }

private:
    std::vector<uint32_t> m_lightMask;
    std::vector<float> m_longMeanImage;
    std::vector<float> m_alphaMap;
    bool m_meanInitialized;
    GraffitiMode m_mode;
    DimMode m_dimMode;

#ifdef LG_ADV
    std::vector<RGBFloat> m_rgbLightMask;
#endif
#ifdef LG_NO_OVERLAY
    std::vector<RGBFloat> m_prevMask;
#endif

    f0r_param_double m_pLongAlpha;
    f0r_param_double m_pSensitivity;
    f0r_param_double m_pBackgroundWeight;
    f0r_param_double m_pThresholdBrightness;
    f0r_param_double m_pThresholdDifference;
    f0r_param_double m_pThresholdDiffSum;
    f0r_param_double m_pDim;
    f0r_param_double m_pSaturation;
    f0r_param_double m_pLowerOverexposure;
    f0r_param_bool m_pStatsBrightness;
    f0r_param_bool m_pStatsDiff;
    f0r_param_bool m_pStatsDiffSum;
    f0r_param_bool m_pTransparentBackground;
    f0r_param_bool m_pBlackReference;
    f0r_param_bool m_pNonlinearDim;
    f0r_param_bool m_pReset;

};



frei0r::construct<LightGraffiti> plugin("Light Graffiti",
                "Creates light graffitis from a video by keeping the brightest spots.",
                "Simon A. Eugster (Granjow)",
                0,2,
                F0R_COLOR_MODEL_RGBA8888);