90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
/*
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* FLOATIMG
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* --------
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* F M O R P H O
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*
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* nouveau 30 septembre 2022 / integration 28 octobre 2022
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/time.h>
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#include "../floatimg.h"
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/* --------------------------------------------------------------------- !*/
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static struct
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{
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int x, y;
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} deltas[] =
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{ { -1, -1, },
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{ 0, -1, },
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{ 1, -1, },
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{ -1, 0, },
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{ 0, 0, },
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{ 1, 0, },
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{ -1, 1, },
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{ 0, 1, },
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{ 1, 1 }
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};
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typedef struct
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{
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int x, y; // not used
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float r, g, b;
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float fgris;
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int rang;
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} fpixel;
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static fpixel pixels[9];
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/* --------------------------------------------------------------------- !*/
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static int comparaison_fgris(const void *A, const void *B)
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{
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return ((fpixel *)A)->fgris > ((fpixel *)B)->fgris;
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}
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/* --------------------------------------------------------------------- !*/
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/*
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* this is a klugy approch, sorry.
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*/
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int fimg_filtre_morpho_0(FloatImg *sfimg, FloatImg *dfimg, int index)
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{
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int xs, ys, loop9;
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int xp, yp;
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float rgb[3];
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__, sfimg, dfimg, index);
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#endif
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if ( (index<0) || (index>8)) {
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fprintf(stderr, " %s: bad index %d\n", __func__, index);
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#if MUST_ABORT
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fflush(stderr); abort();
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#endif
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return -1;
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}
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fimg_clear(dfimg);
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for (ys=1; ys<sfimg->height-1; ys++) {
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for (xs=1; xs<sfimg->width-1; xs++) {
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for (loop9=0; loop9<9; loop9++) {
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xp = xs + deltas[loop9].x;
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yp = ys + deltas[loop9].y;
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fimg_get_rgb(sfimg, xp, yp, rgb);
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pixels[loop9].fgris = rgb[0] + rgb[1] + rgb[2];
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pixels[loop9].rang = loop9;
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}
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qsort(&pixels, 9, sizeof(fpixel), comparaison_fgris);
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rgb[0] = rgb[1] = rgb[2] = pixels[index].fgris;
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fimg_put_rgb(dfimg, xs, ys, rgb);
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}
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}
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return 0;
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}
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/* --------------------------------------------------------------------- !*/
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