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a new "rescale" option in cumulfimgs

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tTh 2022-09-17 19:18:45 +02:00
parent e6379f6338
commit feafd2799d
3 changed files with 51 additions and 14 deletions
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5
floatimg.h
View File

@ -20,7 +20,7 @@
* https://git.tetalab.org/tTh/FloatImg
*/
#define FIMG_VERSION (198)
#define FIMG_VERSION (201)
#define RELEASE_NAME ("noname")
/* XXX add a test for stdint.h / uint32_t XXX */
@ -233,7 +233,7 @@ int fimg_qsort_rgb_b(FloatImg *psrc, FloatImg *pdst, int notused);
/* module funcs/equalize.c */
int fimg_equalize_compute(FloatImg *src, void *vptr, float vmax);
int fimg_equalize(FloatImg *src, float vmax);
int fimg_equalize(FloatImg *src, double vmax);
int fimg_mk_gray_from(FloatImg *src, FloatImg*dst, int k);
int fimg_desaturate(FloatImg *src, FloatImg *dst, int notused);
@ -285,6 +285,7 @@ int fimg_meanvalues(FloatImg *head, float means[4]);
int fimg_to_gray(FloatImg *head);
int fimg_add_cste(FloatImg *fi, float value);
int fimg_mul_cste(FloatImg *fi, float value);
int fimg_div_cste(FloatImg *fi, float value);
int fimg_ajust_from_grab(FloatImg *fi, double maxima, int notused);
int fimg_absolute(FloatImg *fimg);
void fimg_drand48(FloatImg *fi, float kmul);

27
lib/fimg-math.c
View File

@ -296,6 +296,33 @@ if (fi->type == FIMG_TYPE_GRAY) {
return 0;
}
/* ---------------------------------------------------------------- */
/* nouveau 17 septembre 2022 */
int fimg_div_cste(FloatImg *fi, float value)
{
int nbre, idx;
if ( (fi->type != FIMG_TYPE_RGB) && (fi->type != FIMG_TYPE_GRAY) ) {
fprintf(stderr, "%s : type %d invalide\n",
__func__, fi->type);
return -44;
}
nbre = fi->width * fi->height;
if (fi->type == FIMG_TYPE_RGB) {
for (idx=0; idx<nbre; idx++) {
fi->R[idx] /= value;
fi->G[idx] /= value;
fi->B[idx] /= value;
}
}
if (fi->type == FIMG_TYPE_GRAY) {
for (idx=0; idx<nbre; idx++) {
fi->R[idx] /= value;
}
}
return 0;
}
/* ---------------------------------------------------------------- */
/*
* oh, please explain the usecase of this function !
*/

33
tools/cumulfimgs.c
View File

@ -40,9 +40,10 @@ void help(int v)
puts("");
puts("$ cumulfimgs a.fimg b.fimg c-fimg ...");
puts("cumulator options :");
puts("\t-v\tincrease verbosity");
puts("\t-o\tname of output file");
puts("\t-g\tconvert to gray level");
puts("\t-o\tname of output file");
puts("\t-s\trescale end image");
puts("\t-v\tincrease verbosity");
puts("");
if (verbosity) { puts("Xperiment"); fimg_print_version(v); }
exit(0);
@ -52,22 +53,25 @@ int main(int argc, char *argv[])
{
int foo, idx;
int opt;
int compte = 0;
int to_gray = 0;
int experiment = 0;
char *output_file = "out.fimg";
int compte = 0;
int to_gray = 0;
int experiment = 0;
int rescale = 0;
int src_loaded = 0;
char *output_file = "out.fimg";
FloatImg accu, temp;
int src_loaded = 0;
float vals[6];
g_width = g_height = 0;
while ((opt = getopt(argc, argv, "gho:vx")) != -1) {
while ((opt = getopt(argc, argv, "gho:svx")) != -1) {
switch(opt) {
case 'g': to_gray = 1; break;
case 'h': help(1); break;
case 'o': output_file = optarg; break;
case 's': rescale = 1; break;
case 'v': verbosity++; break;
case 'x': experiment++; break;
}
@ -84,7 +88,7 @@ for (idx=optind; idx<argc; idx++) {
#endif
foo = testfile(argv[idx]);
if (foo) {
fprintf(stderr, "testfile %s -> %d\n", argv[idx],foo);
fprintf(stderr, "testfile %s -> %d\n", argv[idx], foo);
exit(1);
}
@ -104,11 +108,16 @@ for (idx=optind; idx<argc; idx++) {
compte++;
}
/* XXX */
if (rescale) {
fprintf(stderr, "cumulfimg: count = %d\n", compte);
fimg_div_cste(&accu, (float)compte);
}
/* XXX */
if (experiment) {
}
/* XXX */
}
/* XXX */
if (to_gray) {