tTh/FloatImg
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normalize in fimg2text

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This commit is contained in:
le vieux 2021-02-27 12:52:09 +01:00
parent 268a73ceb5
commit 583151302a
1 changed files with 44 additions and 7 deletions
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45
tools/fimg2text.c
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@ -1,5 +1,6 @@
/*
* converting a floatimg to a machinable text file
* an ugly software from tTh - february 2021
*/
#include <stdio.h>
@ -46,7 +47,37 @@ for (y=0; y<src->height; y+=steps) {
return 0;
}
/* ------------------------------------------------------------------------- */
int convertir_fimg_en_machinable(char *srcname, char *dstname, int steps)
static int normalize(FloatImg *pimg, float vmax)
{
float mmv[6], maxi, coef;
int foo, sz, idx;
// #if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %g )\n", __func__, pimg, vmax);
// #endif
foo = fimg_get_minmax_rgb(pimg, mmv);
fimg_print_minmax(mmv, "norm it ?");
maxi = mmv[1];
if (mmv[3] > maxi) maxi = mmv[3];
if (mmv[5] > maxi) maxi = mmv[5];
fprintf(stderr, "maximum = %f\n", maxi);
coef = vmax / maxi;
fprintf(stderr, "coef = %f\n", coef);
sz = pimg->width * pimg->height;
for (idx=0; idx<sz; idx++) {
pimg->R[idx] *= coef;
pimg->G[idx] *= coef;
pimg->B[idx] *= coef;
}
return 0;
}
/* ------------------------------------------------------------------------- */
int convertir_fimg_en_machinable(char *srcname, char *dstname,
int steps, float norm)
{
int foo, infos[3];
FloatImg fimg;
@ -78,6 +109,10 @@ if (foo) {
if (verbosity) {
fimg_describe(&fimg, srcname);
}
if (norm > 0.0) {
fprintf(stderr, "normalize %p\n", &fimg);
foo = normalize(&fimg, norm);
}
foo = export_as_machinable(&fimg, dstname, steps, 0);
@ -88,12 +123,12 @@ return 0;
/* ------------------------------------------------------------------------- */
void help(int k)
{
puts("usage:\n\tfimg2text [options] foo.fimg > bar.csv");
puts("options:");
puts("\t-v\tincrease verbosity");
puts("\t-n 3.14\tnormalize picture");
puts("\t-s N\nsteps on x & y");
if (verbosity) fimg_print_version(1);
exit(0);
}
/* ------------------------------------------------------------------------- */
@ -102,12 +137,14 @@ int main(int argc, char *argv[])
{
int foo, opt;
int steps = 16;
float norm_val = 222.0; /* < 0 : don't normalize */
while ((opt = getopt(argc, argv, "hs:v")) != -1) {
switch(opt) {
case 'v': verbosity++; break;
case 'h': help(1); exit(1);
case 's': steps = atoi(optarg); break;
case 'n': norm_val = atof(optarg); break;
}
}
@ -116,7 +153,7 @@ if (1 != argc-optind) {
exit(1);
}
foo = convertir_fimg_en_machinable(argv[optind], "-", steps);
foo = convertir_fimg_en_machinable(argv[optind], "-", steps, norm_val);
if (foo)
fprintf(stderr, "%s : got a %d from convertor\n", argv[0], foo);