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