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FloatImg
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need more work

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tth 2021-05-10 00:05:52 +02:00
parent a27a165404
commit 198bd874f1
1 changed files with 35 additions and 5 deletions
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40
Fonderie/metriques.c
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@ -10,6 +10,7 @@
extern int verbosity; extern int verbosity;
/* -------------------------------------------------------------- */ /* -------------------------------------------------------------- */
/* usage --> sfx.c:trinitron */
int stat_zone(FloatImg *pimg, int geom[4], float v3[3]) int stat_zone(FloatImg *pimg, int geom[4], float v3[3])
{ {
int x, y, xe, ye; int x, y, xe, ye;
@ -43,9 +44,12 @@ return 0;
} }
/* -------------------------------------------------------------- */ /* -------------------------------------------------------------- */
/* /*
* premier essai... * premier essai : moyenne de toutes les composantes
* de tous les pixels.
*
* Question: pourquoi pas le retour en double precision ?
*/ */
int get_float_metric_a(FloatImg *pimg, float *where) int get_float_metric_avg(FloatImg *pimg, float *where)
{ {
float means[4]; /* four values : R G B A */ float means[4]; /* four values : R G B A */
int foo; int foo;
@ -63,7 +67,8 @@ if (foo) {
return 0; return 0;
} }
/* -------------------------------------------------------------- */ /* -------------------------------------------------------------- */
int get_float_metric_b(FloatImg *pimg, float *where) /* echantillonage des pixels rouges */
int get_float_metric_iRed(FloatImg *pimg, float *where)
{ {
int idx, size, nbre; int idx, size, nbre;
double adder; double adder;
@ -79,6 +84,28 @@ for (idx=20; idx < size; idx+=42) {
return 0; return 0;
} }
/* -------------------------------------------------------------- */ /* -------------------------------------------------------------- */
int get_float_metric_LR(FloatImg *pimg, float *where)
{
int coords[4], foo;
float valL[3], valR[3];
coords[0] = 0; // X
coords[1] = 0; // Y
coords[2] = pimg->width / 2; // W
coords[3] = pimg->height; // H
foo = stat_zone(pimg, coords, valL);
coords[1] = pimg->width / 2;
foo = stat_zone(pimg, coords, valR);
*where = valL[1] - valR[1];
return 0;
}
/* -------------------------------------------------------------- */
/*
* et voici le grand dispactheur
*/
int get_float_metric_from_file(char *fname, float *where, int mode) int get_float_metric_from_file(char *fname, float *where, int mode)
{ {
FloatImg image; FloatImg image;
@ -97,10 +124,13 @@ if (foo) {
fval = -1.0; /* sensible default value */ fval = -1.0; /* sensible default value */
switch (mode) { switch (mode) {
case 0: case 1: case 0: case 1:
foo = get_float_metric_a(&image, &fval); foo = get_float_metric_avg(&image, &fval);
break; break;
case 2: case 2:
foo = get_float_metric_b(&image, &fval); foo = get_float_metric_iRed(&image, &fval);
break;
case 3:
foo = get_float_metric_LR(&image, &fval);
break; break;
default: default:
fprintf(stderr, "%s: method %d invalid\n", fprintf(stderr, "%s: method %d invalid\n",