tTh/FloatImg
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another scaling computation...

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tth 2019-09-17 11:22:00 +02:00
parent f3d2dd6034
commit b0fe0091d4
2 changed files with 17 additions and 9 deletions
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2
floatimg.h
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@ -58,7 +58,7 @@ int fimg_sub(FloatImg *a, FloatImg *b, FloatImg *d);
int fimg_mul(FloatImg *a, FloatImg *b, FloatImg *d); int fimg_mul(FloatImg *a, FloatImg *b, FloatImg *d);
/* PNM files module */ /* PNM files module */
int fimg_save_as_pnm(FloatImg *head, char *fname, int notused); int fimg_save_as_pnm(FloatImg *head, char *fname, int flags);
int fimg_load_from_pnm(char *fname, FloatImg *head, int notused); int fimg_load_from_pnm(char *fname, FloatImg *head, int notused);
double fimg_timer_set(int whot); double fimg_timer_set(int whot);

24
lib/fimg-pnm.c
View File

@ -131,17 +131,17 @@ fputs("\n", fp);
} }
/* ---------------------------------------------------------------- */ /* ---------------------------------------------------------------- */
/* /*
* * bit 0 of flags : use fvalue/count
*/ */
int fimg_save_as_pnm(FloatImg *head, char *fname, int notused) int fimg_save_as_pnm(FloatImg *head, char *fname, int flags)
{ {
FILE *fp; FILE *fp;
float maximum, fk; float maximum, fk;
char *code; char *code;
#if DEBUG_LEVEL #if DEBUG_LEVEL
fprintf(stderr, ">>> %-25s ( %p '%s' %d )\n", __func__, head, fprintf(stderr, ">>> %-25s ( %p '%s' 0x%04x )\n", __func__, head,
fname, notused); fname, flags);
#endif #endif
if ( head->type != FIMG_TYPE_RGB && head->type != FIMG_TYPE_GRAY) { if ( head->type != FIMG_TYPE_RGB && head->type != FIMG_TYPE_GRAY) {
@ -163,10 +163,18 @@ switch(head->type) {
fprintf(fp, "%s\n%d %d\n", code, head->width, head->height); fprintf(fp, "%s\n%d %d\n", code, head->width, head->height);
maximum = fimg_get_maxvalue(head); if ( flags & 1 ) {
fprintf(fp, "# maxval %15f\n", maximum); fprintf(stderr, "%s using fval/count %f %d -> %f\n", __func__,
fk = maximum / 65535.0; head->fval, head->count,
fprintf(fp, "# divisor %15f\n", fk); head->fval * head->count);
fk = (head->fval * head->count) / 65535.0;
}
else {
maximum = fimg_get_maxvalue(head);
fk = maximum / 65535.0;
fprintf(fp, "# maxval %15f\n# divisor %15f\n", maximum, fk);
}
fprintf(fp, "65535\n"); fprintf(fp, "65535\n");
fflush(fp); fflush(fp);