tTh/FloatImg
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compare: tTh:b0fe0091d496a162e9053af8a11fc125e04c3a5c
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3 Commits
c3bc39750d ... b0fe0091d4

Author SHA1 Message Date
tth
b0fe0091d4 another scaling computation... 2019-09-17 11:22:00 +02:00
tth
f3d2dd6034 trying a new scaling method for saving in pnm 2019-09-17 11:21:20 +02:00
tth
d4dbecc45d always triple check your patchen 2019-09-16 16:27:01 +02:00
3 changed files with 20 additions and 10 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);
/* 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);
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;
float maximum, fk;
char *code;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %-25s ( %p '%s' %d )\n", __func__, head,
fname, notused);
fprintf(stderr, ">>> %-25s ( %p '%s' 0x%04x )\n", __func__, head,
fname, flags);
#endif
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);
maximum = fimg_get_maxvalue(head);
fprintf(fp, "# maxval %15f\n", maximum);
fk = maximum / 65535.0;
fprintf(fp, "# divisor %15f\n", fk);
if ( flags & 1 ) {
fprintf(stderr, "%s using fval/count %f %d -> %f\n", __func__,
head->fval, head->count,
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");
fflush(fp);

4
v4l2/grabvidseq.c
View File

@ -129,6 +129,7 @@ while ((opt = getopt(argc, argv, "d:ghn:o:O:p:s:uv")) != -1) {
optarg);
exit(1);
}
period *= 1e6;
break;
case 's': parse_WxH(optarg, &width, &height);
break;
@ -141,6 +142,7 @@ if (verbosity) {
fprintf(stderr, "running %s pid=%d\n", argv[0], getpid());
fprintf(stderr, "period is %.3f milliseconds\n", period/1e3);
fprintf(stderr, "framesize is %dx%d\n", width, height);
fprintf(stderr, "upscaling is %s\n", upscaling ? "on" : "off");
}
fd = v4l2_open(dev_name, O_RDWR | O_NONBLOCK, 0);
@ -311,7 +313,7 @@ if (to_gray) {
// save cumul to file
if (verbosity) fprintf(stderr, "saving to '%s'\n", outfile);
foo = fimg_save_as_pnm(&cumul, outfile, 0);
foo = fimg_save_as_pnm(&cumul, outfile, 1);
// free buffers
fimg_destroy(&cumul);