Bibliothèque de traitements d'images en virgule flottante.
http://la.buvette.org/photos/cumul/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
182 lines
4.0 KiB
182 lines
4.0 KiB
/* |
|
* programme de test pour |
|
* les fonctions de base. |
|
*/ |
|
|
|
#include <stdio.h> |
|
#include <stdlib.h> |
|
#include <unistd.h> |
|
#include <string.h> |
|
#include <math.h> |
|
|
|
#include "../floatimg.h" |
|
|
|
int verbosity; |
|
|
|
/* ---------------------------------------------------------------- */ |
|
int essai_normalize(void) |
|
{ |
|
FloatImg A; |
|
float val; |
|
int foo; |
|
|
|
foo = fimg_create(&A, 512, 512, FIMG_TYPE_RGB); |
|
if (foo) { |
|
fprintf(stderr, "%s err create A %d\n", __func__, foo); |
|
return foo; |
|
} |
|
|
|
fimg_drand48(&A, 255.0); |
|
val = fimg_get_maxvalue(&A); |
|
fprintf(stderr, "BEFORE max pixel %f\n", val); |
|
|
|
A.fval = 255.0; A.count = 1; |
|
|
|
foo = fimg_normalize(&A, 1.0, 0); |
|
if (foo) { |
|
fprintf(stderr, "%s err normalize A %d\n", __func__, foo); |
|
return foo; |
|
} |
|
|
|
val = fimg_get_maxvalue(&A); |
|
fprintf(stderr, "AFTER max pixel %f\n", val); |
|
|
|
return 0; |
|
} |
|
/* ---------------------------------------------------------------- */ |
|
|
|
int essai_2gray(FloatImg *picz, char *outname) |
|
{ |
|
int foo; |
|
FloatImg gray; |
|
|
|
fprintf(stderr, ">>> %s ( %p '%s' )\n", __func__, picz, outname); |
|
|
|
foo = fimg_create(&gray, picz->width, picz->height, FIMG_TYPE_GRAY); |
|
if (foo) { |
|
fprintf(stderr, "%s : err %d on fimg create\n", __func__, foo); |
|
exit(1); |
|
} |
|
foo = fimg_mk_gray_from(picz, &gray, 0); |
|
if (foo) { |
|
fprintf(stderr, "%s : err %d on fimg mk_gray_from\n", __func__, foo); |
|
exit(1); |
|
} |
|
|
|
foo = fimg_save_as_pnm(&gray, outname, 0); |
|
if (foo) { |
|
fprintf(stderr, "%s : err %d on save_as_pnm\n", __func__, foo); |
|
exit(1); |
|
} |
|
|
|
fimg_destroy(&gray); |
|
|
|
return 0; |
|
} |
|
/* ---------------------------------------------------------------- */ |
|
|
|
int essai_clone_et_copy(int unused) |
|
{ |
|
FloatImg A, B, C; |
|
int foo; |
|
|
|
foo = fimg_create(&A, 512, 512, FIMG_TYPE_RGB); |
|
if (foo) { |
|
fprintf(stderr, "%s err create A %d\n", __func__, foo); |
|
return foo; |
|
} |
|
foo = fimg_draw_something(&A); |
|
if (foo) { |
|
fprintf(stderr, "%s err drawing A %d\n", __func__, foo); |
|
return foo; |
|
} |
|
foo = fimg_save_as_pnm(&A, "A.pnm", 0); |
|
|
|
if (foo) { |
|
fprintf(stderr, "%s : err %d on save_as_pnm\n", __func__, foo); |
|
exit(1); |
|
} |
|
|
|
foo = fimg_clone(&A, &B, 1); |
|
if (foo) { |
|
fprintf(stderr, "%s err clone B %d\n", __func__, foo); |
|
return foo; |
|
} |
|
|
|
foo = fimg_create(&C, 512, 512, FIMG_TYPE_RGB); |
|
if (foo) { |
|
fprintf(stderr, "%s err create A %d\n", __func__, foo); |
|
return foo; |
|
} |
|
foo = fimg_copy_data(&A, &C); |
|
if (foo) { |
|
fprintf(stderr, "%s err copydata %d\n", __func__, foo); |
|
return foo; |
|
} |
|
foo = fimg_save_as_pnm(&C, "C.pnm", 0); |
|
|
|
|
|
return 0; |
|
} |
|
/* ---------------------------------------------------------------- */ |
|
|
|
int essai_contraste(char *fname) |
|
{ |
|
int foo; |
|
FloatImg dessin, copy; |
|
double maxi; |
|
|
|
foo = fimg_create_from_dump(fname, &dessin); |
|
foo = fimg_clone(&dessin, ©, 0); |
|
|
|
maxi = (double)fimg_get_maxvalue(&dessin); |
|
fprintf(stderr, "image source valeur maxi = %f\n", maxi); |
|
|
|
fimg_power_2(&dessin, ©, maxi); |
|
maxi = (double)fimg_get_maxvalue(©); |
|
fprintf(stderr, "apres power_2 valeur maxi = %f\n", maxi); |
|
fimg_dump_to_file(©, "power2.fimg", 0); |
|
|
|
fimg_square_root(&dessin, ©, maxi); |
|
maxi = (double)fimg_get_maxvalue(©); |
|
fprintf(stderr, "apres square_root valeur maxi = %f\n", maxi); |
|
fimg_dump_to_file(©, "squareroot.fimg", 0); |
|
|
|
fimg_cos_01(&dessin, ©, maxi); |
|
maxi = (double)fimg_get_maxvalue(©); |
|
fprintf(stderr, "apres cos 01 valeur maxi = %f\n", maxi); |
|
fimg_dump_to_file(©, "cos_01.fimg", 0); |
|
|
|
fimg_cos_010(&dessin, ©, maxi); |
|
maxi = (double)fimg_get_maxvalue(©); |
|
fprintf(stderr, "apres cos 010 valeur maxi = %f\n", maxi); |
|
fimg_dump_to_file(©, "cos_010.fimg", 0); |
|
|
|
fimg_destroy(&dessin); |
|
|
|
return -1; |
|
} |
|
/* ---------------------------------------------------------------- */ |
|
#define W 320 |
|
#define H 240 |
|
int main(int argc, char *argv[]) |
|
{ |
|
int foo, opt; |
|
// char outname[100]; |
|
int gray = 0; |
|
|
|
while ((opt = getopt(argc, argv, "gn:v")) != -1) { |
|
switch(opt) { |
|
case 'g': gray++; break; |
|
case 'n': foo=atoi(optarg); break; |
|
case 'v': verbosity++; break; |
|
} |
|
} |
|
|
|
if (verbosity) fimg_print_version(0); |
|
|
|
foo = essai_normalize(); |
|
fprintf(stderr, "retour essai normalize -> %d\n", foo); |
|
|
|
return 0; |
|
}
|
|
|