1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* modifyhuesat.c
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
main(int argc,
char **argv)
{
char *filein, *fileout;
l_int32 i, j, w, d, nhue, nsat, tilewidth;
l_float32 dhue, dsat, delhue, delsat;
PIX *pix, *pixs, *pixt1, *pixt2, *pixd;
PIXA *pixa;
static char mainName[] = "modifyhuesat";
if (argc != 7) {
ERROR_INT(" Syntax: modifyhuesat filein nhue dhue nsat dsat fileout",
mainName, 1);
return 1;
}
filein = argv[1];
nhue = atoi(argv[2]);
dhue = atof(argv[3]);
nsat = atoi(argv[4]);
dsat = atof(argv[5]);
fileout = argv[6];
if (nhue % 2 == 0) {
nhue++;
fprintf(stderr, "nhue must be odd; raised to %d\n", nhue);
}
if (nsat % 2 == 0) {
nsat++;
fprintf(stderr, "nsat must be odd; raised to %d\n", nsat);
}
if ((pix = pixRead(filein)) == NULL)
return ERROR_INT("pix not read", mainName, 1);
pixs = pixScale(pix, 0.25, 0.25);
pixGetDimensions(pixs, &w, NULL, &d);
pixa = pixaCreate(nhue * nsat);
for (i = 0; i < nsat; i++) {
delsat = (i - nsat / 2) * dsat;
pixt1 = pixModifySaturation(NULL, pixs, delsat);
for (j = 0; j < nhue; j++) {
delhue = (j - nhue / 2) * dhue;
pixt2 = pixModifyHue(NULL, pixt1, delhue);
pixaAddPix(pixa, pixt2, L_INSERT);
}
pixDestroy(&pixt1);
}
tilewidth = L_MIN(w, 1500 / nsat);
pixd = pixaDisplayTiledAndScaled(pixa, d, tilewidth, nsat, 0, 25, 3);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pix);
pixDestroy(&pixs);
pixDestroy(&pixd);
pixaDestroy(&pixa);
return 0;
}
|
