aboutsummaryrefslogtreecommitdiffstats
path: root/alg_gamma.h
blob: b9a1f109e219962e930e078b9081a5e24b359af1 (plain)
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
/**
* @file			alg_gamma.h
* @brief		gamma correction algorithm definition
* @author		Patrick Roth - roth@stettbacher.ch
* @copyright	Stettbacher Signal Processing AG
* 
* @remarks
*
* <PRE>
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* </PRE>
*
*/


/*
 * This code inplements gamma correction algorithm and is pixel size independent. Including this code at the
 * C-Source file will define the pixel-bit-depth (see gamma_corr.c).
 */
// static void gamma_corr8(uint8_t *img_rgb, const uint8_t *img_in, const int height, const int width, const int *gamma_table, const int is_color)
// static void gamma_corr16(uint8_t *img_rgb, const uint8_t *img_in, const int height, const int width, const int *gamma_table, const int is_color)
{
	int index, num_pixel;
	
	if(is_color) {
		num_pixel = height*width*3;
	}
	else {
		num_pixel = height*width;
	}
	
	for(index = 0; index < num_pixel; index++) {
		img_rgb[index] = gamma_table[img_in[index]];
	}
}