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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
#include <wand/MagickWand.h>
#include <gsl/gsl_histogram.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define round(x)((x)>=0?(int)((x)+0.5):(int)((x)-0.5))
#define ThrowWandException(wand) { char *description; ExceptionType severity; description=MagickGetException(wand,&severity); (void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); description=(char *) MagickRelinquishMemory(description); exit(-1); }
int main(int argc, char **argv ) {
MagickWand *magick_wand;
MagickWand *first;
double green = 0;
double red = 0;
double blue = 0;
int image = 0;
int i = 0;
int j = 0;
int k = 0;
int l = 0;
int height = 0;
int width = 0;
int nImages = 0;
MagickWandGenesis();
first = NewMagickWand();
// Check the height and width of the first image
MagickReadImage(first, "Background.png");
height = MagickGetImageHeight(first);
width = MagickGetImageWidth(first);
printf("%d %d \n", height, width);
// Count how many images there are in the input file
char fname[256];
FILE *count = fopen( argv[1], "r");
if(count != NULL) {
while((fgets(fname, sizeof(fname), count)) != NULL) {
nImages++;
}
fclose(count);
}
printf("%d \n", nImages);
//this will store the number of pixels in each row
unsigned long number_wands;
char filename[256];
char *temp;
FILE *file = fopen ( argv[1], "r" );
// initialize this crazy array.
uint8_t ****array;
int dim1 = nImages;
int dim2 = height;
int dim3 = width;
int dim4 = 3;
array = calloc(dim1, sizeof(array[0]));
for(i = 0; i < dim1; i++)
{
array[i] = calloc(dim2, sizeof(array[0][0]));
for(j = 0; j < dim2; j++)
{
array[i][j] = calloc(dim3, sizeof(array[0][0][0]));
for(k = 0; k < dim3; k++)
{
array[i][j][k] = calloc(dim4, sizeof(array[0][0][0][0]));
}
}
}
if ( file != NULL ) {
while ((fgets(filename, sizeof(filename), file)) != NULL ) {
temp = strchr(filename, '\n');
if (temp != NULL) *temp = '\0';
magick_wand = NewMagickWand();
MagickReadImage(magick_wand, filename);
PixelIterator* iterator = NewPixelIterator(magick_wand);
PixelWand **pixels = PixelGetNextIteratorRow(iterator,&number_wands);
printf("Image number:%d Filename: %s \n", image, filename);
for (i=0; pixels != (PixelWand **) NULL; i++) {
for (j=0; j<number_wands; j++) {
green = PixelGetGreen(*pixels);
blue = PixelGetBlue(*pixels);
red = PixelGetRed(*pixels);
// printf("write: %d %d %d \n", round(red*255), round(green*255), round(blue*255));
array[image][i][j][0] = round(red*255);
array[image][i][j][1] = round(green*255);
array[image][i][j][2] = round(blue*255);
}
PixelSyncIterator(iterator);
pixels=PixelGetNextIteratorRow(iterator,&number_wands);
}
PixelSyncIterator(iterator);
iterator=DestroyPixelIterator(iterator);
ClearMagickWand(magick_wand);
image++;
}
fclose ( file );
}
else {
exit(0);
}
// calculate histograms
//
for (j = 0; j < height; j++) {
for (k = 0; k < width; k++) {
gsl_histogram * r = gsl_histogram_alloc (nImages);
gsl_histogram * g = gsl_histogram_alloc (nImages);
gsl_histogram * b = gsl_histogram_alloc (nImages);
gsl_histogram_set_ranges_uniform (r, 0, 255);
gsl_histogram_set_ranges_uniform (g, 0, 255);
gsl_histogram_set_ranges_uniform (b, 0, 255);
for (i = 0; i < nImages; i++) {
gsl_histogram_increment (r, array[i][j][k][0]);
gsl_histogram_increment (g, array[i][j][k][1]);
gsl_histogram_increment (b, array[i][j][k][2]);
//printf("height %d width %d image %d %hhu %hhu %hhu \n", j, k, i, array[i][j][k][0], array[i][j][k][1], array[i][j][k][2]);
}
size_t red = gsl_histogram_max_val(r);
size_t green = gsl_histogram_max_val(r);
size_t blue = gsl_histogram_max_val(r);
int red_val = array[red - 1 ][j][k][0];
int blue_val = array[blue - 1 ][j][k][1];
int green_val = array[green - 1][j][k][2];
printf("h:%d w:%d rm: %d gm: %d bm: %d rv: %lu bv: %lu gv:%lu\n",
j, k, red_val, green_val, blue_val, red, blue, green);
gsl_histogram_free (r);
gsl_histogram_free (g);
gsl_histogram_free (b);
}
}
MagickWandTerminus();
return 0;
}
|
