blob: 7db229f2dcb4ce4dd71485b54a23a83838303ab7 (
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
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
|
#include "helpers.h"
#include <math.h>
// Convert image to grayscale
void grayscale(int height, int width, RGBTRIPLE image[height][width])
{
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
int gray =
round((image[i][j].rgbtRed + image[i][j].rgbtBlue + image[i][j].rgbtGreen) / 3.0);
image[i][j].rgbtRed = gray;
image[i][j].rgbtBlue = gray;
image[i][j].rgbtGreen = gray;
}
}
return;
}
// Convert image to sepia
void sepia(int height, int width, RGBTRIPLE image[height][width])
{
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
int sepiaRed = round(.393 * image[i][j].rgbtRed + .769 * image[i][j].rgbtGreen +
.189 * image[i][j].rgbtBlue);
if (sepiaRed > 255)
{
sepiaRed = 255;
}
int sepiaBlue = round(.272 * image[i][j].rgbtRed + .534 * image[i][j].rgbtGreen +
.131 * image[i][j].rgbtBlue);
if (sepiaBlue > 255)
{
sepiaBlue = 255;
}
int sepiaGreen = round(.349 * image[i][j].rgbtRed + .686 * image[i][j].rgbtGreen +
.168 * image[i][j].rgbtBlue);
if (sepiaGreen > 255)
{
sepiaGreen = 255;
}
image[i][j].rgbtRed = sepiaRed;
image[i][j].rgbtBlue = sepiaBlue;
image[i][j].rgbtGreen = sepiaGreen;
}
}
return;
}
// Reflect image horizontally
void reflect(int height, int width, RGBTRIPLE image[height][width])
{
for (int i = 0; i < height; i++)
{
for (int j = 0; j < floor(width / 2); j++)
{
RGBTRIPLE temp = image[i][j];
image[i][j] = image[i][width - j - 1];
image[i][width - j - 1] = temp;
}
}
return;
}
// Blur image
void blur(int height, int width, RGBTRIPLE image[height][width])
{
RGBTRIPLE copy[height][width];
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
copy[i][j] = image[i][j];
}
}
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
int red = 0;
int blue = 0;
int green = 0;
float count = 0.0;
for (int k = i - 1; k <= i + 1; k++)
{
if (k >= 0 && k < height)
{
for (int l = j - 1; l <= j + 1; l++)
{
if (l >= 0 && l < width)
{
red += copy[k][l].rgbtRed;
blue += copy[k][l].rgbtBlue;
green += copy[k][l].rgbtGreen;
count++;
}
}
}
}
if (count > 0)
{
image[i][j].rgbtRed = round(red / count);
image[i][j].rgbtBlue = round(blue / count);
image[i][j].rgbtGreen = round(green / count);
}
}
}
return;
}
|
