siim
/
cs50
mirror of https://github.com/me50/kukemuna.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

automated commit by check50 [check50=True]

This commit is contained in:
kukemuna 2024-03-12 22:18:46 +02:00
commit 6d713c5c09
1 changed files with 127 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

127
helpers.c Normal file
View File

@ -0,0 +1,127 @@
#include "helpers.h"
#include <math.h>
#include <stdio.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 avg = round((image[i][j].rgbtBlue + image[i][j].rgbtGreen + image[i][j].rgbtRed) /
(float) 3);
image[i][j].rgbtBlue = image[i][j].rgbtGreen = image[i][j].rgbtRed = avg;
}
}
return;
}
// Reflect image horizontally
void reflect(int height, int width, RGBTRIPLE image[height][width])
{
RGBTRIPLE tmp[height][width];
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
tmp[i][j] = image[i][width - j - 1];
}
}
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
image[i][j] = tmp[i][j];
}
}
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 sumRed = 0, sumGreen = 0, sumBlue = 0, count = 0;
for (int k = (i - 1); k <= (i + 1); k++)
{
for (int l = (j - 1); l <= (j + 1); l++)
{
if ((k >= 0 && k <= (height - 1)) && (l >= 0 && l <= (width - 1)))
{
sumRed += copy[k][l].rgbtRed;
sumGreen += copy[k][l].rgbtGreen;
sumBlue += copy[k][l].rgbtBlue;
count++;
}
}
}
image[i][j].rgbtRed = round(sumRed / (float) count);
image[i][j].rgbtGreen = round(sumGreen / (float) count);
image[i][j].rgbtBlue = round(sumBlue / (float) count);
}
}
return;
}
// Detect edges
void edges(int height, int width, RGBTRIPLE image[height][width])
{
int Gx[3][3] = {{-1, 0, 1}, {-2, 0, 2}, {-1, 0, 1}};
int Gy[3][3] = {{-1, -2, -1}, {0, 0, 0}, {1, 2, 1}};
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 sumRedGx = 0, sumGreenGx = 0, sumBlueGx = 0, sumRedGy = 0, sumGreenGy = 0,
sumBlueGy = 0;
for (int k = (i - 1); k <= (i + 1); k++)
{
for (int l = (j - 1); l <= (j + 1); l++)
{
if ((k >= 0 && k <= (height - 1)) && (l >= 0 && l <= (width - 1)))
{
sumRedGx += copy[k][l].rgbtRed * Gx[i - k + 1][j - l + 1];
sumGreenGx += copy[k][l].rgbtGreen * Gx[i - k + 1][j - l + 1];
sumBlueGx += copy[k][l].rgbtBlue * Gx[i - k + 1][j - l + 1];
sumRedGy += copy[k][l].rgbtRed * Gy[i - k + 1][j - l + 1];
sumGreenGy += copy[k][l].rgbtGreen * Gy[i - k + 1][j - l + 1];
sumBlueGy += copy[k][l].rgbtBlue * Gy[i - k + 1][j - l + 1];
}
}
}
image[i][j].rgbtRed = fmin(round(sqrt(pow(sumRedGx, 2) + pow(sumRedGy, 2))), 255);
image[i][j].rgbtGreen = fmin(round(sqrt(pow(sumGreenGx, 2) + pow(sumGreenGy, 2))), 255);
image[i][j].rgbtBlue = fmin(round(sqrt(pow(sumBlueGx, 2) + pow(sumBlueGy, 2))), 255);
}
}
return;
}