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3662745235
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3662745235 | |
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01b1cf22da |
36
helpers.c
36
helpers.c
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@ -1,5 +1,5 @@
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#include <math.h>
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#include "helpers.h"
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#include "helpers.h"
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#include <math.h>
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// Convert image to grayscale
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// Convert image to grayscale
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void grayscale(int height, int width, RGBTRIPLE image[height][width])
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void grayscale(int height, int width, RGBTRIPLE image[height][width])
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@ -8,7 +8,8 @@ void grayscale(int height, int width, RGBTRIPLE image[height][width])
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{
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{
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for (int j = 0; j < width; j++)
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for (int j = 0; j < width; j++)
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{
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{
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int avg = round((image[i][j].rgbtBlue + image[i][j].rgbtGreen + image[i][j].rgbtRed) / (float) 3);
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int avg = round((image[i][j].rgbtBlue + image[i][j].rgbtGreen + image[i][j].rgbtRed) /
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(float) 3);
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image[i][j].rgbtBlue = image[i][j].rgbtGreen = image[i][j].rgbtRed = avg;
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image[i][j].rgbtBlue = image[i][j].rgbtGreen = image[i][j].rgbtRed = avg;
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}
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}
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}
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}
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@ -22,9 +23,12 @@ void sepia(int height, int width, RGBTRIPLE image[height][width])
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{
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{
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for (int j = 0; j < width; j++)
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for (int j = 0; j < width; j++)
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{
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{
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int sepiaRed = round(.393 * image[i][j].rgbtRed + .769 * image[i][j].rgbtGreen + .189 * image[i][j].rgbtBlue);
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int sepiaRed = round(.393 * image[i][j].rgbtRed + .769 * image[i][j].rgbtGreen +
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int sepiaGreen = round(.349 * image[i][j].rgbtRed + .686 * image[i][j].rgbtGreen + .168 * image[i][j].rgbtBlue);
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.189 * image[i][j].rgbtBlue);
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int sepiaBlue = round(.272 * image[i][j].rgbtRed + .534 * image[i][j].rgbtGreen + .131 * image[i][j].rgbtBlue);
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int sepiaGreen = round(.349 * image[i][j].rgbtRed + .686 * image[i][j].rgbtGreen +
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.168 * image[i][j].rgbtBlue);
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int sepiaBlue = round(.272 * image[i][j].rgbtRed + .534 * image[i][j].rgbtGreen +
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.131 * image[i][j].rgbtBlue);
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if (sepiaRed > 255)
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if (sepiaRed > 255)
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{
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{
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@ -88,27 +92,21 @@ void blur(int height, int width, RGBTRIPLE image[height][width])
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{
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{
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for (int j = 0; j < width; j++)
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for (int j = 0; j < width; j++)
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{
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{
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float sumRed = 0, sumGreen = 0, sumBlue = 0;
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int sumRed = 0, sumGreen = 0, sumBlue = 0, count = 0;
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int count = 0;
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for (int k = -1; k < 2; k++)
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for (int k = (i - 1); k <= (i + 1); k++)
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{
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{
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for (int l = -1; l < 2; l++)
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for (int l = (j - 1); l <= (j + 1); l++)
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{
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{
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if (i + k <= 0 || i + k >= height)
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if ((k >= 0 && k <= (height - 1)) && (l >= 0 && l <= (width - 1)))
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{
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{
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continue;
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sumRed += copy[k][l].rgbtRed;
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}
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sumGreen += copy[k][l].rgbtGreen;
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if (j + l <= 0 || j + l >= width)
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sumBlue += copy[k][l].rgbtBlue;
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{
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continue;
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}
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sumRed += copy[i + k][j + l].rgbtRed;
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sumGreen += copy[i + k][j + l].rgbtGreen;
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sumBlue += copy[i + k][j + l].rgbtBlue;
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count++;
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count++;
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}
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}
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}
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}
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}
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image[i][j].rgbtRed = round(sumRed / (float) count);
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image[i][j].rgbtRed = round(sumRed / (float) count);
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image[i][j].rgbtGreen = round(sumGreen / (float) count);
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image[i][j].rgbtGreen = round(sumGreen / (float) count);
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image[i][j].rgbtBlue = round(sumBlue / (float) count);
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image[i][j].rgbtBlue = round(sumBlue / (float) count);
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