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CS50-Blur

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void blur(int height, int width, RGBTRIPLE image[height][width])
void blur(int height, int width, RGBTRIPLE image[height][width])
{
{
RGBTRIPLE imgcpy2[height][width];
RGBTRIPLE imgcpy2[height][width];
for (int hi = 0; hi < height; hi++)
for (int hi = 0; hi < height; hi++)
{
{
for (int wj = 0; wj < width; wj++)
for (int wj = 0; wj < width; wj++)
{
{
//set original pixel info into a new array:
//set original pixel info into a new array:
imgcpy2[hi][wj] = image[hi][wj];
imgcpy2[hi][wj] = image[hi][wj];
}
}
}
}
for (int i = 0; i < height; i++)
for (int i = 0; i < height; i++)
{
{
for (int j = 0; j < width; j++)
for (int j = 0; j < width; j++)
{
{
// Variables to sum pixels
// Variables to sum pixels
int avpixr = 0;
int avpixr = 0;
int avpixg = 0;
int avpixg = 0;
int avpixb = 0;
int avpixb = 0;
// Counter to use in averages
// Counter to use in averages
float n = 0.00;
float n = 0.00;


//Top Row pixels
//Top Row pixels
//Top left corner
//Top left corner
if (i == 0 && j == 0)
if (i == 0 && j == 0)
{
{
for (int h = i; h < i + 2; h++)
for (int h = i; h < i + 2; h++)
{
{
// the pixel right
// the pixel right
for (int w = j; w < j + 2; w++)
for (int w = j; w < j + 2; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}
//Top row middle pixels
//Top row middle pixels
if (i == 0 && j > 0 && j < width)
if (i == 0 && j > 0 && j < width - 1)
{
{
for (int h = i; h < i + 2; h++)
for (int h = i; h < i + 2; h++)
{
{
// the pixel left and right
// the pixel left and right
for (int w = j - 1; w < j + 2; w++)
for (int w = j - 1; w < j + 2; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}
//Top right corner pixel
//Top right corner pixel
if (i == 0 && j == width)
if (i == 0 && j == width - 1)
{
{
for (int h = i; h < i + 2; h++)
for (int h = i; h < i + 2; h++)
{
{
// the pixel left
// the pixel left
for (int w = j - 1; w == j; w++)
for (int w = j - 1; w < j + 1; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}


//Middle rows:
//Middle rows:
//Middle leftmost pixel
//Middle leftmost pixel
if (i > 0 && i < height && j == 0)
if (i > 0 && i < height - 1 && j == 0)
{
{
// the pixels above through below
// the pixels above through below
for (int h = i - 1; h < i + 2; h++)
for (int h = i - 1; h < i + 2; h++)
{
{
// the pixels right
// the pixels right
for (int w = j; w < j + 2; w++)
for (int w = j; w < j + 2; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}
//Middle row middle pixels
//Middle row middle pixels
if (i > 0 && i < height && j > 0 && j < width)
if (i > 0 && i < height - 1 && j > 0 && j < width - 1)
{
{
// the pixels above through below
// the pixels above through below
for (int h = i - 1; h < i + 2; h++)
for (int h = i - 1; h < i + 2; h++)
{
{
// the pixels right and left
// the pixels right and left
for (int w = j - 1; w < j + 2; w++)
for (int w = j - 1; w < j + 2; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}
// Middle rightmost pixel
// Middle rightmost pixel
if (i > 0 && i < height && j == width)
if (i > 0 && i < height - 1 && j == width - 1)
{
{
// the pixels above through below
// the pixels above through below
for (int h = i - 1; h < i + 2; h++)
for (int h = i - 1; h < i + 2; h++)
{
{
// the pixels left
// the pixels left
for (int w = j - 1; w < j + 1; w++)
for (int w = j - 1; w < j + 1; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}


//Bottom rows:
//Bottom rows:
//Bottom left corner
//Bottom left corner
if (i == height && j == 0)
if (i == height - 1 && j == 0)
{
{
for (int h = i - 1; h < i + 1; h++)
for (int h = i - 1; h < i + 1; h++)
{
{
// the pixel right
// the pixel right
for (int w = j; w < j + 2; w++)
for (int w = j; w < j + 2; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}
//Pixels bottom middle
//Pixels bottom middle
if (i == height && j > 0 && j < width)
if (i == height - 1 && j > 0 && j < width - 1)
{
{
// the pixels above through itself
// the pixels above through itself
for (int h = i - 1; h < i + 1; h++)
for (int h = i - 1; h < i + 1; h++)
{
{
// the pixels right and left
// the pixels right and left
for (int w = j - 1; w < j + 2; w++)
for (int w = j - 1; w < j + 2; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;
}
}
}
}
}
}
//Pixels right corner
//Pixels right corner
if (i == height && j == width)
if (i == height - 1 && j == width - 1)
{
{
for (int h = i - 1; h < i + 1; h++)
for (int h = i - 1; h < i + 1; h++)
{
{


for (int w = j - 1; w < j + 1; w++)
for (int w = j - 1; w < j + 1; w++)
{
{
avpixr += imgcpy2[h][w].rgbtRed;
avpixr += imgcpy2[h][w].rgbtRed;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixg += imgcpy2[h][w].rgbtGreen;
avpixb += imgcpy2[h][w].rgbtBlue;
avpixb += imgcpy2[h][w].rgbtBlue;
n++;
n++;


}
}
}
}
}
}
image[i][j].rgbtBlue = roundf(avpixb / (float)n);
image[i][j].rgbtBlue = roundf(avpixb / (float)n);
image[i][j].rgbtGreen = roundf(avpixg / (float)n);
image[i][j].rgbtGreen = roundf(avpixg / (float)n);
image[i][j].rgbtRed = roundf(avpixr / (float)n);
image[i][j].rgbtRed = roundf(avpixr / (float)n);


}
}
}
}


return;
return;
}
}
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