I've been looking through the similar questions and they don't really help me. I clicked the link to see the results and double checked my code but it just doesn't seem to want to work. Here's my code:
void blur(int height, int width, RGBTRIPLE image[height][width])
{
//probably super redundant but to store the original values in
//a separate array that we can access
RGBTRIPLE orgArr[height][width];
for(int i = 0; i < height; i++){
for(int j = 0; j < width; j++){
orgArr[i][j] = image[i][j];
}
}
//now onto the actual array
int numElements;
for(int i = 0; i < height; i++){
for(int j = 0; j < width; j++){
//we need to look at all pixels within a 1 row/1 column basis and get the
//average of their color values and assign to the middle pixel
float avgRed;
float avgGreen;
float avgBlue;
if(i > 0 && j > 0 && i < height - 1 && j < width - 1){
//in the middle
numElements = 9;
avgRed = orgArr[i - 1][j - 1].rgbtRed + orgArr[i - 1][j].rgbtRed + orgArr[i - 1][j + 1].rgbtRed + orgArr[i][j - 1].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i][j + 1].rgbtRed + orgArr[i + 1][j - 1].rgbtRed + orgArr[i + 1][j].rgbtRed + orgArr[i + 1][j + 1].rgbtRed;
avgGreen = orgArr[i - 1][j - 1].rgbtGreen + orgArr[i - 1][j].rgbtGreen + orgArr[i - 1][j + 1].rgbtGreen + orgArr[i][j - 1].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i][j + 1].rgbtGreen + orgArr[i + 1][j - 1].rgbtGreen + orgArr[i + 1][j].rgbtGreen + orgArr[i + 1][j + 1].rgbtGreen;
avgBlue = orgArr[i - 1][j - 1].rgbtBlue + orgArr[i - 1][j].rgbtBlue + orgArr[i - 1][j + 1].rgbtBlue + orgArr[i][j - 1].rgbtBlue+ orgArr[i][j].rgbtBlue + orgArr[i][j + 1].rgbtBlue + orgArr[i + 1][j - 1].rgbtBlue + orgArr[i + 1][j].rgbtBlue + orgArr[i + 1][j + 1].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)(round(avgRed));
image[i][j].rgbtGreen = (int)(round(avgGreen));
image[i][j].rgbtBlue = (int)(round(avgBlue));
}
else if(i == 0 && j == 0){
//corner case 1
numElements = 4;
avgRed = orgArr[i][j].rgbtRed + orgArr[i + 1][j + 1].rgbtRed + orgArr[i][j + 1].rgbtRed + orgArr[i + 1][j].rgbtRed;
avgGreen = orgArr[i][j].rgbtGreen + orgArr[i + 1][j + 1].rgbtGreen + orgArr[i][j + 1].rgbtGreen + orgArr[i + 1][j].rgbtGreen;
avgBlue = orgArr[i][j].rgbtBlue + orgArr[i + 1][j + 1].rgbtBlue + orgArr[i][j + 1].rgbtBlue + orgArr[i + 1][j].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)(round(avgRed));
image[i][j].rgbtGreen = (int)(round(avgGreen));
image[i][j].rgbtBlue = (int)(round(avgBlue));
}
else if(i == 0 && j == width - 1){
//corner case 2
numElements = 4;
avgRed = orgArr[i][j - 1].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i + 1][j - 1].rgbtRed + orgArr[i + 1][j].rgbtRed;
avgGreen = orgArr[i][j - 1].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i + 1][j - 1].rgbtGreen + orgArr[i + 1][j].rgbtGreen;
avgBlue = orgArr[i][j - 1].rgbtBlue + orgArr[i][j].rgbtBlue + orgArr[i + 1][j - 1].rgbtBlue + orgArr[i + 1][j].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)avgRed;
image[i][j].rgbtGreen = (int)avgGreen;
image[i][j].rgbtBlue = (int)avgBlue;
}
else if(i == height - 1 && j == 0){
//corner case 3
numElements = 4;
avgRed = orgArr[i - 1][j].rgbtRed + orgArr[i - 1][j + 1].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i][j + 1].rgbtRed;
avgGreen = orgArr[i - 1][j].rgbtGreen + orgArr[i - 1][j + 1].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i][j + 1].rgbtGreen;
avgBlue = orgArr[i - 1][j].rgbtBlue + orgArr[i - 1][j + 1].rgbtBlue + orgArr[i][j].rgbtBlue + orgArr[i][j + 1].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)avgRed;
image[i][j].rgbtGreen = (int)avgGreen;
image[i][j].rgbtBlue = (int)avgBlue;
}
else if(i == height - 1 && j == width - 1){
//corner case 4
numElements = 4;
avgRed = orgArr[i][j].rgbtRed + orgArr[i][j - 1].rgbtRed + orgArr[i - 1][j - 1].rgbtRed + orgArr[i - 1][j].rgbtRed;
avgGreen = orgArr[i][j].rgbtGreen + orgArr[i][j - 1].rgbtGreen + orgArr[i - 1][j - 1].rgbtGreen + orgArr[i - 1][j].rgbtGreen;
avgBlue = orgArr[i][j].rgbtBlue + orgArr[i][j - 1].rgbtBlue + orgArr[i - 1][j - 1].rgbtBlue + orgArr[i - 1][j].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)avgRed;
image[i][j].rgbtGreen = (int)avgGreen;
image[i][j].rgbtBlue = (int)avgBlue;
}
else if(j == 0){
numElements = 6;
avgRed = orgArr[i - 1][j].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i + 1][j].rgbtRed + orgArr[i - 1][j + 1].rgbtRed + orgArr[i][j + 1].rgbtRed + orgArr[i + 1][j + 1].rgbtRed;
avgGreen = orgArr[i - 1][j].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i + 1][j].rgbtGreen + orgArr[i - 1][j + 1].rgbtRed + orgArr[i][j + 1].rgbtGreen+ orgArr[i + 1][j + 1].rgbtGreen;
avgBlue = orgArr[i - 1][j].rgbtBlue + orgArr[i][j].rgbtBlue + orgArr[i + 1][j].rgbtBlue+ orgArr[i - 1][j + 1].rgbtBlue+ orgArr[i][j + 1].rgbtBlue + orgArr[i + 1][j + 1].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)(round(avgRed));
image[i][j].rgbtGreen = (int)(round(avgGreen));
image[i][j].rgbtBlue = (int)(round(avgBlue));
}
else if(j == width - 1){
numElements = 6;
avgRed = orgArr[i - 1][j].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i + 1][j].rgbtRed + orgArr[i - 1][j - 1].rgbtRed + orgArr[i][j - 1].rgbtRed + orgArr[i + 1][j - 1].rgbtRed;
avgGreen = orgArr[i - 1][j].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i + 1][j].rgbtGreen + orgArr[i - 1][j - 1].rgbtRed + orgArr[i][j - 1].rgbtGreen+ orgArr[i + 1][j - 1].rgbtGreen;
avgBlue = orgArr[i - 1][j].rgbtBlue + orgArr[i][j].rgbtBlue + orgArr[i + 1][j].rgbtBlue+ orgArr[i - 1][j - 1].rgbtBlue+ orgArr[i][j - 1].rgbtBlue + orgArr[i + 1][j - 1].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)(round(avgRed));
image[i][j].rgbtGreen = (int)(round(avgGreen));
image[i][j].rgbtBlue = (int)(round(avgBlue));
}
else if(i == 0){
numElements = 6;
avgRed = orgArr[i][j + 1].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i][j - 1].rgbtRed + orgArr[i + 1][j - 1].rgbtRed + orgArr[i + 1][j].rgbtRed + orgArr[i + 1][j + 1].rgbtRed;
avgGreen = orgArr[i][j + 1].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i][j - 1].rgbtGreen + orgArr[i + 1][j - 1].rgbtGreen+ orgArr[i + 1][j].rgbtGreen + orgArr[i + 1][j + 1].rgbtGreen;
avgBlue = orgArr[i][j + 1].rgbtBlue + orgArr[i][j].rgbtBlue + orgArr[i][j - 1].rgbtBlue + orgArr[i + 1][j - 1].rgbtBlue + orgArr[i + 1][j].rgbtBlue + orgArr[i + 1][j + 1].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)(round(avgRed));
image[i][j].rgbtGreen = (int)(round(avgGreen));
image[i][j].rgbtBlue = (int)(round(avgBlue));
}
else if(i == height - 1){
numElements = 6;
avgRed = orgArr[i][j - 1].rgbtRed + orgArr[i][j].rgbtRed + orgArr[i][j + 1].rgbtRed + orgArr[i - 1][j - 1].rgbtRed + orgArr[i - 1][j].rgbtRed + orgArr[i - 1][j + 1].rgbtRed;
avgGreen = orgArr[i][j - 1].rgbtGreen + orgArr[i][j].rgbtGreen + orgArr[i][j + 1].rgbtGreen + orgArr[i - 1][j - 1].rgbtGreen + orgArr[i - 1][j].rgbtGreen + orgArr[i - 1][j + 1].rgbtGreen;
avgBlue = orgArr[i][j - 1].rgbtBlue + orgArr[i][j].rgbtBlue + orgArr[i][j + 1].rgbtBlue + orgArr[i - 1][j - 1].rgbtBlue + orgArr[i - 1][j].rgbtBlue + orgArr[i - 1][j + 1].rgbtBlue;
avgRed = round(avgRed / numElements);
avgGreen = round(avgGreen / numElements);
avgBlue = round(avgBlue / numElements);
image[i][j].rgbtRed = (int)avgRed;
image[i][j].rgbtGreen = (int)avgGreen;
image[i][j].rgbtBlue = (int)avgBlue;
}
}
}
return;
}
and then I get as output through check50:
:( blur correctly filters 3x3 image expected "70 85 95\n80 9...", not "70 85 95\n80 9..." :( blur correctly filters 4x4 image expected "70 85 95\n80 9...", not "70 85 95\n80 9..."
For more output on the exact thing I got wrong it says something like: Expected output: ... ...117 130 140 Actual output: ... ... 117 128 140 This only happens for 2 lines on the 3x3 area and 4 for the 4x4. Is it a rounding error?
