/**
* Computes the mean squared error (MSE) between the two images.
*
* @param imgA first image. Not modified.
* @param imgB second image. Not modified.
* @return error between the two images.
*/
public static double computeMeanSquaredError(ImageInt8 imgA, ImageInt8 imgB) {
final int h = imgA.getHeight();
final int w = imgA.getWidth();
double total = 0;
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
double difference = imgA.get(x, y) - imgB.get(x, y);
total += difference * difference;
}
}
return total / (w * h);
}
