public static float EqualPixelRatio(ImageMatrix lhs, ImageMatrix rhs) { int eq = 0; for (int x = 0; x < lhs.Width; ++x) { for (int y = 0; y < lhs.Height; ++y) { if (!(rhs.Get(x, y) ^ lhs.Get(x, y))) { eq++; } } } return((float)eq / (lhs.Width * lhs.Height)); }