static void subtract8(byte[] image, byte[] bias, int pixels)
{
int imagePos = 0;
int biasPos = 0;
while (pixels-- != 0)
{
image[imagePos] = image[imagePos] > bias[biasPos] ? (byte)(image[imagePos] - bias[biasPos]) : (byte)0;
imagePos++;
biasPos++;
}
}