dst[0] = (unsigned char)(sum_r / blurArea);
dst[1] = (unsigned char)(sum_g / blurArea);
dst[2] = (unsigned char)(sum_b / blurArea);
dst[0] = (unsigned char)(sum_r / blurArea);
dst[1] = (unsigned char)(sum_g / blurArea);
dst[2] = (unsigned char)(sum_b / blurArea);