双阈值二值化

void LibMuraAlg::bilateralThresh(cv::Mat & src, cv::Mat & dst, int lowThresh, int heighThresh)
{
	for (int row = 0; row < src.rows; row++)
	{
		for (int col = 0; col < src.cols; col++)
		{
			if (src.at<uchar>(row, col) > lowThresh && src.at<uchar>(row, col) < heighThresh)
				dst.at<uchar>(row, col) = 255;
		}
	}
}