public void FindExtremePoint(Mat image, bool searchDir_left2right, ref List<Point2f> zeroPList) { if (image.Width == 0) { return;// throw new ArgumentNullException(nameof(image)); } // 预处理：中值滤波 Cv2.MedianBlur(image, image, 3); // 计算极值和位置 Point2f extremaLoc; double extremaVal; double minVal, maxVal; var criteria = new TermCriteria(CriteriaTypes.Eps | CriteriaTypes.Count, 20, 0.03); //MinMaxLoc(InputArray src, out double minVal, out double maxVal, out Point minLoc, out Point maxLoc, InputArray? mask = null); Cv2.MinMaxLoc(image, out minVal, out maxVal, out Point minLoc, out Point _); Point2f[] corners = new[] { new Point2f(minLoc.X, minLoc.Y) }; Cv2.CornerSubPix(image, corners, new Size(3, 3), new Size(-1, -1), criteria); extremaVal = minVal; extremaLoc = corners[0]; zeroPList.Add(extremaLoc); } 增加searchDir_left2right的判断程序 基于opencvsharp4.6编写c#代码,生成新的函数

以下是增加了searchDir_left2right判断的基于OpenCvSharp4.6编写的C#函数：

public void FindExtremePoint(Mat image, bool searchDir_left2right, ref List<Point2f> zeroPList)
{
    if (image.Width == 0)
    {
        return;// throw new ArgumentNullException(nameof(image));
    }

    // 预处理：中值滤波
    Cv2.MedianBlur(image, image, 3);

    // 计算极值和位置
    Point2f extremaLoc;
    double extremaVal;
    double minVal, maxVal;
    var criteria = new TermCriteria(CriteriaTypes.Eps | CriteriaTypes.Count, 20, 0.03);

    if (searchDir_left2right)
    {
        // 从左往右找点
        Cv2.MinMaxLoc(image, out _, out maxVal, out _, out Point maxLoc);
    }
    else
    {
        // 从右往左找点
        Cv2.MinMaxLoc(image, out minVal, out _, out Point minLoc, out _, image);
        Point2f[] corners = new[] { new Point2f(minLoc.X, minLoc.Y) };
        Cv2.CornerSubPix(image, corners, new Size(3, 3), new Size(-1, -1), criteria);
        extremaVal = minVal;
        extremaLoc = corners[0];
        zeroPList.Add(extremaLoc);
        return;
    }

    Point2f[] corners2 = new[] { new Point2f(maxLoc.X, maxLoc.Y) };
    Cv2.CornerSubPix(image, corners2, new Size(3, 3), new Size(-1, -1), criteria);

    extremaVal = maxVal;
    extremaLoc = corners2[0];

    zeroPList.Add(extremaLoc);
}

增加了一个bool类型的参数searchDir_left2right，用于控制从左往右或从右往左查找极值点。如果searchDir_left2right为true，就从左往右查找最大值点；否则从右往左查找最小值点，并对其进行精细化处理。最后将极值点的位置信息加入到zeroPList列表中。