OpenCvSharp 编写多线程CircularCaliper找圆心函数 ， 输入图像、找圆扇形区域的最小半径和最大半径、找圆扇形中心点、设定扇形区域起始角度、扇形区域结束角度 先剪出找圆扇形区域图像 输入Caliper个数，宽度、长度、 输入从内到外找圆心、从黑到白找圆 并行计Caliper区域 中心圆可设定请编写函数

以下是使用OpenCvSharp编写多线程CircularCaliper找圆心函数的示例代码：

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using OpenCvSharp;

public class CircularCaliperFinder
{
    private readonly Mat _srcImage;
    private readonly int _minRadius;
    private readonly int _maxRadius;
    private readonly Point _center;
    private readonly double _startAngle;
    private readonly double _endAngle;
    private readonly int _caliperCount;
    private readonly int _caliperWidth;
    private readonly int _caliperLength;
    private readonly bool _findFromInside;
    private readonly bool _findFromBlackToWhite;

    public CircularCaliperFinder(Mat srcImage, int minRadius, int maxRadius, Point center, double startAngle, double endAngle, int caliperCount, int caliperWidth, int caliperLength, bool findFromInside, bool findFromBlackToWhite)
    {
        _srcImage = srcImage;
        _minRadius = minRadius;
        _maxRadius = maxRadius;
        _center = center;
        _startAngle = startAngle;
        _endAngle = endAngle;
        _caliperCount = caliperCount;
        _caliperWidth = caliperWidth;
        _caliperLength = caliper