C# 图像到 PathGeometry

Question

我正在尝试将图像转换为 PathGeometry。我上传一张图片，然后进行精明的边缘检测，现在我想将其转换为 PathGeometry。我的总体计划是用不同的颜色填充它。

所以我尝试了这个：`public Shape MakeSape(Brush customColor, double[,] image) { 路径 graphPath = new Path();

        graphPath.Fill = customColor;
        graphPath.Stroke = Brushes.Black;
        PathFigure pf = new PathFigure();
        pf.StartPoint = new Point(0, 0);
        pf.IsClosed = true;
        int row = image.GetLength(0);
        int column = image.GetLength(1);

        for (int y = 0; y < row; y++)
        {
            for (int x = 0; x < column; x++)
            {
                if (image[y, x] >= LowThreshold)
                {
                    pf.Segments.Add(new LineSegment(new Point(x, y), true));
                }
            }

        }

        PathGeometry pg = new PathGeometry();
        pg.Figures.Add(pf);
        graphPath.Data = pg;

        ImageAsShape = graphPath;
        return graphPath;
    }` 

看起来应该可行，但我只是变得全黑了。