如何在AForge中找到Rectangle中的圓

Question

我試圖在AForge檢測Rectangle中的AForge 。 我已經成功確定了Rectangles但無法在Rectangle找到circles 。 如何在AForge找到另一個形狀內的形狀。

string strPath = Server.MapPath("~/Recipt001.png");
Bitmap myBitmap = new Bitmap(strPath);

//Some filters Grayscale, invert, threshold

//Blod Filtering                      


BlobCounter blobCounter = new BlobCounter();
blobCounter.ProcessImage(temp);
blobCounter.ObjectsOrder = ObjectsOrder.YX;
blobCounter.FilterBlobs = true;

Blob[] blobs = blobCounter.GetObjectsInformation();
Graphics g = Graphics.FromImage(myBitmap);
Pen redPen = new Pen(Color.Red, 2);
SimpleShapeChecker shapeChecker = new SimpleShapeChecker();

// dictionary of color to highlight different shapes
Dictionary<PolygonSubType, Color> colors = new Dictionary<PolygonSubType, Color>();

colors.Add(PolygonSubType.Unknown, Color.White);
colors.Add(PolygonSubType.Trapezoid, Color.Orange);
colors.Add(PolygonSubType.Parallelogram, Color.Red);
colors.Add(PolygonSubType.Rectangle, Color.Green);
colors.Add(PolygonSubType.Square, Color.Blue);
colors.Add(PolygonSubType.Rhombus, Color.Gray);

colors.Add(PolygonSubType.EquilateralTriangle, Color.Pink);
colors.Add(PolygonSubType.IsoscelesTriangle, Color.Purple);
colors.Add(PolygonSubType.RectangledTriangle, Color.SkyBlue);
colors.Add(PolygonSubType.RectangledIsoscelesTriangle, Color.SeaGreen);

for (int i = 0, n = blobs.Length; i < n; i++)
{
    List<IntPoint> corners;
    List<IntPoint> edgePoints = blobCounter.GetBlobsEdgePoints(blobs[i]);
    Point center;
    double radius;

    if (shapeChecker.IsQuadrilateral(edgePoints, out corners))
    {
        if (shapeChecker.CheckPolygonSubType(corners) == PolygonSubType.Rectangle)
        {
            g.DrawPolygon(redPen, ToPointsArray(corners));
        }
    }
}

redPen.Dispose();
g.Dispose();

Answer 1

MATLAB中的圖像處理庫甚至圖像處理都不允許您在ROI內部搜索ROI（ ROI - 像矩形或圓圈一樣的興趣區域 ）。 概念是CROP REGION - >搜索區域內的對象

因此，首先找到主矩形，然后將圖像裁剪為矩形並在其中執行圓搜索。 否則搜索所有圓和所有矩形，然后使用簡單的數學將圓分類為屬於哪個矩形。