CV2.Canny()；CV2.FindContours()

public?staticMat?FindContours(Mat?srcImage)

?????{???

???????Mat?src_gray =?newMat();

???????CV2.CvtColor(srcImage,src_gray,?ColorConversionCodes.RGB2GRAY);//轉(zhuǎn)換為灰度圖

???????CV2.Blur(src_gray,src_gray,?new?OpenCvSharp.Size(2, 2));?????//濾波

???????Mat?canny_Image =?newMat();

???????CV2.Canny(src_gray,canny_Image, 100, 200);??????//Canny邊緣檢測

? ? ? ? ?OpenCvSharp.Point[][] contours;

???????HierarchyIndex[] hierarchly;

???????CV2.FindContours(canny_Image,out?contours,?out?hierarchly,RetrievalModes.Tree,ContourApproximationModes.ApproxSimple,?newOpenCvSharp.Point(0, 0));???//獲得輪廓??

? ? ? ? ?Mat?dst_Image =?Mat.Zeros(canny_Image.Size(),srcImage.Type());

? ? ? ? ?Random?rnd =?newRandom();

???????for?(int?i = 0; i <contours.Length; i++)

? ? ? ? ?{

?????????Scalar?color =?newScalar(rnd.Next(0,255), rnd.Next(0,255), rnd.Next(0,255));

?????????CV2.DrawContours(dst_Image, contours, i, color, 2,LineTypes.Link8,hierarchly);???????//畫出輪廓

? ? ? ? ?}

???????return?dst_Image;???//返回結(jié)果

???????//returncanny_Image;???

??????}

?private?void?button20_Click(object?sender,?EventArgs?e)

??????{

???????Mat?srcImage =?CV2.ImRead(@"D:\Users\FengJianming\C# \OpenCVSharp\OpenCVSharp\logo.jpg");?????//讀取原始圖?

???????Mat?dst_Image =FindContours(srcImage);????//調(diào)用輪廓查找函數(shù)

???????//Mat canny_Image =FindContours(srcImage);

???????CV2.ImShow("原始圖:", srcImage);

???????CV2.ImShow("輪廓圖", dst_Image);

???????//CV2.ImShow("CannyImage",canny_Image);