opencvsharp瑕疵检测的实现示例

   Cv2.BilateralFilter(imageorg, gs, 0, 20, 5);   //高斯双边模糊
   //imageorg为源图 Mat;
   //gs是滤波后 Mat; 

//先转灰度图像 
   Cv2.CvtColor(gs, image_gray,ColorConversionCodes.RGB2GRAY);   
//在转二值图像
   Cv2.Threshold(image_gray, bin, 100, 255, ThresholdTypes.BinaryInv);

           //发现轮廓
            OpenCvSharp.Point[][] contours2;
            HierarchyIndex[] hierarchy2;
            Cv2.FindContours(bin, out contours2, out hierarchy2, RetrievalModes.External, ContourApproximationModes.ApproxNone);

           //绘制轮廓
              for (int i = 0; i < contours2.Length; i++)
            {
                double size = Cv2.ArcLength(contours2[i], true);
                if(size > Double.Parse(textBox1.Text))
                Cv2.DrawContours(imageorg, contours2,i, new Scalar(0, 0, 255), 3);            
            }

           //显示
            Bitmap bitmap = BitmapConverter.ToBitmap(gs);
            pictureBox1.Image = bitmap;
            Cv2.ImWrite("12.jpg", imageorg);

              private void button6_Click(object sender, EventArgs e)
        {
            Mat imageorg = Cv2.ImRead("E:\\CS学习\\opencvsharp2\\opencvsharp2\\data9.jpg");
            Mat image_gray = new Mat();
            Mat gs = new Mat();
            Mat bin=new Mat();
            Cv2.BilateralFilter(imageorg, gs, 0, 20, 5);   //高斯双边模糊
            //图纸转换
            Cv2.CvtColor(gs, image_gray,ColorConversionCodes.RGB2GRAY); 
            Cv2.Threshold(image_gray, bin, 100, 255, ThresholdTypes.BinaryInv);
            //发现轮廓
            OpenCvSharp.Point[][] contours2;
            HierarchyIndex[] hierarchy2;
            Cv2.FindContours(bin, out contours2, out hierarchy2, RetrievalModes.External, ContourApproximationModes.ApproxNone);
            //绘制指定轮廓 
            for (int i = 0; i < contours2.Length; i++)
            {
                double size = Cv2.ArcLength(contours2[i], true);
                if(size > Double.Parse(textBox1.Text))
                Cv2.DrawContours(imageorg, contours2,i, new Scalar(0, 0, 255), 3);

            }
            //显示
            Bitmap bitmap = BitmapConverter.ToBitmap(imageorg);
            pictureBox1.Image = bitmap;
            Cv2.ImWrite("12.jpg", bin);
        }