contour

OpenCV/Forms/MainForm.Designer.cs

@@ -31,6 +31,8 @@
             this.btnCanny = new System.Windows.Forms.Button();
             this.btnSobel = new System.Windows.Forms.Button();
             this.btnLapace = new System.Windows.Forms.Button();
+            this.btnContour = new System.Windows.Forms.Button();
+            this.btnScanContour = new System.Windows.Forms.Button();
             this.SuspendLayout();
             // 
             // btnCanny
@@ -63,11 +65,33 @@
             this.btnLapace.UseVisualStyleBackColor = true;
             this.btnLapace.Click += new System.EventHandler(this.btnLapace_Click);
             // 
+            // btnContour
+            // 
+            this.btnContour.Location = new System.Drawing.Point(122, 13);
+            this.btnContour.Name = "btnContour";
+            this.btnContour.Size = new System.Drawing.Size(102, 23);
+            this.btnContour.TabIndex = 0;
+            this.btnContour.Text = "Contour";
+            this.btnContour.UseVisualStyleBackColor = true;
+            this.btnContour.Click += new System.EventHandler(this.btnContour_Click);
+            // 
+            // btnScanContour
+            // 
+            this.btnScanContour.Location = new System.Drawing.Point(122, 42);
+            this.btnScanContour.Name = "btnScanContour";
+            this.btnScanContour.Size = new System.Drawing.Size(102, 23);
+            this.btnScanContour.TabIndex = 0;
+            this.btnScanContour.Text = "ScanContour";
+            this.btnScanContour.UseVisualStyleBackColor = true;
+            this.btnScanContour.Click += new System.EventHandler(this.btnScanContour_Click);
+            // 
             // MainForm
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(470, 365);
+            this.Controls.Add(this.btnScanContour);
+            this.Controls.Add(this.btnContour);
             this.Controls.Add(this.btnLapace);
             this.Controls.Add(this.btnSobel);
             this.Controls.Add(this.btnCanny);
@@ -82,5 +106,7 @@
         private System.Windows.Forms.Button btnCanny;
         private System.Windows.Forms.Button btnSobel;
         private System.Windows.Forms.Button btnLapace;
+        private System.Windows.Forms.Button btnContour;
+        private System.Windows.Forms.Button btnScanContour;
     }
 }

OpenCV/Forms/MainForm.cs

@@ -78,5 +78,39 @@ namespace OpenCV.Forms
 
             converter.Dispose();
         }
+
+        private void btnContour_Click(object sender, EventArgs e)
+        {
+            IplImage src = GetImage();
+            if (src == null)
+                return;
+
+            OpenCVClass converter = new OpenCVClass();
+            IplImage converted = converter.FindContour(src);
+
+            CVDialog dlg = new CVDialog();
+            dlg.Source = src;
+            dlg.Converted = converted;
+            dlg.ShowDialog();
+
+            converter.Dispose();
+        }
+
+        private void btnScanContour_Click(object sender, EventArgs e)
+        {
+            IplImage src = GetImage();
+            if (src == null)
+                return;
+
+            OpenCVClass converter = new OpenCVClass();
+            IplImage converted = converter.ScanContour(src);
+
+            CVDialog dlg = new CVDialog();
+            dlg.Source = src;
+            dlg.Converted = converted;
+            dlg.ShowDialog();
+
+            converter.Dispose();
+        }
     }
 }

OpenCV/OpenCV.csproj

@@ -84,6 +84,7 @@
     <Compile Include="Forms\MainForm.Designer.cs">
       <DependentUpon>MainForm.cs</DependentUpon>
     </Compile>
+    <Compile Include="OpenCV\Contour.cs" />
     <Compile Include="OpenCV\Edge.cs" />
     <Compile Include="OpenCV\OpenCVClass.cs" />
     <Compile Include="Program.cs" />

OpenCV/OpenCV/Contour.cs

@@ -0,0 +1,76 @@
+using OpenCvSharp;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OpenCV.OpenCV
+{
+    internal partial class OpenCVClass : IDisposable
+    {
+
+        public IplImage FindContour(IplImage src)
+        {
+            _cvt = new IplImage(src.Size, BitDepth.U8, 3);
+            Cv.Copy(src, _cvt);
+            _bin = Binary(src, 150);
+
+            CvMemStorage storage = new CvMemStorage();
+            CvSeq<CvPoint> contours;
+
+            Cv.FindContours(_bin, storage, out contours, CvContour.SizeOf, ContourRetrieval.List, ContourChain.ApproxNone);
+
+            //while (contours != null)
+            //{
+            //    for (int i = 0; i < contours.Total; i++)
+            //    {
+            //        Cv.DrawCircle(_cvt, contours[i].Value, 3, CvColor.Red);
+
+            //    }
+
+            //    contours = contours.HNext;
+            //}
+
+            Cv.DrawContours(_cvt, contours, CvColor.Yellow, CvColor.Red, 1, 2, LineType.AntiAlias);
+            Cv.ReleaseMemStorage(storage);
+            Cv.ClearSeq(contours);
+
+            return _cvt;
+        }
+
+        public IplImage ScanContour(IplImage src)
+        {
+            _cvt = new IplImage(src.Size, BitDepth.U8, 3);
+            Cv.Copy(src, _cvt);
+            _bin = Binary(src, 150);
+
+            CvMemStorage storage = new CvMemStorage();
+            //CvSeq<CvPoint> contours;
+
+            CvContourScanner scanner = Cv.StartFindContours(_bin, storage, CvContour.SizeOf, ContourRetrieval.List, ContourChain.ApproxNone);
+
+            //while ((contours = Cv.FindNextContour(scanner)) != null)
+            //{
+            //    if (contours[0].Value == new CvPoint(1, 1))
+            //        continue;
+
+            //    Cv.DrawContours(_cvt, contours, CvColor.Yellow, CvColor.Red, 1, 2, LineType.AntiAlias);
+            //}
+
+            foreach (CvSeq<CvPoint> contour in scanner)
+            {
+                if (contour[0].Value == new CvPoint(1, 1))
+                    continue;
+
+                _cvt.DrawContours(contour, CvColor.Yellow, CvColor.Red, 1, 2, LineType.AntiAlias);
+            }
+
+            //Cv.EndFindContours(scanner);
+
+            Cv.ReleaseMemStorage(storage);
+
+            return _cvt;
+        }
+    }
+}

OpenCV/OpenCV/OpenCVClass.cs

@@ -7,14 +7,16 @@ namespace OpenCV.OpenCV
     partial class OpenCVClass : IDisposable
     {
         IplImage _cvt;
+        IplImage _gray;
+        IplImage _bin;
 
         IplConvKernel _convKernel;
 
         public IplImage GrayScale(IplImage src)
         {
-            _cvt = new IplImage(src.Size, BitDepth.U8, 1);
-            Cv.CvtColor(src, _cvt, ColorConversion.BgrToGray);
-            return _cvt;
+            _gray = new IplImage(src.Size, BitDepth.U8, 1);
+            Cv.CvtColor(src, _gray, ColorConversion.BgrToGray);
+            return _gray;
         }
 
         public IplImage InversionImage(IplImage src)
@@ -26,9 +28,9 @@ namespace OpenCV.OpenCV
 
         public IplImage Binary(IplImage src, int threshold)
         {
-            _cvt = GrayScale(src);
-            Cv.Threshold(_cvt, _cvt, threshold, 255, ThresholdType.Binary);
-            return _cvt;
+            _bin = GrayScale(src);
+            Cv.Threshold(_bin, _bin, threshold, 255, ThresholdType.Binary);
+            return _bin;
         }
 
         public IplImage Blur(IplImage src)
@@ -247,7 +249,10 @@ namespace OpenCV.OpenCV
 
         public virtual void Dispose()
         {
-            Release(_cvt);
+            Release(
+                _cvt, 
+                _gray, 
+                _bin);
         }
         
         public IplConvKernel ConvKernel