geometric transform

OpenCV/Form1.cs

@@ -39,8 +39,36 @@ namespace OpenCV
                 OpenCVClass Converter = new OpenCVClass();
 
                 pictureBoxIpl1.ImageIpl = src;
-                //pictureBoxIpl2.ImageIpl = Converter.Symmetry(src, FlipMode.XY);
-                pictureBoxIpl2.ImageIpl = Converter.Rotate(src, -45);
+
+                //CvPoint2D32f[] srcPoints = new CvPoint2D32f[]
+                //{
+                //    new CvPoint2D32f(100.0, 100.0),
+                //    new CvPoint2D32f(src.Width - 100.0, 100.0),
+                //    new CvPoint2D32f(100.0, src.Height - 100.0)
+                //};
+                //CvPoint2D32f[] dstPoints = new CvPoint2D32f[]
+                //{
+                //    new CvPoint2D32f(300.0, 100.0),
+                //    new CvPoint2D32f(src.Width - 100.0, 100.0),
+                //    new CvPoint2D32f(100.0, src.Height - 100.0)
+                //};
+                //pictureBoxIpl2.ImageIpl = Converter.AffineImage(src, srcPoints, dstPoints);
+
+                CvPoint2D32f[] srcPoints = new CvPoint2D32f[]
+                {
+                    new CvPoint2D32f(600.0, 600.0),
+                    new CvPoint2D32f(300.0, 900.0),
+                    new CvPoint2D32f(1300.0, 600.0),
+                    new CvPoint2D32f(1600.0, 900.0)
+                };
+                CvPoint2D32f[] dstPoints = new CvPoint2D32f[]
+                {
+                    new CvPoint2D32f(0.0, 0.0),
+                    new CvPoint2D32f(0.0, src.Height),
+                    new CvPoint2D32f(src.Width, 0.0),
+                    new CvPoint2D32f(src.Width, src.Height)
+                };
+                pictureBoxIpl2.ImageIpl = Converter.PerspectiveImage(src, srcPoints, dstPoints);
             }
             catch (Exception ex)
             {

OpenCV/OpenCVClass.cs

@@ -15,6 +15,9 @@ namespace OpenCV
         IplImage slice;
         IplImage symm;
         IplImage rotate;
+        IplImage affine;
+        IplImage perspective;
+        IplImage draw;
 
         public IplImage GrayScale(IplImage src)
         {
@@ -101,6 +104,33 @@ namespace OpenCV
             return rotate;
         }
 
+        public IplImage AffineImage(IplImage src, CvPoint2D32f[] srcPoints, CvPoint2D32f[] dstPoints)
+        {
+            if (srcPoints.Length != 3 || dstPoints.Length != 3)
+                return null;
+
+            affine = new IplImage(src.Size, BitDepth.U8, 3);
+            CvMat matrix = Cv.GetAffineTransform(srcPoints, dstPoints);
+            Cv.WarpAffine(src, affine, matrix, Interpolation.Linear, CvScalar.RealScalar(0));
+            return affine;
+        }
+
+        public IplImage PerspectiveImage(IplImage src, CvPoint2D32f[] srcPoints, CvPoint2D32f[] dstPoints)
+        {
+            if (srcPoints.Length != 4 || dstPoints.Length != 4)
+                return null;
+
+            perspective = new IplImage(src.Size, BitDepth.U8, 3);
+            CvMat matrix = Cv.GetPerspectiveTransform(srcPoints, dstPoints);
+            Cv.WarpPerspective(src, perspective, matrix, Interpolation.Linear, CvScalar.RealScalar(0));
+            return perspective;
+        }
+
+        public IplImage DrawImage()
+        {
+            draw = new IplImage(new CvSize(640, 480), BitDepth.U8, 3);
+        }
+
         private void Release(params IplImage[] images)
         {
             for (int i = 0; i < images.Length; i++)
@@ -122,7 +152,10 @@ namespace OpenCV
                 resize,
                 slice,
                 symm,
-                rotate
+                rotate,
+                affine,
+                perspective,
+                draw
                 );
         }
     }