C# CV.MemStorage类代码示例

		private void FindRectangles(Image<Gray, Byte> blackAndWhiteImage)
		{
			m_FoundRectangles.Clear();

			using (MemStorage storage = new MemStorage()) //allocate storage for contour approximation
			{
				for (Contour<Point> contours = blackAndWhiteImage.FindContours(
					Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE,
					Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_LIST,
					storage);
					contours != null;
					contours = contours.HNext)
				{
					Contour<Point> currentContour = contours.ApproxPoly(contours.Perimeter * 0.05, storage);
					//Debug.WriteLine(currentContour.Area);

					if (currentContour.Area > 250) //only consider contours with area greater than 250
					{
						if (currentContour.Total == 4) //The contour has 4 vertices.
						{
							if (IsRectangle(currentContour))
							{
								m_FoundRectangles.Add(currentContour.GetMinAreaRect());
							}
						}
					}
				}
			}
		}

        public void ContourCoordinates()
        {
            Image<Bgr, Byte> img = this.ShowCamera();
            Image<Gray, Byte> g_img = this.FilterImage(img);
            Image<Gray, Byte> r_img = new Image<Gray, Byte>(new Size(g_img.Width, g_img.Height));
            this.h = g_img.Width;
            this.w = g_img.Height;

            using (MemStorage storage = new MemStorage()) //allocate storage for contour approximation
            {
                for (Contour<Point> contours = g_img.FindContours(
                    Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_NONE,
                    Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_CCOMP,
                    storage);
                    contours != null;
                    contours = contours.HNext)
                {
                    Contour<Point> contour = contours.ApproxPoly(contours.Perimeter * 0.0005, storage);

                    Point[] pts = contour.ToArray();
                    LineSegment2D[] edges = PointCollection.PolyLine(pts, false);

                    CvInvoke.cvDrawContours(r_img, contour, new MCvScalar(200), new MCvScalar(0, 200,0), 5, -1, LINE_TYPE.FOUR_CONNECTED, new Point(0, 0));
                    for (int k = 0; k < pts.Length; k++)
                    {
                        //r_img.Draw(new CircleF(pts[k], 2), new Gray(255), 1);
                        this.showimg = r_img;
                        //this.Coord2d.Add(pts[k]);
                        List<Point> p = new List<Point>();
                        p.Add(pts[k]);
                        matrix.Add(p);
                    }
                }
            }
        }

        /// <summary>
        /// Create a new HOGDescriptor using the specific parameters
        /// </summary>
        public HOGDescriptor(
            Size winSize,
            Size blockSize,
            Size blockStride,
            Size cellSize,
            int nbins,
            int derivAperture,
            double winSigma,
            double L2HysThreshold,
            bool gammaCorrection)
        {
            _ptr = CvHOGDescriptorCreate(
            ref winSize,
            ref blockSize,
            ref blockStride,
            ref cellSize,
            nbins,
            derivAperture,
            winSigma,
            0,
            L2HysThreshold,
            gammaCorrection);

             _rectStorage = new MemStorage();
             _rectSeq = new Seq<Rectangle>(_rectStorage);
        }

 /// <summary>
 /// Creates a child memory storage that is similar to simple memory storage except for the differences in the memory allocation/deallocation mechanism. When a child storage needs a new block to add to the block list, it tries to get this block from the parent. The first unoccupied parent block available is taken and excluded from the parent block list. If no blocks are available, the parent either allocates a block or borrows one from its own parent, if any. In other words, the chain, or a more complex structure, of memory storages where every storage is a child/parent of another is possible. When a child storage is released or even cleared, it returns all blocks to the parent. In other aspects, the child storage is the same as the simple storage
 /// </summary>
 /// <returns>Child MemStorage</returns>
 public MemStorage CreateChildMemStorage()
 {
     IntPtr childStoragePtr = CvInvoke.cvCreateChildMemStorage(_ptr);
      MemStorage childStorage = new MemStorage(childStoragePtr);
      //_childStorageList.Add(childStorage);
      return childStorage;
 }

 public SignDetector(Image<Bgr, Byte> stopSignModel)
 {
     _detector2 = new SURFDetector(500, false);
     using (Image<Gray, Byte> redMask = GetColorPixelMask(stopSignModel))
     {
         try
         {
             _tracker2 = new Features2DTracker<float>(_detector2.DetectFeatures(redMask, null));
         }
         catch { }
     }
     _octagonStorage2 = new MemStorage();
     _octagon2 = new Contour<Point>(_octagonStorage2);
     _octagon2.PushMulti(new Point[] { 
         //hexagon
         new Point(1, 0),
         new Point(2, 0),
         new Point(3, 1),
         new Point(2, 2),
         new Point(1, 2),
         new Point(0, 1)},
         //octagon
     //new Point(1, 0),
     //new Point(2, 0),
     //new Point(3, 1),
     //new Point(3, 2),
     //new Point(2, 3),
     //new Point(1, 3),
     //new Point(0, 2),
     //new Point(0, 1)},
        Emgu.CV.CvEnum.BACK_OR_FRONT.FRONT);
 }

        public Form1()
        {
            InitializeComponent();

            grabber = new Emgu.CV.Capture("C:/Users/L33549.CITI/Desktop/a.avi");
            grabber.QueryFrame();
            frameWidth = grabber.Width;
            frameHeight = grabber.Height;
            //detector = new AdaptiveSkinDetector(1, AdaptiveSkinDetector.MorphingMethod.NONE);
            hsv_min = new Hsv(0, 45, 0);
            hsv_max = new Hsv(20, 255, 255);
            YCrCb_min = new Ycc(0, 129, 40);
            YCrCb_max = new Ycc(255, 185, 135);
            box = new MCvBox2D();
            ellip = new Ellipse();

            contourStorage = new MemStorage();
            approxStorage = new MemStorage();
            hullStorage = new MemStorage();
            defectsStorage = new MemStorage();

            tipPts = new Point[MAX_POINTS];   // coords of the finger tips
            foldPts = new Point[MAX_POINTS];  // coords of the skin folds between fingers
            depths = new float[MAX_POINTS];   // distances from tips to folds
            cogPt = new Point();
            fingerTips = new List<Point>();
            face = new CascadeClassifier("C:/Users/L33549.CITI/Desktop/AbuseAnalysis/HandGestureRecognition/HandGestureRecognition/HandGestureRecognition/haar/Original/haarcascade_hand.xml");

            Application.Idle += new EventHandler(FrameGrabber);

            /*foreach (var potentialSensor in KinectSensor.KinectSensors)
            {
                if (potentialSensor.Status == KinectStatus.Connected)
                {
                    this.sensor = potentialSensor;
                    break;
                }
            }

            if (null != this.sensor)
            {
                // Turn on the color stream to receive color frames
                this.sensor.ColorStream.Enable(ColorImageFormat.RgbResolution640x480Fps30);

                // Allocate space to put the pixels we'll receive
                this.colorPixels = new byte[this.sensor.ColorStream.FramePixelDataLength];

                // This is the bitmap we'll display on-screen
                this.colorBitmap = new WriteableBitmap(this.sensor.ColorStream.FrameWidth, this.sensor.ColorStream.FrameHeight, 96.0, 96.0, PixelFormats.Bgr32, null);

                // Set the image we display to point to the bitmap where we'll put the image data
                //this.Image.Source = this.colorBitmap;

                // Add an event handler to be called whenever there is new color frame data
                this.sensor.ColorFrameReady += this.SensorColorFrameReady;

                // Start the sensor!
                this.sensor.Start();
            }*/
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog Openfile = new OpenFileDialog();
            if (Openfile.ShowDialog() == DialogResult.OK)
            {
                Image<Bgr, byte> My_Image = new Image<Bgr, byte>(Openfile.FileName);
                Image<Gray, byte> gray_image = My_Image.Convert<Gray, byte>();
                Image<Gray, byte> eh_gray_image = My_Image.Convert<Gray, byte>();
                Image<Gray, byte> smooth_gray_image = My_Image.Convert<Gray, byte>();
                Image<Gray, byte> ed_gray_image = new Image<Gray, byte>(gray_image.Size);
                Image<Bgr, byte> final_image = new Image<Bgr, byte>(Openfile.FileName);
                MemStorage stor = new MemStorage();
                List<MCvBox2D> detectedLicensePlateRegionList = new List<MCvBox2D>();

                CvInvoke.cvEqualizeHist(gray_image, eh_gray_image);
                CvInvoke.cvSmooth(eh_gray_image, smooth_gray_image, Emgu.CV.CvEnum.SMOOTH_TYPE.CV_GAUSSIAN, 3, 3, 0, 0);
                //CvInvoke.cvAdaptiveThreshold(smooth_gray_image, bi_gray_image, 255, Emgu.CV.CvEnum.ADAPTIVE_THRESHOLD_TYPE.CV_ADAPTIVE_THRESH_GAUSSIAN_C, Emgu.CV.CvEnum.THRESH.CV_THRESH_BINARY, 71, 1);
                CvInvoke.cvCanny(smooth_gray_image, ed_gray_image, 100, 50, 3);
                Contour<Point> contours = ed_gray_image.FindContours(Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE, Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_TREE, stor);
                DetectPlate(contours, detectedLicensePlateRegionList);

                for (int i = 0; i < detectedLicensePlateRegionList.Count; i++)
                {
                    final_image.Draw(detectedLicensePlateRegionList[i], new Bgr(Color.Red), 2);
                }
                imageBox1.Image = My_Image;
                imageBox2.Image = gray_image;
                imageBox3.Image = eh_gray_image;
                imageBox4.Image = smooth_gray_image;
                imageBox5.Image = ed_gray_image;
                imageBox6.Image = final_image;
            }
        }

        /// <summary>
        /// Detect license plate from the given image
        /// </summary>
        /// <param name="img">The image to search license plate from</param>
        /// <param name="licensePlateImagesList">A list of images where the detected license plate regions are stored</param>
        /// <param name="filteredLicensePlateImagesList">A list of images where the detected license plate regions (with noise removed) are stored</param>
        /// <param name="detectedLicensePlateRegionList">A list where the regions of license plate (defined by an MCvBox2D) are stored</param>
        /// <returns>The list of words for each license plate</returns>
        public List<List<Word>> DetectLicensePlate(
            Image<Bgr, byte> img,
            List<Image<Gray, Byte>> licensePlateImagesList,
            List<Image<Gray, Byte>> filteredLicensePlateImagesList,
            List<MCvBox2D> detectedLicensePlateRegionList)
        {
            List<List<Word>> licenses = new List<List<Word>>();

            // Convert image to gray
            using (Image<Gray, byte> gray = img.Convert<Gray, Byte>())

            // Create Canny image
            using (Image<Gray, Byte> canny = new Image<Gray, byte>(gray.Size))

            //Create MemStorage
            using (MemStorage stor = new MemStorage())
            {
                //Convert gray with Canny Algorithm
                CvInvoke.cvCanny(gray, canny, 130, 70, 3);

                //List all Contour
                Contour<Point> contours = canny.FindContours(
                     Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE,
                     Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_TREE,
                     stor);

                //Check Contour
                FindLicensePlate(contours, gray, canny, licensePlateImagesList, filteredLicensePlateImagesList, detectedLicensePlateRegionList, licenses);
            }

            return licenses;
        }

 /// <summary>
 /// Create a new HOGDescriptor
 /// </summary>
 public HOGDescriptor()
 {
    _ptr = CvHOGDescriptorCreateDefault();
    _rectStorage = new MemStorage();
    _rectSeq = new Seq<Rectangle>(_rectStorage);
    _vector = new VectorOfFloat();
 }

 //public Bitmap _grayImg;
 //public Bitmap _canndyImg;
 public ArrowSignDetector()
 {
     _stor = new MemStorage();
     _defaultStor = new MemStorage();
     _tempStor = new MemStorage();
     //   _defaultContour = FindDefault();
 }

        private static Image<Gray, Byte> FilterPlate(Image<Gray, Byte> plate)
        {
            Image<Gray, Byte> thresh = plate.ThresholdBinaryInv(new Gray(120), new Gray(255));

            Image<Gray, Byte> plateMask = new Image<Gray, byte>(plate.Size);
            Image<Gray, Byte> plateCanny = plate.Canny(new Gray(100), new Gray(50));
            MemStorage stor = new MemStorage();
            {
                plateMask.SetValue(255.0);
                for (
                   Contour<Point> contours = plateCanny.FindContours(
                      Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE,
                      Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_EXTERNAL,
                      stor);
                   contours != null; contours = contours.HNext)
                {
                    Rectangle rect = contours.BoundingRectangle;
                    if (rect.Height > (plate.Height >> 1))
                    {
                        rect.X -= 1; rect.Y -= 1; rect.Width += 2; rect.Height += 2;
                        rect.Intersect(plate.ROI);

                        plateMask.Draw(rect, new Gray(0.0), -1);
                    }
                }

                thresh.SetValue(0, plateMask);
            }

            thresh._Erode(1);
            thresh._Dilate(1);

            return thresh;
        }

        public HandDetector(string hsvFnm, int width, int height)
        {
            Size scale = new Size(width/IMG_SCALE, height/IMG_SCALE);
            scaleImg = new Image<Bgr, Byte>(scale);
            hsvImg = new Image<Hsv, Byte>(scale);
            imgThreshed = new Image<Gray, Byte>(scale);

            // storage for contour, hull, and defect calculations by OpenCV
            contourStorage = new MemStorage();
            approxStorage = new MemStorage();
            hullStorage = new MemStorage();
            defectsStorage = new MemStorage();

            msgFont = new Font("SansSerif", 18, FontStyle.Bold, GraphicsUnit.Pixel);

            cogPt = new Point();
            fingerTips = new List<Point>();
            namedFingers = new List<FingerNameClass.FingerName>();

            tipPts = new Point[MAX_POINTS];   // coords of the finger tips
            foldPts = new Point[MAX_POINTS];  // coords of the skin folds between fingers
            depths = new float[MAX_POINTS];   // distances from tips to folds

            hueLower = 0;
            hueUpper = 20;
            satLower = 50;
            satUpper = 255;
            briLower = 0;
            briUpper = 255;
        }

      private void ProcessFrame(object sender, EventArgs e)
      {
         using (MemStorage storage = new MemStorage()) //create storage for motion components
         {
            Image<Bgr, Byte> image = _capture.QuerySmallFrame().PyrUp(); //reduce noise from the image
            capturedImageBox.Image = image;

            //update the motion history
            _motionHistory.Update(image.Convert<Gray, Byte>());

            #region get a copy of the motion mask and enhance its color
            Image<Gray, Byte> motionMask = _motionHistory.Mask;
            double[] minValues, maxValues;
            System.Drawing.Point[] minLoc, maxLoc;
            motionMask.MinMax(out minValues, out maxValues, out minLoc, out maxLoc);
            motionMask._Mul(255.0 / maxValues[0]);
            #endregion

            //create the motion image 
            Image<Bgr, Byte> motionImage = new Image<Bgr, byte>(motionMask.Size);
            //display the motion pixels in blue (first channel)
            motionImage[0] = motionMask;

            //Threshold to define a motion area, reduce the value to detect smaller motion
            double minArea = 100;

            storage.Clear(); //clear the storage
            Seq<MCvConnectedComp> motionComponents = _motionHistory.GetMotionComponents(storage);

            //iterate through each of the motion component
            foreach (MCvConnectedComp comp in motionComponents)
            {
               //reject the components that have small area;
               if (comp.area < minArea) continue;

               // find the angle and motion pixel count of the specific area
               double angle, motionPixelCount;
               _motionHistory.MotionInfo(comp.rect, out angle, out motionPixelCount);

               //reject the area that contains too few motion
               if (motionPixelCount < comp.area * 0.05) continue;

               //Draw each individual motion in red
               DrawMotion(motionImage, comp.rect, angle, new Bgr(Color.Red));
            }

            // find and draw the overall motion angle
            double overallAngle, overallMotionPixelCount;
            _motionHistory.MotionInfo(motionMask.ROI, out overallAngle, out overallMotionPixelCount);
            DrawMotion(motionImage, motionMask.ROI, overallAngle, new Bgr(Color.Green));

            //Display the amount of motions found on the current image
            UpdateText(String.Format("Total Motions found: {0}; Motion Pixel count: {1}", motionComponents.Total, overallMotionPixelCount));

            //Display the image of the motion
            motionImageBox.Image = motionImage;
         }
      }

 /// <summary>
 /// Get the model points stored in this detector
 /// </summary>
 /// <returns>The model points stored in this detector</returns>
 public MKeyPoint[] GetModelPoints()
 {
     using (MemStorage stor = new MemStorage())
      {
     Seq<MKeyPoint> modelPoints = new Seq<MKeyPoint>(stor);
     CvPlanarObjectDetectorGetModelPoints(_ptr, modelPoints);
     return modelPoints.ToArray();
      }
 }

 /// <summary>
 /// Detect planar object from the specific image
 /// </summary>
 /// <param name="image">The image where the planar object will be detected</param>
 /// <param name="h">The homography matrix which will be updated</param>
 /// <returns>The four corners of the detected region</returns>
 public PointF[] Detect(Image<Gray, Byte> image, HomographyMatrix h)
 {
     using (MemStorage stor = new MemStorage())
      {
     Seq<PointF> corners = new Seq<PointF>(stor);
     CvPlanarObjectDetectorDetect(_ptr, image, h, corners);
     return corners.ToArray();
      }
 }