AForge Blobcounter - 如何统计分裂的物体？

问题描述

我在计算图像上的小物体时遇到问题。在示例中，我使用了BlobCounter类（来自AForge框架）。但它不识别分裂的对象。这是函数输出



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这是代码

I have a problem with counting small objects on the image. In example I used BlobCounter class (from AForge framework). But it doesnt recognize splitted objects. Here is the function output

http://s3.postimg.org/cwkexxucj/result.jpg[^]

Here is the treshold that method produces

http://s29.postimg.org/y0rze5ulj/treshold.jpg[^]

Here is the code

private void count_Objects_Click(object sender, EventArgs e)
        {
            Bitmap sample = (Bitmap)picProcessed.Image.Clone();

           // create grayscale filter
            Grayscale filter = new Grayscale(0.2125, 0.7154, 0.0721);
            // apply the filter
            Bitmap grayImage = filter.Apply(sample);

            // create threshold filter
            SISThreshold filterT = new SISThreshold();
            // apply the filter
            filterT.ApplyInPlace(grayImage);

            //Because blobcounter looks white objects on black background
            //But we have to count black objects
            Invert filterInvert = new Invert();
            // apply the filter
            filterInvert.ApplyInPlace(grayImage);

            BlobCounter blobCounter = new BlobCounter();
            blobCounter.FilterBlobs = true;
            blobCounter.MinWidth = 2; 
            blobCounter.MinHeight = 2;

            blobCounter.CoupledSizeFiltering = true; 
            blobCounter.ProcessImage(grayImage);
            Blob[] blobs = blobCounter.GetObjectsInformation();

            //manipulations to draw borders around founded objects

            // create convex hull searching algorithm
            GrahamConvexHull hullFinder = new GrahamConvexHull();
            Bitmap image = (Bitmap)picProcessed.Image;
            Bitmap clonimage = (Bitmap)picProcessed.Image.Clone();
            BitmapData data = clonimage.LockBits(new Rectangle(0, 0, image.Width, image.Height), ImageLockMode.ReadWrite, image.PixelFormat);


            // process each blob
            foreach (Blob blob in blobs)
            {
                List<IntPoint> leftPoints, rightPoints, edgePoints;
                edgePoints = new List<IntPoint>();

                // get blob's edge points
                blobCounter.GetBlobsLeftAndRightEdges(blob,
                    out leftPoints, out rightPoints);

                edgePoints.AddRange(leftPoints);
                edgePoints.AddRange(rightPoints);

                // blob's convex hull
                List<IntPoint> hull = hullFinder.FindHull(edgePoints);

                Drawing.Polygon(data, hull, Color.Black);
            }

            clonimage.UnlockBits(data);
            picProcessed.Image = clonimage;
            picProcessed.Refresh();

            int count = blobs.Length;
            MessageBox.Show("Total objects found: " + count);
        }

1 blobcount算法的第一个函数处理图像到二​​进制图像

2然后它寻找blob

3然后它绘制（在原始图像上）blob周围的边界



如何拆分blob？或者也许还有其他方法来计算图像中的对象？

1 First function process image to binary image for blobcount algorithm
2 Then it looks for blobs
3 Then it draws (on original image) borders around blobs

How to split blobs? Or maybe there is other methods for counting objects in image?

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