[英]C# image processing on Kinect video using AForge
我的目標 :
使用Kinect視頻進行形狀識別(圖片上的大矩形),在圖片上繪制矩形以突出顯示結果和顯示。
我使用的技術:
http://www.aforgenet.com/articles/shape_checker/
魔術應該如何運作:
我的問題 :
到目前為止整個過程都有效,但當我嘗試在WPF圖像中渲染結果時,它非常滯后......(每10秒1幀)......
我的代碼:
// AllFramesReady is called every time a frame is ready to use...
private void AllFramesReady(object sender, AllFramesReadyEventArgs e)
{
using (ColorImageFrame colorFrame = e.OpenColorImageFrame())
{
if (colorFrame == null)
{
return;
}
_Pixels = new byte[colorFrame.PixelDataLength];
colorFrame.CopyPixelDataTo(_Pixels);
// Analyze the image
int stride = colorFrame.Width * 4;
System.Drawing.Size size = new System.Drawing.Size(colorFrame.Width, colorFrame.Height);
// get the bitmap from bytes
Bitmap btmap = BytesToBmp(_Pixels, size);
//analyze the data...
btmap = _shapeReco.AnalyzeImage(btmap);
// copy the new data back to pixels
_Pixels = BmpToBytes(btmap);
// rendering the analyzed image
imageAnalyzed.Source =
BitmapSource.Create(colorFrame.Width, colorFrame.Height,
96, 96, PixelFormats.Bgr32, null, _Pixels, stride);
}
}
//
// HERE IS MY SHAPE RECOGNIZER THAT IMPLEMENTS THE SHAPE RECOGNITION ALGORITHM
//
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using AForge;
using AForge.Imaging;
using AForge.Math.Geometry;
namespace KinectSetupDev
{
class MyShapeRecognizer
{
private static String TAG = "MyShapeRecognizer";
/***************************************************************************
* VARIABLES *
***************************************************************************/
private SimpleShapeChecker _ShapeChecker;
private Bitmap _Image; // the image to analyze
private Blob[] _Blobs;
private BlobCounter _BlobCounter;
/***************************************************************************
* CONSTRUCTOR *
***************************************************************************/
public MyShapeRecognizer()
{
Debug.Log(TAG, "MyShapeRecognizer");
_ShapeChecker = new SimpleShapeChecker();
_Image = new Bitmap(300, 400);
_Blobs = null;
_BlobCounter = null;
}
/***************************************************************************
* METHODS *
***************************************************************************/
public Bitmap AnalyzeImage(Bitmap image)
{
Debug.Log(TAG, "AnalyzeImage");
this._Image = image;
this.LocatingObjects();
this.AnalyzeObjects();
return _Image;
}
private void LocatingObjects()
{
Debug.Log(TAG, "LocatingObjects");
// lock image
BitmapData bitmapData = _Image.LockBits(
new Rectangle(0, 0, _Image.Width, _Image.Height),
ImageLockMode.ReadOnly, _Image.PixelFormat);
//locating objects
_BlobCounter = new BlobCounter();
_BlobCounter.FilterBlobs = true;
_BlobCounter.MinHeight = 5;
_BlobCounter.MinWidth = 5;
_BlobCounter.ProcessImage(bitmapData);
_Blobs = _BlobCounter.GetObjectsInformation();
// unlock image
_Image.UnlockBits(bitmapData);
}
private void AnalyzeObjects()
{
Debug.Log(TAG, "AnalyzeObjects");
Graphics g = Graphics.FromImage(_Image);
[DRAW RECT OR CIRCLE ON GRAPHICS]
g.Dispose();
}
// Conver list of AForge.NET's points to array of .NET points
private System.Drawing.Point[] ToPointsArray(List<IntPoint> points)
{
System.Drawing.Point[] array = new System.Drawing.Point[points.Count];
for (int i = 0, n = points.Count; i < n; i++)
{
array[i] = new System.Drawing.Point(points[i].X, points[i].Y);
}
return array;
}
}
}
我可以提供完整的代碼(MV C#2010項目......)。 我感謝任何幫助!
謝謝。
嗯,從上面的評論來看,AForge代碼看起來很慢。 從我能想到的,你有以下選擇
也許我在這里失蹤的更多 - 但這些應該讓你走上正軌。
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