private void EdgeDetect()
{
if (_image != null)
{
try
{
if (_isChecked)
{
_progressValue = 0;
base.OnPropertyChanged("ProgressValue");
Bitmap _bmpImage = BitmapConvert.BitmapImageToBitmap(_image);
Bitmap edge;
Canny.DetectCannyEdges(_bmpImage, out edge, _kernelSize, _sigma, _thrHigh, _thrLow);
_cannyImage = BitmapConvert.toBitmapImage(edge);
base.OnPropertyChanged("CannyImage");
Bitmap gf, np, se, we;
Canny.GaussianFilter(_bmpImage, out gf, _kernelSize, _sigma);
_GFImage = BitmapConvert.toBitmapImage(gf);
base.OnPropertyChanged("GFImage");
Canny.Suppression(_bmpImage, out np, _kernelSize, _sigma);
_NMSImage = BitmapConvert.toBitmapImage(np);
base.OnPropertyChanged("NMSImage");
Canny.Threshold(_bmpImage, out se, out we, _kernelSize, _sigma, _thrHigh, _thrLow);
_WEImage = BitmapConvert.toBitmapImage(we);
base.OnPropertyChanged("WEImage");
_SEImage = BitmapConvert.toBitmapImage(se);
base.OnPropertyChanged("SEImage");
}
else
{
Bitmap _bmpImage = BitmapConvert.BitmapImageToBitmap(_image);
//获得灰度图
Image <Gray, byte> grayFrame = new Image <Gray, byte>(_bmpImage);
if (_equalizeHist)
{
grayFrame._EqualizeHist();//autocontrast
}
//高斯平滑
Image <Gray, byte> smoothedGrayFrame = grayFrame.PyrDown();
smoothedGrayFrame = smoothedGrayFrame.PyrUp();
//canny
Image <Gray, byte> cannyFrame = null;
if (_smooth)
{
cannyFrame = smoothedGrayFrame.Canny(_thresh, _threshLinking);
grayFrame = smoothedGrayFrame;
}
else
{
grayFrame = grayFrame.Canny(_thresh, _threshLinking);
}
//局部自适应阈值二值化，阈值本身作为了一个变量，检测更有效
//CvInvoke.cvAdaptiveThreshold(grayFrame, grayFrame, 255, Emgu.CV.CvEnum.ADAPTIVE_THRESHOLD_TYPE.CV_ADAPTIVE_THRESH_MEAN_C, Emgu.CV.CvEnum.THRESH.CV_THRESH_BINARY, adaptiveThresholdBlockSize + adaptiveThresholdBlockSize % 2 + 1, adaptiveThresholdParameter);
CvInvoke.AdaptiveThreshold(grayFrame, grayFrame, 255, Emgu.CV.CvEnum.AdaptiveThresholdType.MeanC, Emgu.CV.CvEnum.ThresholdType.Binary, _blockSize + _blockSize % 2 + 1, _parameter);
//
grayFrame._Not();
//
if (cannyFrame != null)
{
grayFrame._Or(cannyFrame); //试验了一下，这样轮廓会更加明显
}
_cannyImage = BitmapConvert.toBitmapImage(grayFrame.ToBitmap());
base.OnPropertyChanged("CannyImage");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
