public void TestSobelFilter3()
{
//arrange
EdgeDetectionFilter sobel = new SobelFilter();
GreyImage image = new GreyImage(2, 3);
//act
sobel.Apply(image);
}
public void TestSobelFilter4()
{
//arrange
EdgeDetectionFilter sobel = new SobelFilter();
GreyImage image = new GreyImage(3, 3);
image.Pixels[0, 0].Color.Data = 50;
image.Pixels[0, 1].Color.Data = 125;
image.Pixels[0, 2].Color.Data = 22;
image.Pixels[1, 0].Color.Data = 12;
image.Pixels[1, 1].Color.Data = 17;
image.Pixels[1, 2].Color.Data = 187;
image.Pixels[2, 0].Color.Data = 201;
image.Pixels[2, 1].Color.Data = 100;
image.Pixels[2, 2].Color.Data = 45;
GreyImage patternImage = new GreyImage(3, 3);
patternImage.Pixels[0, 0].Color.Data = 50;
patternImage.Pixels[0, 1].Color.Data = 125;
patternImage.Pixels[0, 2].Color.Data = 22;
patternImage.Pixels[1, 0].Color.Data = 12;
patternImage.Pixels[1, 1].Color.Data = (byte) ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[1, 1].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[1, 2].Color.Data = 187;
patternImage.Pixels[2, 0].Color.Data = 201;
patternImage.Pixels[2, 1].Color.Data = 100;
patternImage.Pixels[2, 2].Color.Data = 45;
patternImage.Pixels[1, 1].Gradient.Angle = -36;
patternImage.Pixels[1, 1].Gradient.Strength = 207;
//act
sobel.Apply(image);
//assert
Assert.IsTrue(image.IsEqual(patternImage));
}
public void TestSobelFilter5()
{
//arrange
EdgeDetectionFilter sobel = new SobelFilter();
GreyImage image = new GreyImage(5, 4);
image.Pixels[0, 0].Color.Data = 50;
image.Pixels[0, 1].Color.Data = 125;
image.Pixels[0, 2].Color.Data = 22;
image.Pixels[0, 3].Color.Data = 11;
image.Pixels[0, 4].Color.Data = 104;
image.Pixels[1, 0].Color.Data = 12;
image.Pixels[1, 1].Color.Data = 17;
image.Pixels[1, 2].Color.Data = 187;
image.Pixels[1, 3].Color.Data = 0;
image.Pixels[1, 4].Color.Data = 15;
image.Pixels[2, 0].Color.Data = 201;
image.Pixels[2, 1].Color.Data = 100;
image.Pixels[2, 2].Color.Data = 45;
image.Pixels[2, 3].Color.Data = 91;
image.Pixels[2, 4].Color.Data = 17;
image.Pixels[3, 0].Color.Data = 100;
image.Pixels[3, 1].Color.Data = 15;
image.Pixels[3, 2].Color.Data = 18;
image.Pixels[3, 3].Color.Data = 205;
image.Pixels[3, 4].Color.Data = 194;
GreyImage patternImage = new GreyImage(5, 4);
patternImage.Pixels[0, 0].Color.Data = 50;
patternImage.Pixels[0, 1].Color.Data = 125;
patternImage.Pixels[0, 2].Color.Data = 22;
patternImage.Pixels[0, 3].Color.Data = 11;
patternImage.Pixels[0, 4].Color.Data = 104;
patternImage.Pixels[1, 0].Color.Data = 12;
patternImage.Pixels[1, 1].Color.Data = (byte) ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[1, 2].Color.Data = (byte)ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[1, 3].Color.Data = (byte)ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[1, 1].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[1, 2].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[1, 3].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[1, 4].Color.Data = 15;
patternImage.Pixels[2, 0].Color.Data = 201;
patternImage.Pixels[2, 1].Color.Data = (byte)ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[2, 2].Color.Data = (byte)ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[2, 3].Color.Data = (byte)ColorBase.MIN_COLOR_VALUE;
patternImage.Pixels[2, 1].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[2, 2].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[2, 3].BorderType = DigitalImageProcessingLib.BorderType.Border.STRONG;
patternImage.Pixels[2, 4].Color.Data = 17;
patternImage.Pixels[3, 0].Color.Data = 100;
patternImage.Pixels[3, 1].Color.Data = 15;
patternImage.Pixels[3, 2].Color.Data = 18;
patternImage.Pixels[3, 3].Color.Data = 205;
patternImage.Pixels[3, 4].Color.Data = 194;
patternImage.Pixels[1, 1].Gradient.Strength = 207;
patternImage.Pixels[1, 1].Gradient.Angle = -36;
patternImage.Pixels[1, 2].Gradient.Strength = 186;
patternImage.Pixels[1, 2].Gradient.Angle = 32;
patternImage.Pixels[1, 3].Gradient.Strength = 305;
patternImage.Pixels[1, 3].Gradient.Angle = 18;
patternImage.Pixels[2, 1].Gradient.Strength = 234;
patternImage.Pixels[2, 1].Gradient.Angle = -21;
patternImage.Pixels[2, 2].Gradient.Strength = 205;
patternImage.Pixels[2, 2].Gradient.Angle = 41;
patternImage.Pixels[2, 3].Gradient.Strength = 423;
patternImage.Pixels[2, 3].Gradient.Angle = 82;
//act
image = sobel.Apply(image, 4);
//assert
Assert.IsTrue(image.IsEqual(patternImage));
}
/// <summary>
/// Выделение текста на единичном кадре видеопотока
/// </summary>
/// <param name="videoFrame">Кадр видео</param>
/// <returns>true</returns>
public Task<bool> DetectText(GreyVideoFrame videoFrame, int threadsNumber)
{
try
{
if (videoFrame == null || videoFrame.Frame == null)
throw new ArgumentNullException("Null frame in DetectText");
return Task.Run(() =>
{
if (videoFrame.NeedProcess)
{
EdgeDetectionFilter sobel = new SobelFilter();
GradientFilter gradientFiler = new SimpleGradientFilter();
SmoothingFilter gauss = null; //new GaussFilter(this.GaussFilterSize, this.GaussFilterSigma);
SmoothingFilter gaussForCanny = null;
SWTTextDetection sWTTextDetection = null;
if (ParametersUndefined(videoFrame))
{
if (this.UseAdaptiveSmoothing)
gaussForCanny = new AdaptiveGaussFilter(this.GaussFilterSigma);
else
gaussForCanny = new GaussFilter(this.GaussFilterSize, this.GaussFilterSigma);
gauss = new GaussFilter(this.GaussFilterSize, this.GaussFilterSigma);
CannyEdgeDetection canny = new CannyEdgeDetection(gaussForCanny, sobel, this.CannyLowTreshold, this.CannyHighTreshold);
sWTTextDetection = new SWTTextDetection(canny, gauss, gradientFiler, this.VarienceAverageSWRation,
this.AspectRatio, this.DiamiterSWRatio, this.BbPixelsNumberMinRatio, this.BbPixelsNumberMaxRatio, this.ImageRegionHeightRationMin,
this.ImageRegionWidthRatioMin, this.PairsHeightRatio, this.PairsIntensityRatio, this.PairsSWRatio,
this.PairsWidthDistanceSqrRatio, this.PairsOccupationRatio, this.MinLettersNumberInTextRegion, this.MergeByDirectionAndChainEnds);
}
else
{
if (videoFrame.UseAdaptiveSmoothing)
gaussForCanny = new AdaptiveGaussFilter(videoFrame.GaussFilterSigma);
else
gaussForCanny = new GaussFilter(videoFrame.GaussFilterSize, videoFrame.GaussFilterSigma);
gauss = new GaussFilter(videoFrame.GaussFilterSize, videoFrame.GaussFilterSigma);
CannyEdgeDetection canny = new CannyEdgeDetection(gaussForCanny, sobel, videoFrame.CannyLowTreshold, videoFrame.CannyHighTreshold);
sWTTextDetection = new SWTTextDetection(canny, gauss, gradientFiler, videoFrame.VarienceAverageSWRation, videoFrame.AspectRatio,
videoFrame.DiamiterSWRatio, videoFrame.BbPixelsNumberMinRatio, videoFrame.BbPixelsNumberMaxRatio, videoFrame.ImageRegionHeightRationMin,
videoFrame.ImageRegionWidthRatioMin, videoFrame.PairsHeightRatio, videoFrame.PairsIntensityRatio, videoFrame.PairsSWRatio,
videoFrame.PairsWidthDistanceSqrRatio, videoFrame.PairsOccupationRatio, videoFrame.MinLettersNumberInTextRegion, videoFrame.MergeByDirectionAndChainEnds);
}
sWTTextDetection.DetectText(videoFrame.Frame, threadsNumber);
}
return true;
});
}
catch (Exception exception)
{
throw exception;
}
}
/// <summary>
/// Выделение текста на кд\лючевых кадрах видеоролика
/// </summary>
/// <param name="video">Видеоролик</param>
/// <returns>true</returns>
public Task<bool> DetectText(GreyVideo video, int threadsNumber)
{
try
{
if (video == null)
throw new ArgumentNullException("Null video in DetectText");
if (video.Frames == null)
throw new ArgumentNullException("Null video frames in DetectText");
return Task.Run(() =>
{
for (int i = 0; i < video.Frames.Count; i++)
if (video.Frames[i].NeedProcess)
{
EdgeDetectionFilter sobel = new SobelFilter();
SmoothingFilter gauss = new GaussFilter(this.GaussFilterSize, this.GaussFilterSigma);
GradientFilter gradientFiler = new SimpleGradientFilter();
CannyEdgeDetection canny = new CannyEdgeDetection(gauss, sobel, this.CannyLowTreshold, this.CannyHighTreshold);
SWTTextDetection SWTTextDetection = new SWTTextDetection(canny, null, gradientFiler, this.VarienceAverageSWRation,
this.AspectRatio, this.DiamiterSWRatio, this.BbPixelsNumberMinRatio, this.BbPixelsNumberMaxRatio, this.ImageRegionHeightRationMin,
this.ImageRegionWidthRatioMin, this.PairsHeightRatio, this.PairsIntensityRatio, this.PairsSWRatio,
this.PairsWidthDistanceSqrRatio, this.PairsOccupationRatio, this.MinLettersNumberInTextRegion, this.MergeByDirectionAndChainEnds);
SWTTextDetection.DetectText(video.Frames[i].Frame, threadsNumber);
}
return true;
});
}
catch (Exception exception)
{
throw exception;
}
}
