/// <summary>
/// Detects any edges within the image.
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="filter">The filter for detecting edges.</param>
/// <param name="rectangle">
/// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
/// </param>
/// <param name="grayscale">Whether to convert the image to Grayscale first. Defaults to true.</param>
/// <returns>The <see cref="Image{TPixel}"/>.</returns>
public static Image<TPixel> DetectEdges<TPixel>(this Image<TPixel> source, EdgeDetection filter, Rectangle rectangle, bool grayscale = true)
where TPixel : struct, IPixel<TPixel>
{
IEdgeDetectorProcessor<TPixel> processor;
switch (filter)
{
case EdgeDetection.Kayyali:
processor = new KayyaliProcessor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.Kirsch:
processor = new KirschProcessor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.Lapacian3X3:
processor = new Laplacian3X3Processor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.Lapacian5X5:
processor = new Laplacian5X5Processor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.LaplacianOfGaussian:
processor = new LaplacianOfGaussianProcessor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.Prewitt:
processor = new PrewittProcessor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.RobertsCross:
processor = new RobertsCrossProcessor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.Robinson:
processor = new RobinsonProcessor<TPixel> { Grayscale = grayscale };
break;
case EdgeDetection.Scharr:
processor = new ScharrProcessor<TPixel> { Grayscale = grayscale };
break;
default:
processor = new SobelProcessor<TPixel> { Grayscale = grayscale };
break;
}
return DetectEdges(source, rectangle, processor);
}
private static IEdgeDetectorProcessor <TPixel> GetProcessor <TPixel>(EdgeDetectionOperators filter, bool grayscale)
where TPixel : struct, IPixel <TPixel>
{
IEdgeDetectorProcessor <TPixel> processor;
switch (filter)
{
case EdgeDetectionOperators.Kayyali:
processor = new KayyaliProcessor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.Kirsch:
processor = new KirschProcessor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.Laplacian3x3:
processor = new Laplacian3x3Processor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.Laplacian5x5:
processor = new Laplacian5x5Processor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.LaplacianOfGaussian:
processor = new LaplacianOfGaussianProcessor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.Prewitt:
processor = new PrewittProcessor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.RobertsCross:
processor = new RobertsCrossProcessor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.Robinson:
processor = new RobinsonProcessor <TPixel>(grayscale);
break;
case EdgeDetectionOperators.Scharr:
processor = new ScharrProcessor <TPixel>(grayscale);
break;
default:
processor = new SobelProcessor <TPixel>(grayscale);
break;
}
return(processor);
}
private static IImageProcessor GetProcessor(EdgeDetectionOperators filter, bool grayscale)
{
IImageProcessor processor;
switch (filter)
{
case EdgeDetectionOperators.Kayyali:
processor = new KayyaliProcessor(grayscale);
break;
case EdgeDetectionOperators.Kirsch:
processor = new KirschProcessor(grayscale);
break;
case EdgeDetectionOperators.Laplacian3x3:
processor = new Laplacian3x3Processor(grayscale);
break;
case EdgeDetectionOperators.Laplacian5x5:
processor = new Laplacian5x5Processor(grayscale);
break;
case EdgeDetectionOperators.LaplacianOfGaussian:
processor = new LaplacianOfGaussianProcessor(grayscale);
break;
case EdgeDetectionOperators.Prewitt:
processor = new PrewittProcessor(grayscale);
break;
case EdgeDetectionOperators.RobertsCross:
processor = new RobertsCrossProcessor(grayscale);
break;
case EdgeDetectionOperators.Robinson:
processor = new RobinsonProcessor(grayscale);
break;
case EdgeDetectionOperators.Scharr:
processor = new ScharrProcessor(grayscale);
break;
default:
processor = new SobelProcessor(grayscale);
break;
}
return(processor);
}
