/// <summary>
/// Detects any edges within the image.
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></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{TColor, TPacked}"/>.</returns>
public static Image <TColor, TPacked> DetectEdges <TColor, TPacked>(this Image <TColor, TPacked> source, EdgeDetection filter, Rectangle rectangle, bool grayscale = true)
where TColor : struct, IPackedPixel <TPacked>
where TPacked : struct
{
IEdgeDetectorProcessor <TColor, TPacked> processor;
switch (filter)
{
case EdgeDetection.Kayyali:
processor = new KayyaliSampler <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.Kirsch:
processor = new KirschProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.Lapacian3X3:
processor = new Laplacian3X3Processor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.Lapacian5X5:
processor = new Laplacian5X5Processor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.LaplacianOfGaussian:
processor = new LaplacianOfGaussianProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.Prewitt:
processor = new PrewittProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.RobertsCross:
processor = new RobertsCrossProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.Robinson:
processor = new RobinsonProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
case EdgeDetection.Scharr:
processor = new ScharrProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
default:
processor = new SobelProcessor <TColor, TPacked> {
Grayscale = grayscale
};
break;
}
return(DetectEdges(source, rectangle, processor));
}
private static IEdgeDetectorProcessor <TPixel> GetProcessor <TPixel>(EdgeDetection filter, bool grayscale)
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(processor);
}