C# Class AForge.Imaging.Filters.ExtractChannel

Extract RGB channel from image.

Extracts specified channel of color image and returns it as grayscale image.

The filter accepts 24, 32, 48 and 64 bpp color images and produces 8 (if source is 24 or 32 bpp image) or 16 (if source is 48 or 64 bpp image) bpp grayscale image.

Sample usage:

 // create filter ExtractChannel filter = new ExtractChannel( RGB.G ); // apply the filter Bitmap channelImage = filter.Apply( image );

Initial image:

Result image:

Inheritance: BaseFilter

ファイルを表示 Open project: holisticware-admin/MonoVersal.AForgeNET Class Usage Examples

Public Methods

Method	Description
ExtractChannel ( ) : System	Initializes a new instance of the ExtractChannel class.
ExtractChannel ( short channel ) : System	Initializes a new instance of the ExtractChannel class.

Protected Methods

Method	Description
ProcessFilter ( UnmanagedImage sourceData, UnmanagedImage destinationData ) : void	Process the filter on the specified image.

Method Details

ExtractChannel() public method

Initializes a new instance of the ExtractChannel class.

public ExtractChannel ( ) : System
return	System

ExtractChannel() public method

Initializes a new instance of the ExtractChannel class.

public ExtractChannel ( short channel ) : System
channel	short	ARGB channel to extract.
return	System

ProcessFilter() protected method

Process the filter on the specified image.

Can not extract alpha channel from none ARGB image. The /// exception is throw, when alpha channel is requested from RGB image.

protected ProcessFilter ( UnmanagedImage sourceData, UnmanagedImage destinationData ) : void
sourceData	UnmanagedImage	Source image data.
destinationData	UnmanagedImage	Destination image data.
return	void