C# Class Accord.Imaging.Filters.ReplaceChannel

Replace RGB channel of color imgae.

Replaces specified RGB channel of color image with specified grayscale image.

The filter is quite useful in conjunction with ExtractChannel filter (however may be used alone in some cases). Using the ExtractChannel filter it is possible to extract one of RGB channel, perform some image processing with it and then put it back into the original color image.

The filter accepts 24, 32, 48 and 64 bpp color images for processing.

Sample usage:

 // extract red channel ExtractChannel extractFilter = new ExtractChannel( RGB.R ); Bitmap channel = extractFilter.Apply( image ); // threshold channel Threshold thresholdFilter = new Threshold( 230 ); thresholdFilter.ApplyInPlace( channel );             // put the channel back ReplaceChannel replaceFilter = new ReplaceChannel( RGB.R, channel ); replaceFilter.ApplyInPlace( image );

Initial image:

Result image:

Inheritance: BaseInPlacePartialFilter

Afficher le fichier Open project: accord-net/framework Class Usage Examples

Méthodes publiques

Méthode	Description
ReplaceChannel ( short channel ) : System	Initializes a new instance of the ReplaceChannel class.
ReplaceChannel ( short channel, Bitmap channelImage ) : System	Initializes a new instance of the ReplaceChannel class.
ReplaceChannel ( short channel, UnmanagedImage channelImage ) : System	Initializes a new instance of the YCbCrReplaceChannel class.

Méthodes protégées

Méthode	Description
ProcessFilter ( UnmanagedImage image, Rectangle rect ) : void	Process the filter on the specified image.

Private Methods

Méthode	Description
ReplaceChannel ( ) : System

Method Details

ProcessFilter() protected méthode

Process the filter on the specified image.

Channel image was not specified. Channel image size does not match source /// image size. Channel image's format does not correspond to format of the source image. Can not replace alpha channel of none ARGB image. The /// exception is throw, when alpha channel is requested to be replaced in RGB image.

protected ProcessFilter ( UnmanagedImage image, Rectangle rect ) : void
image	UnmanagedImage	Source image data.
rect	System.Drawing.Rectangle	Image rectangle for processing by the filter.
Résultat	void

ReplaceChannel() public méthode

Initializes a new instance of the ReplaceChannel class.

public ReplaceChannel ( short channel ) : System
channel	short	ARGB channel to replace.
Résultat	System

ReplaceChannel() public méthode

Initializes a new instance of the ReplaceChannel class.

public ReplaceChannel ( short channel, Bitmap channelImage ) : System
channel	short	ARGB channel to replace.
channelImage	System.Drawing.Bitmap	Channel image to use for replacement.
Résultat	System

ReplaceChannel() public méthode

Initializes a new instance of the YCbCrReplaceChannel class.

public ReplaceChannel ( short channel, UnmanagedImage channelImage ) : System
channel	short	RGB channel to replace.
channelImage	UnmanagedImage	Unmanaged channel image to use for replacement.
Résultat	System