C# Class AForge.Imaging.Filters.ColorRemapping

Color remapping.

The filter allows to remap colors of the image. Unlike LevelsLinear filter the filter allow to do non-linear remapping. For each pixel of specified image the filter changes its values (value of each color plane) to values, which are stored in remapping arrays by corresponding indexes. For example, if pixel's RGB value equals to (32, 96, 128), the filter will change it to (RedMap[32], GreenMap[96], BlueMap[128]).

The filter accepts 8 bpp grayscale and 24/32 bpp color images for processing.

Sample usage:

 // create map byte[] map = new byte[256]; for ( int i = 0; i < 256; i++ ) { map[i] = (byte) Math.Min( 255, Math.Pow( 2, (double) i / 32 ) ); } // create filter ColorRemapping filter = new ColorRemapping( map, map, map ); // apply the filter filter.ApplyInPlace( image );

Initial image:

Result image:

Inheritance: BaseInPlacePartialFilter

Show file Open project: holisticware-admin/MonoVersal.AForgeNET

Public Methods

Method	Description
ColorRemapping ( ) : System	Initializes a new instance of the ColorRemapping class. Initializes the filter without any remapping. All pixel values are mapped to the same values.
ColorRemapping ( byte grayMap ) : System	Initializes a new instance of the ColorRemapping class. This constructor is supposed for grayscale images.
ColorRemapping ( byte redMap, byte greenMap, byte blueMap ) : System	Initializes a new instance of the ColorRemapping class.

Protected Methods

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

Method Details

ColorRemapping() public method

Initializes a new instance of the ColorRemapping class.

Initializes the filter without any remapping. All pixel values are mapped to the same values.

public ColorRemapping ( ) : System
return	System

ColorRemapping() public method

Initializes a new instance of the ColorRemapping class.

This constructor is supposed for grayscale images.

public ColorRemapping ( byte grayMap ) : System
grayMap	byte	Gray map.
return	System

ColorRemapping() public method

Initializes a new instance of the ColorRemapping class.

public ColorRemapping ( byte redMap, byte greenMap, byte blueMap ) : System
redMap	byte	Red map.
greenMap	byte	Green map.
blueMap	byte	Blue map.
return	System

ProcessFilter() protected method

Process the filter on the specified image.

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