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AForge.NET Framework
2.2.5 version is available!

Image re-coloring filters

In addition to linear color correction filters and nonlinear color correction filters AForge.NET framework provides number of other filters, which allow to perform different type of none linear image re-coloring.

Below is the list of image re-coloring filters and the result of their application to the below source image.

Source image
Source image

Grayscale
Converts color image into grayscale image.
Grayscale filter

Sepia
Makes an image look like an old brown photo.
Sepia filter

Hue Modifier
Operates in HSL color space and updates pixels' hue values setting it to the specified value.
Hue Modifier filter

Rotate Channels
Rotates RGB channels: red channel is replaced with green, green channel is replaced with blue, blue channel is replaced with red.
Rotate Channels filter

Invert
Inverts specified image.
Invert filter