C# Class Accord.Imaging.Filters.Sepia

Sepia filter - old brown photo.

The filter makes an image look like an old brown photo. The main idea of the algorithm: transform to YIQ color space; modify it; transform back to RGB.

1) RGB -> YIQ: Y = 0.299 * R + 0.587 * G + 0.114 * B I = 0.596 * R - 0.274 * G - 0.322 * B Q = 0.212 * R - 0.523 * G + 0.311 * B

2) update: I = 51 Q = 0

3) YIQ -> RGB: R = 1.0 * Y + 0.956 * I + 0.621 * Q G = 1.0 * Y - 0.272 * I - 0.647 * Q B = 1.0 * Y - 1.105 * I + 1.702 * Q

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

Sample usage:

// create filter Sepia filter = new Sepia( ); // apply the filter filter.ApplyInPlace( image );

Initial image:

Result image:

Inheritance: BaseInPlacePartialFilter

Show file Open project: accord-net/framework Class Usage Examples

Public Methods

Method	Description
Sepia ( ) : System	Initializes a new instance of the Sepia class.

Protected Methods

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

Method Details

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

Sepia() public method

Initializes a new instance of the Sepia class.

public Sepia ( ) : System
return	System