C# Class AForge.Imaging.Filters.ThresholdedDifference

Calculate difference between two images and threshold it.

The filter produces similar result as applying Difference filter and then Threshold filter - thresholded difference between two images. Result of this image processing routine may be useful in motion detection applications or finding areas of significant difference.

The filter accepts 8 and 24/32color images for processing. In the case of color images, the image processing routine differences sum over 3 RGB channels (Manhattan distance), i.e. |diffR| + |diffG| + |diffB|.

Sample usage:

 // create filter ThresholdedDifference filter = new ThresholdedDifference( 60 ); // apply the filter filter.OverlayImage = backgroundImage; Bitmap resultImage = filter.Apply( sourceImage );

Source image:

Background image:

Result image:

Inheritance: AForge.Imaging.Filters.BaseFilter2

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

Public Methods

Method	Description
ThresholdedDifference ( ) : System	Initializes a new instance of the ThresholdedDifference class.
ThresholdedDifference ( int threshold ) : System	Initializes a new instance of the ThresholdedDifference class.

Protected Methods

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

Method Details

ProcessFilter() protected method

Process the filter on the specified image.

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

ThresholdedDifference() public method

Initializes a new instance of the ThresholdedDifference class.

public ThresholdedDifference ( ) : System
return	System

ThresholdedDifference() public method

Initializes a new instance of the ThresholdedDifference class.

public ThresholdedDifference ( int threshold ) : System
threshold	int	Difference threshold (see ).
return	System