Blobs filtering by size.

Namespace:  AForge.Imaging.Filters
Assembly:  AForge.Imaging (in AForge.Imaging.dll) Version: (


public class BlobsFiltering : BaseInPlaceFilter


The filter performs filtering of blobs by their size in the specified source image - all blobs, which are smaller or bigger then specified limits, are removed from the image.

Note:The image processing filter treats all none black pixels as objects' pixels and all black pixel as background.

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

Sample usage:

// create filter
BlobsFiltering filter = new BlobsFiltering( );
// configure filter
filter.CoupledSizeFiltering = true;
filter.MinWidth  = 70;
filter.MinHeight = 70;
// apply the filter
filter.ApplyInPlace( image );

Initial image:

Result image:

Inheritance Hierarchy


See Also