The class counts and extracts stand alone objects in images using connected components labeling algorithm.

Note:The algorithm treats all pixels with values less or equal to BackgroundThreshold as background, but pixels with higher values are treated as objects' pixels.

For blobs' searching the class supports 8 bpp indexed grayscale images and 24/32 bpp color images. See documentation about BlobCounterBase for information about which pixel formats are supported for extraction of blobs.

Sample usage:

CopyC#

// create an instance of blob counter algorithm
BlobCounter bc = new BlobCounter( );
// process binary image
bc.ProcessImage( image );
Rectangle[] rects = bc.GetObjectsRectangles( );
// process blobs
foreach ( Rectangle rect in rects )
{
    // ...
}