%
% o image: the image.
%
-% o channel: the channel type.
-%
% o radius: the radius of the gaussian smoothing filter.
%
% o sigma: the sigma of the gaussian smoothing filter.
* Montage: juxtapose image thumbnails on an image canvas.
* Generalized pixel distortion: correct for, or induce image distortions
including perspective.
+ * Computer vision: Canny edge detection.
* Morphology of shapes: extract features, describe shapes and recognize
patterns in images.
* Motion picture support: read and write the common image formats used in