Leptonica is open source software that is broadly useful for image processing
and image analysis applications.

Featured operations are:
* Rasterop (a.k.a. bitblt)
* Affine transformations (scaling, translation, rotation, shear) on images
of arbitrary pixel depth
* Binary and gray-scale morphology, rank order, and convolution
* Seedfill and connected components
* Image transformations combining changes in scale and pixel depth
* Pixelwise masking, blending, enhancement, arithmetic ops, etc.