http://www.leptonica.com/Leptonica is a pedagogically-oriented open source library containing software that is broadly useful for image processing and image analysis applications. The official distribution, including all releases, is on GitHub: github.com/danbloomberg/leptonica. Featured operations are Rasterop (a.k.a. bitblt) Affine transformations (scaling, translation, rotation, shear) on images of arbitrary pixel dept
