A global optimization framework for optical character recognition (OCR) of low-resolution photographed documents that combines a binarization-type process, segmentation, and recognition into a single process. The framework includes a machine learning approach trained on a large amount of data. A convolutional...http://www.google.com/patents/US7499588?utm_source=gb-gplus-sharePatent US7499588 - Low resolution OCR for camera acquired documents
