A summary of a captured document image is produced on the basis of detected handwritten annotations made to a document prior to image capture. The scanned (or otherwise captured) image is processed to detect annotations made to the document prior to scanning. The detected annotations can be used to identify...http://www.google.com.tw/patents/US7712028?utm_source=gb-gplus-share專利 US7712028 - Using annotations for summarizing a document image and itemizing the summary based on similar annotations
