Document image template matching based on component block list

摘要

Document image matching is the key technique for document image registration and retrieval. In this paper, a new matching method based on document component block list (CBL) is proposed. A document image is firstly parsed into a number of component blocks that arc defined as non-adherent rectangular areas of substantial document contents. Then these blocks are organized as a list, on which several matching operations are defined. The template image that is most similar to the querying document image is selected as the matching result. Our method can effectively make use of the local information of each page component block and the global information of document page layout. We in- vestigate the method with large-scale document template image database. Our method manifests good matching ac- curacy and good robustness to image distortion, filled-in text, and noises.