.Location algorithm for seal imprints on Chinese bank-checks based on region growing[J].Optoelectronics Letters,2006,2(2):155-157 Location algorithm for seal imprints on Chinese bank-checks based on region growing CHEN Li-jiang LIU Tie-gen CHEN Jia-Jia ZHU Jun-chao DENG Ji-Jie MA She-xiang [1]College of Precision Instrument and Opto-electronics Engineering, The Key Laboratory of Opto-electronic Information Science and Technology of Ministry of Education, Tianjin University, Tianjin 300072,China [2]College of Photoelectronics Information and Electronic Engineering, Tianjin University of Technology, Tianjin 300191, China Abstract:       The paper focuses on location of seal imprints on Chinese bank-checks based on region growing. Region growing method can be applied to searching and locating connection region in an image. A seal imprint,however, is generally composed of various connection regions which are unconnected to each other. In order to locate the seal imprint,these connection regions must be fused together. In the paper, an algorithm for locating seal imprints on Chinese bankchecks based on region growing is proposed, of which a fusion criterion for connection regions in a seal imprint is put forth based on the image feature of Chinese bankcheck,and a center-rays model is proposed to find the topological relationship between connection regions,for which externally-tangent rectangle of region is used as the mark of location of region. The location experiment is achieved with a false-acceptance rate of 7.1% and a false-rejection rate of 0 % on Chinese bankcheck. Hits: 3919 Download times: 162 View Full Text    Download reader