A Method for 2D Bar Code Recognition by Using Rectangle Features to Allocate Vertexes. - Yan Heping; Zhiyan Wang; Sen Guo (GREC, 2005)

String Extraction Based on Statistical Analysis Method in Color Space. - Yan Heping; Zhiyan Wang; Sen Guo (GREC, 2005)

An Evaluation System for String Extraction in the Airline Coupon Project. - Yan Heping; Zhiyan Wang; Sen Guo (ICDAR, 2005)