Yuen-Hsien Tseng, Automatic Key Feature Extraction from Digital Documents, ROC Patent No: 153789, Effective from April 11, 2002 to January 14, 2020.
Yuen-Hsien Tseng, Automatic Key Feature Extraction from Digital Documents, ROC Patent No: 153789, Effective from April 11, 2002 to January 14, 2020.
曾元显,数位文件关键特徵之自动撷取方法,中华民国发明专利第153789号.