Affine-Invariant Sketch-Based Retrieval of Images. - Horace Ho-Shing Ip; Angus K. Y. Cheng; William Y. F. Wong; Jun Feng 003 (Computer Graphics International, 2001)

Concealment of damaged blocks by neighborhood regions partitioned matching. - William Y. F. Wong; Angus K. Y. Cheng; Horace Ho-Shing Ip (ICIP (2), 2001)

Affine Invariant Retrieval of Shapes Based on Hand-Drawn Sketches. - Horace Ho-Shing Ip; Angus K. Y. Cheng; William Y. F. Wong (ICPR (2), 2002)