Muscular layer's boundary detection from anal ultrasound image by active contour method. - Di Xiao; Wan Sing Ng; Udantha R. Abeyratne; Charles B. Tsang (ICARCV, 2002)

Rectal tumor boundary detection by unifying active contour model. - Di Xiao; Wan Sing Ng; Udantha R. Abeyratne; Charles Bih-Shiou Tsang (Image Processing, 2002)

Prototype of a rectal wall ultrasound image analysis system. - Di Xiao; Wan Sing Ng; Udantha R. Abeyratne; Charles Bih-Shiou Tsang (Image Processing, 2002)

Multigradient field-active contour model for multilayer boundary detection of ultrasound rectal wall image. - Di Xiao; Wan Sing Ng; Udantha R. Abeyratne; Charles B. Tsang (J. Electronic Imaging, 2005)

A region and gradient based active contour model and its application in boundary tracking on anal canal ultrasound images. - Di Xiao; Wan Sing Ng; Charles B. Tsang; Udantha R. Abeyratne (Pattern Recognit., 2007)