Detecting clouds and cloud shadows on aerial photographs. - Chengye Wang; Liuqing Huang; Azriel Rosenfeld (Pattern Recognit. Lett., 1991)

The geometry of visual interception. - Liuqing Huang; Yiannis Aloimonos (CVPR, 1992)

How normal flow constrains relative depth for an active observer. - Liuqing Huang; Yiannis Aloimonos (Image Vis. Comput., 1994)