Bi-directional gradient labeling and registration for gray-scale image segmentation. - Lei Ma 002; Xiao-Ping (Steven) Zhang; Jennie Si; Glen P. Abousleman (ICIP (1), 2003)

Bidirectional labeling and registration scheme for grayscale image segmentation. - Lei Ma 002; Xiao-Ping (Steven) Zhang; Jennie Si; Glen P. Abousleman (IEEE Trans. Image Process., 2005)