1. J. F. Canny. A Computational Approach to Edge Detection. IEEE Trans. Pattern Analysis Machine Intell., 6:679–698, 1986.
2. J. Knapinan and W. Dickson. Hierarchical Probabilistic Image Segmentation. Image and Vision Computing (submitted), 1993.
3. G. J. Brelstaff, M. C. Ibison, and P. J. Elliott. Edge-Region Integration for Segmentation of MR Images. In Proc. British Machine Vision Conference, pages 139–144, Oxford, England, September 1990.