Nature , Vol 324, No 6094, 250-253, November 1986. M. C. Morrone and R. A. Owens. Feature detection from local energy. Pattern Recognition Letters 6, 303-313, 1987. R. A. Owens, S. Venkatesh, and J. Ross.
Edge detection is a projection.
Pattern Recognition Letters 9, March 1989, 233-244. Svetha Venkatesh and Robyn Owens. On the classification of image features. Pattern Recognition Letters 11, May 1990, 339-349. S. Daly, J. Kent, Du Huynh, R. Owens, B. Alexander, K. Ng and P. Hartmann.