The Detection of 2D Image Features using Local Energy. 1996. Local Energy Feature Tracing in Digital Images and Volumes. 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. R. A. Owens.