Regularized edge detection. Katsaggelos, A. & Sullivan, B. In ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, pages 1048–1051, 1988. IEEE.
Regularized edge detection [link]Paper  doi  abstract   bibtex   
The authors concentrate on regularizing the differentiation operation and incorporating it in an edge-detection scheme. They describe a method for differentiation that addresses its susceptibility to noise, using the language of well-posed and ill-posed problems. Both a direct implementation of Miller regularization and one involving projections onto convex sets are considered. Examples are presented that indicate some directions for future efforts.
@inproceedings{Aggelos1988b,
abstract = {The authors concentrate on regularizing the differentiation operation and incorporating it in an edge-detection scheme. They describe a method for differentiation that addresses its susceptibility to noise, using the language of well-posed and ill-posed problems. Both a direct implementation of Miller regularization and one involving projections onto convex sets are considered. Examples are presented that indicate some directions for future efforts.},
author = {Katsaggelos, A.K. and Sullivan, B.J.},
booktitle = {ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing},
doi = {10.1109/ICASSP.1988.196773},
issn = {07367791},
pages = {1048--1051},
publisher = {IEEE},
title = {{Regularized edge detection}},
url = {http://ieeexplore.ieee.org/document/196773/},
year = {1988}
}

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