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Comments on ''A Three-Module Strategy for Edge Detection'' (with reply)
February 1990 (vol. 12 no. 2)
pp. 223-224

Comments are made on the above named work by V. Lacroix. The commenters contend that the proposed orthogonal bases are the same as the edge subspace bases in the approach of W. Frei and C.C. Chen and that the ratio for detecting edges is the same as that proposed by Frei and Chen for special cases. In his reply, Lacroix explains the relationship between his method and that of Frei and Chen.

[1] W. Frei and C. C. Chen, "Fast boundary detection: A generation and a new algorithm,"IEEE Trans. Comput., vol. C-26, no. 10, pp. 988- 998, Oct. 1977.
[2] R. C. Gonzalez and P. Wintz,Digital Image Processing. Reading, MA: Addison-Wesley, 1977, pp. 333-344.

Index Terms:
picture processing; pattern recognition; three-module strategy; edge detection; edge subspace; pattern recognition; picture processing
R.H. Park, W.Y. Choi, "Comments on ''A Three-Module Strategy for Edge Detection'' (with reply)," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 12, no. 2, pp. 223-224, Feb. 1990, doi:10.1109/34.44409
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