COMMENTS ON ‘‘MESH AND PYRAMID ALGORITHMS FOR ICONIC INDEXING’’: AUTHORS ’ REPLY Dear Ms. Mossman,

Chang (referred to by ‘‘authors’ ’ for the rest of this note) about our paper ‘‘Mesh and Pyramid Algorithms for Iconic indexing’’. We would like to begin by thanking the authors for pointing out several inadverdent errors. However, we do not agree with several comments. These are described briefly as follows: 1. Our definition of the different types of matching were derived from references 4, 6 * and elaborated in Section 4. Reference 6 was omitted inadvertently in the introduction and in Section 4. Most of our work was done during the 1989—1990 academic year. At that time we only had the manuscript version of Ref. [1] available to us. As noted in our paper, we only presented a restricted form of type-2 matching