Kimmo Fredriksson, Gonzalo Navarro, Esko Ukkonen. Optimal Exact and Fast Approximate Two Dimensional Pattern Matching Allowing Rotations. In Alberto Apostolico, Masayuki Takeda, editors, Combinatorial Pattern Matching, 13th Annual Symposium, CPM 2002, Fukuoka, Japan, July 3-5, 2002, Proceedings. Volume 2373 of Lecture Notes in Computer Science, pages 235-248, Springer, 2002. [doi]
Abstract is missing.