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A unifying approach to iconic indexing for 2-D and 3-D scenes

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3 Author(s)
Costagliola, G. ; Dipartimento di Inf. ed Applicazioni, Salerno Univ., Italy ; Tortora, G. ; Arndt, T.

Several iconic indexes for representing three-dimensional scenes are presented. The approach extends previous work in iconic indexing of two-dimensional scenes in a unified manner. Good characteristics for iconic indexes are also pointed out. OPP2 and OPP3, two-dimensional iconic indexes for three-dimensional scenes, are introduced. The problem of ambiguity in the OPP2 and OPP3 representations of three-dimensional scenes is studied in detail and a class of images for which they are unambiguous is identified. The Genstring, a linear iconic index which can be used to represent two-, three-, or higher-dimensional scenes, is introduced. It provides a compact, unambiguous representation of a three-dimensional scene. The Genstring takes advantage of previous work, thus providing fast pattern matching for higher-dimensional scenes. In fact, the pattern matching algorithm given for k-dimensional scenes is as fast as that previously given for two-dimensional scenes

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:4 ,  Issue: 3 )