The Multimodal Signature Method: An Efficiency and Sensitivity Study

Koubaroulis, D.; Matas, J.; Kittler, J.

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příspěvek z konference - tištěný

Author

Koubaroulis, D.

Matas, J.

Kittler, J.

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© 2000 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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Abstract

The multimodal neighbourhood signature (MNS) method has given acceptable results both for the colour-based image retrieval and the object recognition task. Local colour content is concisely represented by invariant features computed from neighbourhoods with multimodal colour density function. In this paper, efficiency related issues regarding the MNS algorithm are investigated. Its performance, speed, sensitivity to internal parameters and storage requirements are tested on a standard colour object recognition experiment. Very good recognition rate (99.9%) was achieved in real time. The MNS signature size is a few hundred bytes on average, an important property for retrieval from large databases. The algorithmic complexity of signature computation and matching are analysed and efficient implementations are proposed.

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