The Multimodal Signature Method: An Efficiency and Sensitivity Study

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 (0.28 seconds per match). 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.

• Type: Conference
• Year: 2000
• Where: ICPR
• Authors: Dimitri Koubaroulis, Jiri Matas, Josef Kittler
• Keywords: Colour Object Recognition, Computer Vision, ICPR 2000, Multimodal Colour Density, Multimodal Neighbourhood Signature