Content-based trademark retrieval system using a new region based shape description method: the distance-angle pair-wise histogram

Due to the increasing number of registered trademarks, it is more and more difficult to design and register a new trademark without a good retrieval method Thus, we propose a new region based shape description method: the distance-angle pair wise histogram, as the trademark shape feature vector to retrieve similar trademarks Experiments have been conducted on about 1000 trademark images. Some moment-based methods have also been implemented. In general the proposed method performs better than other moment-based methods.