Trademark image retrieval method

Abstract

The invention relates to a trademark image retrieval method which includes: performing color and local feature extraction on sample trademark images; categorizing the sample trademark images according to grey level frequency; performing foreground and background segmentation; determining the edge criteria according to foreground and background pixel gray level statistical values; extracting edge features according to the edge criteria; judging the complexity of the sample trademark images according to the edge features so as to divide the sample trademark images into at least one group; using the same steps to extract the color features, edge features and local features of a to-be-retrieved trademark image; judging the complexity of the to-be-retrieved trademark image according to the edge features of the to-be-retrieved trademark image to determine the group which the to-be-retrieved trademark image belongs to; performing similarity retrieval in the group which the to-be-retrieved trademark image belongs to by synthesizing the color and edge features of the to-be-retrieved trademark image; performing similarity retrieval in other groups when the fact that the to-be-retrieved image is not similar to each sample trademark image in the group which the to-be-retrieved trademark image belongs to is determined; performing similarity retrieval according to the local features of the to-be-retrieved trademark image when retrieval needs to be performed again.

Description

technical field [0001] The invention relates to image retrieval technology, in particular to a trademark image retrieval method. Background technique [0002] A trademark is a symbol of a company, product or service, and is integrated with the product quality, service quality, and management of the company. It plays a very important role in the industrial and commercial society. It is an important attribute of the company and its products and is unique. In order for a trademark to be legally protected, it must be formally registered with the Trademark Office. With the development of my country's economy and the acceleration of globalization, the number of trademarks is increasing year by year. Preventing duplicate registration or registration of similar trademarks is the core issue of trademark management. In order to protect the legitimate rights and interests of registered trademarks and crack down on illegal acts of counterfeiting and misappropriation of registered trad...

AI Technical Summary

Problems solved by technology

The current trademark recognition and retrieval methods are mainly aimed at high-quality trademark images with relatively simple backgrounds. The recognition of trademark images with complex image backgrounds has certain limitations, and the recognition rate is low.

Especially in the process of image edge extraction, it is often impossible to guarantee accurate image edge extraction

Images