Trademark image retrieval method based on color features and shape contexts

Abstract

The invention provides a trademark image retrieval method based on color features and shape contexts. The trademark image retrieval method comprises the steps as follows: acquiring the to-be-detected trademark images from a trademark image retrieval system for constructing content based image retrieval CBIR; carrying out preprocessing on RGB (Red, Green and Blue) color trademark images, including graying, normalizing and filtering treatment of the trademark images; quantizing the color features of the preprocessed trademark images, and extracting a color histogram; extracting shape features of the trademark images; dynamically adjusting weight coefficients of the color features and the shape features in similarities of the trademark images; and carrying out trademark retrieval in combination with the color and shape features to obtain the trademark retrieval images meeting the demand at last. Compared with the trademark image retrieval method based on single feature, the trademark image retrieval method based on the color features and the shape contexts has better effect, and the retrieval performance of the system is satisfactory. At the same time, the introduction of related feedback technologies also greatly improves the retrieval success rate, the image retrieval effect is better and the accuracy is higher.

Description

technical field [0001] The invention relates to a trademark image retrieval technology, in particular to a trademark image retrieval method based on color features and shape context Background technique [0002] Trademarks are used by producers and operators of commodities on the commodities they produce, manufacture, process, select or distribute, or by service providers on the services they provide, and are used to distinguish the source of commodities or services. , letters, numbers, three-dimensional marks, colors, or any combination of the above-mentioned elements constitute a sign with distinctive features. [0003] 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 counte...

AI Technical Summary

Problems solved by technology

Content-based trademark retrieval appeared late, and the system is not yet mature. Therefore, more intuitive and direct retrieval methods need to be further studied to achieve harmony between visual similarity and retrieval methods.

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