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Trademark Image Retrieval Method

An image retrieval and trademark technology, applied in still image data retrieval, still image data query, special data processing applications, etc., can solve the problems of unable to guarantee the extraction of image edges and low recognition rate, so as to ensure the effect of edge detection and improve recognition Accuracy and shortening of retrieval time

Active Publication Date: 2019-03-19
BEIJING CIPRUN MOBILE INTERNET TECH
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  • Description
  • Claims
  • Application Information

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

Method used

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  • Trademark Image Retrieval Method
  • Trademark Image Retrieval Method
  • Trademark Image Retrieval Method

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Embodiment Construction

[0015] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0016] The invention provides a trademark image retrieval method, such as figure 1 As shown, the method includes the following steps: obtaining a sample trademark image; after performing grayscale, normalization and filtering processing on the sample trademark image, performing color feature extraction and local feature extraction; calculating the grayscale frequency in the sample trademark image, And classify the sample trademark image according to the calculated grayscale frequency; determine the segmentation threshold according to the classification result to segment the foreground and background in the sample trademark image; calculate the pixel grayscale st...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/53
CPCG06F16/5838
Inventor 孔军民
Owner BEIJING CIPRUN MOBILE INTERNET TECH
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