A Method of Improving the Judgment Accuracy of Similarity of Trademark Graphics

A graphic similarity and accuracy technology, applied in the direction of instruments, calculations, characters and pattern recognition, etc., can solve the problems of low accuracy without further development and improvement, and achieve practical functions, improved accuracy, and novel methods Effect

Active Publication Date: 2022-04-29
南昌奇眸科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now people study how to use computers and other electronic devices to search and match trademarks has become a hot issue in this field. People continue to try various computer algorithms and multimedia technologies to automatically retrieve trademark graphics. In the link of feature extraction and comparison A lot of experiments and improvements have been done, but in the output of the results, it is often simply to judge whether they are similar or to output according to the comparison results, without further research and development and improvement, resulting in low accuracy

Method used

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  • A Method of Improving the Judgment Accuracy of Similarity of Trademark Graphics
  • A Method of Improving the Judgment Accuracy of Similarity of Trademark Graphics
  • A Method of Improving the Judgment Accuracy of Similarity of Trademark Graphics

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Embodiment 1

[0036] as attached figure 1 As shown, a method for improving the accuracy of trademark graphic similarity determination in this embodiment includes:

[0037] S101, sort the result pictures of the trademark similarity search according to the similarity with the trademark to be checked from high to low, and obtain the initial result picture sequence {S 0}=[I 01 ,I 02 ,...,I 0k ,...];

[0038] S102, take the first k pictures of the primary result picture sequence in S101 as new trademarks to be checked respectively, and then perform m times of similarity sorting, where m and k are both integers greater than or equal to 1, and obtain the secondary result picture sequence {S m}=[I m1 , I m2 ,..., I mk ,...];

[0039] S103, obtain the comprehensive result picture set S={S through the primary result picture sequence in S101 and the secondary result picture sequence in S102 0 ∪S 1 ∪…∪S m ∪…}={s t};

[0040] S104, taking the same picture in the integrated result picture se...

Embodiment 2

[0044] The difference between this embodiment 2 and embodiment 1 is that the obtaining of the first result picture sequence includes the following four steps:

[0045] S201, establishing a trademark graphic database;

[0046] S202, extracting features of the trademarks to be checked and the trademarks in the trademark graph database;

[0047] S203, comparing the similarity between the features extracted in S202 and the features extracted in the trademark graphic database;

[0048] S204. Sort the comparison results in S203 in descending order of similarity.

[0049] In this embodiment, the similarity of feature extraction in the step S202 is based on existing corner detection, LSD (local statistical distribution feature) and GSD (GLobal Statistical Distribution, global statistical distribution feature); the steps The similarity comparison in S203 is also realized by using the existing corner point matching method corresponding to the feature extraction; after the corner point m...

Embodiment 3

[0051] On the basis of Embodiment 2, this embodiment 3 is also provided with a step S301 of preprocessing the graphics of the trademark to be checked and the trademark in the trademark graphics database before the feature extraction in step S202; There are steps such as translation, stretching, compression, enlargement, reduction, segmentation, and rotation; after the feature matching, there is also a step S302 of eliminating incorrectly matched pairs; the step S302 uses a RANSAC algorithm to eliminate incorrectly matched pairs.

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Abstract

The invention discloses a method for improving the accuracy of judging the similarity of trademark graphics, which can carry out secondary or even multiple retrievals on the primary sorting results generated by any method of trademarks, and then perform final sorting according to the set generated by the final retrieval. The method combines The sorting results of multiple retrievals of related images, images with more occurrences have higher weights, and images with higher rankings have higher weights, which fully exploits the correlation between images and greatly improves the similarity of trademark graphics The accuracy of the judgment; at the same time, in order to further improve the accuracy, it also provides a more stable and accurate extraction and comparison method for the initial ranking results, which provides a good foundation for subsequent secondary or even multiple retrievals.

Description

technical field [0001] The invention belongs to the technical field of trademark retrieval, and in particular relates to a method for improving the accuracy of judging the similarity of trademark graphics. Background technique [0002] Trademarks are an indispensable factor in the commercial economy. The annual number of trademark applications reaches one million levels, and the trademark data reaches tens of millions. For such a large number of groups, if people judge or examine whether two trademarks are similar and how similar they are When it comes to judgment, it is all judged by human eyes and subjective consciousness. There is a lot of room for improvement and improvement in terms of the operation cycle and the objective stability of the results. [0003] Now people study how to use computers and other electronic devices to search and match trademarks has become a hot issue in this field. People continue to try various computer algorithms and multimedia technologies t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/50G06V10/75G06K9/62
CPCG06V10/507G06V10/754
Inventor 樊晓东李建圃
Owner 南昌奇眸科技有限公司
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