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Image local feature description method, device and equipment and medium

A technology of local features and local descriptors, applied in the field of image local feature description methods, equipment and media, and devices, can solve problems such as unfavorable image matching, classification and retrieval, and achieve the effect of good resistance

Inactive Publication Date: 2019-07-09
CHINA MOBILE GROUP ANHUI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned descriptor vector method is not conducive to real-time image matching, classification and retrieval due to the characteristics of affine invariance, rotation invariance and high latitude characteristics.

Method used

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  • Image local feature description method, device and equipment and medium
  • Image local feature description method, device and equipment and medium
  • Image local feature description method, device and equipment and medium

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Embodiment Construction

[0025] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and ...

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Abstract

The embodiment of the invention discloses an image local feature description method and device, equipment and a medium, and the method comprises the steps: dividing a local feature region in an imageinto a plurality of gray sub-intervals according to the gray value of a pixel point, and enabling the gray value of the pixel point in each gray sub-interval to be within a preset gray value range; obtaining gray value gradient information of each gray subinterval; and forming a local descriptor of the local feature region based on the gray value gradient information of each gray subinterval. Through the technical scheme provided by the embodiment of the invention, the robustness and distinguishability of image local feature description can be improved, and the dimension of the feature vectoris reduced.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to an image local feature description method, device, equipment and medium. Background technique [0002] Image local features are widely used in video signal transmission, image matching and retrieval, robot navigation, target recognition and other fields. The image local feature description method is to divide the image into some independent local areas, which reflect the essential features of the image, and then use mathematical methods to form unique local feature descriptors (local feature descriptor vectors) for each local area. . Usually need to have two characteristics, one is invariance, that is, it can resist attacks caused by changes in perspective, illumination, rotation, occlusion, noise, scale, etc., and the other is distinguishability, that is, the local features of different images should be as different as possible. big. [0003] The existing image loca...

Claims

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Application Information

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IPC IPC(8): G06K9/46
CPCG06T7/11G06T7/155G06V10/462
Inventor 蒋飞云
Owner CHINA MOBILE GROUP ANHUI