A method for image feature extraction

An image feature extraction and image technology, applied in the field of image processing, can solve the problems of real-time performance that cannot meet the requirements of large-scale databases, difficulty in obtaining high-quality, fine-grained segmentation results, etc., to improve recognition effects, compress storage space, and image segmentation precise effect

Inactive Publication Date: 2019-03-29
JIANGSU HUAXIA INTPROP SERVICE CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to improve and optimize the traditional method for the problem that it is difficult to obtain high-quality and refined segmentation results by traditional image segmentation methods, and the real-time performance cannot meet the requirements of large-scale databases, and propose a new image segmentation method. feature extraction method

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  • A method for image feature extraction

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Embodiment 1

[0023] Such as figure 1 As shown, it is a flow chart of an image feature extraction method in Embodiment 1 of the present invention, and the method includes:

[0024] Perform background modeling on the image to extract the foreground image of the image;

[0025] Perform color normalization processing on the foreground image;

[0026] Using a segmentation algorithm to segment the normalized image into multiple blob sub-regions;

[0027] Extract the color and position features corresponding to each blob sub-region.

[0028] In the embodiment of the present invention, cameras at different points extract video signals in real time, transmit them to the feature extraction server, and continuously extract color features;

[0029] When the feature extraction server receives each frame of video image, it establishes and updates the background model, extracts the foreground object at the same time, and then performs color normalization processing on the obtained foreground image, an...

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Abstract

The invention discloses a method for image feature extraction in that field of image process technology. The traditional color image segmentation method is difficult to obtain high-quality and fine segmentation results, and the real-time property cannot meet the requirements of large-scale database. The method comprises the following steps: an image feature extraction method is characterized in that: background modeling is carried out on the image, so as to extract the foreground image of the image; color normalization of foreground map; The normalized image is segmented into several blob sub-regions by using segmentation algorithm; color and position features corresponding to each blob sub-region are extracted. The invention can accurately and effectively carry out target image recognition, and has high real-time performance. As not specifically describe, that images refer to in the present invention are all color images.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image feature extraction method. Background technique [0002] With the rapid development of multimedia technology, video data is becoming larger and larger. How to analyze, search and identify these massive video data has become an important challenge in related research fields, especially in the fields of intelligent monitoring and digital security. Hotspots and Difficulties. In order to identify and track the target object in the image, it is usually necessary to extract the image features of the target for comparison. As a highly robust visual feature, color features are more dependent on factors such as the size, direction, and viewing angle of the object itself. Small and therefore widely used. [0003] There are many ways to extract color features, such as image segmentation, which divides the image into several different color regions, and then stores the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06T7/194G06T7/187G06T7/90
CPCG06T7/11G06T7/187G06T7/194G06T7/90G06T2207/10024G06T2207/20021G06T2207/20221
Inventor 张莹
Owner JIANGSU HUAXIA INTPROP SERVICE CO LTD
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