Color image color feature extraction method and device thereof

A technology of color features and extraction methods, which is applied in the field of image processing, can solve the problems that real-time performance cannot meet the requirements of large-scale databases, it is difficult to obtain high-quality, fine-grained segmentation results, etc., to improve recognition effects, compress storage space, and improve real-time performance effect

Inactive Publication Date: 2012-09-12
上海博康智能信息技术有限公司
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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 tr

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  • Color image color feature extraction method and device thereof
  • Color image color feature extraction method and device thereof
  • Color image color feature extraction method and device thereof

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Embodiment 1

[0043] Such as figure 1 As shown, it is a flow chart of an image color feature extraction method in Embodiment 1 of the present invention, and the method includes:

[0044] S101. When a video image is received, a background model is established, and a foreground image of the video image is extracted;

[0045] S102. Perform color normalization processing on the obtained foreground image, obtain the normalized image and use it as an object of image data segmentation;

[0046] S103. According to the measure of the dissimilarity of the color features between the pixels, use an image segmentation algorithm to cluster each pixel of the image, divide the image into blob sub-regions, and extract the corresponding color and position features of each sub-region, Wherein, the color difference within the sub-regions is small, and the color difference between the sub-regions is large.

[0047] In the embodiment of the present invention, cameras at different points collect video signals i...

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Abstract

The invention discloses a color image color feature extraction method and a device thereof used in the field of image processing technology. According to a traditional color image segmentation method, a high-quality refined segmentation result is difficult to obtain, and real-time performance can not meet a requirement of a large-scale database. The method of the invention comprises the following steps of: establishing a background model when receiving a video image, and extracting a foreground image of the video image; carrying out image normalization processing on the obtained foreground image, and obtaining a normalized image which is taken as an object of image data segmentation; according to dissimilarity measurement of color characteristics between pixel points, utilizing an image segmentation algorithm to carry out clustering on each pixel point of the image, dividing the image into pieces of blobs, and extracting color and position characteristics corresponding to each blob, wherein a color difference in the blob is small and a color difference between the blobs is large. According to the method and the device, target image recognition can be carried out accurately and efficiently with high real-time performance. If not specified, the image referred in the invention is a color image.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for extracting color features of a color image. 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...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06T7/00G06K9/62
Inventor 王运节虞正华张如高张安发
Owner 上海博康智能信息技术有限公司
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