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Face shape matching method based on Shape Context

A matching method and algorithm technology, applied in the field of face recognition, can solve problems such as poor matching effect, and achieve good economical and scalable results

Inactive Publication Date: 2008-02-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the face shape matching of video intelligent monitoring, such traditional methods, after 2D deformation, the matching effect becomes very poor.

Method used

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  • Face shape matching method based on Shape Context
  • Face shape matching method based on Shape Context
  • Face shape matching method based on Shape Context

Examples

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Embodiment Construction

[0042] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0043] After considering execution efficiency and portability, the system is implemented using standard C++, and is implemented with the help of OpenCV (Intel(R) open source computer vision library). The face database used is UMIST (divided into 20 topics, a total of 564 images, each topic includes different face poses from side to front.)

[0044] Corresponding to the method in the present invention, a total of 6 tasks are de...

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Abstract

The invention relates to a kind of method to matching the shape of persons' faces based on Shape Context. At first, preprocessing with the image pyramid and diffusion-filtering technology; then abstracting the boundary-outline information; carrying on the logarithmic coordinate transformation of the abstracted boundary-outline information to get bar chart of the logarithmic coordinate; calculating the value of Cs to get all the phase match points; calculating the value of the degree of approximation to judge the shape matching. The invention is characterized in simplicity, accuracy, being economical, expandability and so on, so the person-face shape matching can be used for entrance-exit control, safe verification, safe-guard monitoring, searching criminals and so on.

Description

technical field [0001] The invention relates to face recognition technology, in particular to a face shape matching method based on Shape Context. Background technique [0002] Intelligent video surveillance is based on digital and networked video surveillance, but it is different from general networked video surveillance. It is a higher-end video surveillance application. Intelligent video monitoring is a monitoring method based on computer vision technology to analyze the video image content of the monitoring scene, extract key information in the scene, and form corresponding events and alarms. It is a new generation of monitoring system based on video content analysis. In the intelligent video surveillance system, the modeling of human body motion images is the first stage. Through the modeling of human body motion images, people can be extracted from the surveillance video, and the information of various characteristic parts of the human body can be obtained. Intelligen...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 夏小玲乐嘉锦王绍宇柴望甘泉
Owner DONGHUA UNIV
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