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Method for eliminating shadow points in video image

A video image and shadow technology, applied in image enhancement, image data processing, instruments, etc., can solve the problems of affecting people counting and inaccurate people counting results

Inactive Publication Date: 2014-08-20
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned people counting technology solves the problem of counting the number of people to a certain extent, in practical applications, due to the shadow of people, it seriously affects the counting of the number of people, making the result of the counting of people inaccurate

Method used

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  • Method for eliminating shadow points in video image
  • Method for eliminating shadow points in video image
  • Method for eliminating shadow points in video image

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Embodiment Construction

[0018] The method for eliminating shadow points in a video image provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] In order to enable examiners to further understand the structure, features and other purposes of the present invention, the attached preferred embodiments are now described in detail as follows. The described preferred embodiments are only used to illustrate the technical solutions of the present invention, not to limit the present invention .

[0020] figure 1 A flow chart of the method for eliminating shadow points provided by the present invention. Such as figure 1 As shown, the method for eliminating shadow points provided by the invention includes the following steps performed in order:

[0021] First step 101, using the Harris algorithm to obtain corner points in the detection area;

[0022] The second step 102 is to obtain the sampling features of the area...

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Abstract

The invention relates to a method for eliminating shadow points in a video image. The method sequentially includes the following steps: obtaining angular points in a detection area with a Harris algorithm, obtaining sampling characteristics of surrounded areas of the angular points, and judging whether the angular points are shadow points or not according to the sampling characteristics to remove the shadow points. By means of the method for eliminating the shadow points in the video image, the problem that people counting is not accurate due to the fact that people counting is seriously influenced by shadows of people in practical application is solved.

Description

technical field [0001] The invention belongs to the technical field of image processing and video monitoring, in particular to a method for eliminating shadow points in video images. Background technique [0002] In order to ensure the stability of social security and the stability of people's lives, video surveillance devices have been installed in various large and medium-sized cities in my country. These video surveillance devices need to have different detection functions according to the application places. Among them, in important public places such as stations, airports, supermarkets, commercial blocks, sports fields, etc., it is very important to count the number of people. [0003] So far, some people counting methods have been made public at home and abroad. For example, the Chinese patent application with publication number CN101431664A introduces a method and system for automatic detection of passenger flow density based on video images, and the US patent appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 李富明黄国栋周建朋孙家新王开均
Owner STATE GRID CORP OF CHINA