System and method for measuring height of human body in video image based on camera calibration

A technology of human height measurement and video image, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as large manpower and material resource consumption

Inactive Publication Date: 2017-02-01
THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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  • Abstract
  • Description
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Problems solved by technology

However, in monitoring applications such as traffic and public security, such methods require corresponding auxiliary equipment in the scene of the video image when personnel appear on the scene, which will bring a large consumption of manpower and material resources for practical applications.

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  • System and method for measuring height of human body in video image based on camera calibration
  • System and method for measuring height of human body in video image based on camera calibration

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Embodiment Construction

[0074] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0075] The system for measuring human body height in video images based on camera calibration includes:

[0076] The calibration point selection module is used to select the calibration point and determine the correspondence between the calibration point in the world coordinate system and the image coordinate system;

[0077] The camera parameter calculation module is used to calculate the transformation matrix according to the camera imaging principle, and calculate the internal and external parameters of the camera according to the transformation matrix;

[0078] The human body height measurement endpoint selection module is used to select the sole point and head apex of the person standing upright on the ground in the image on the image through the human-computer interaction interface, and record its cor...

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Abstract

The invention relates to a system for measuring the height of a human body in a video image based on camera calibration and further discloses a method for measuring the height of a human body in a video image based on camera calibration. The system comprises a calibration point selecting module, a camera parameter calculating module, a body height measuring end point selecting module and a human body height calculating module. By the adoption of the system and the method, the height of a person erectly standing on the ground can be measured only by relying on monitored video image data after camera parameters and corresponding space transformation matrixes of the parameters are calculated. The height calculating process is simplified. The camera parameters are calculated according to the correspondence relation of image space coordinates and actual space coordinates of the same position point. The height of the person erectly standing on the ground is calculated by combining with the camera parameters and foot bottom point and head top point measurement end point information and utilizing a height calculating algorithm.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to the technical field of video camera calibration and video image target measurement, and specifically refers to a system and method for measuring human body height in video images based on camera calibration. Background technique [0002] The target measurement methods of video images include perspective measurement method, on-site reproduction measurement method, space mapping method and picture matching method. Perspective drawing measurement is a method of measuring by drawing based on the principle of perspective. This method is simple to operate, but requires mastering the basic theory of perspective, and needs to accurately find the "vanishing point" according to the on-site reference objects. The scene reconstruction measurement method is a measurement method based on the reconstruction of the crime scene, which is adopted when the scene reconstruction is possible ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/107G06T7/80G06T7/70
CPCA61B5/1072A61B5/1075A61B5/1079G06T2207/30196
Inventor 王钧段慧仙王建梅林刘娜宋蕾
Owner THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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