Automobile morphology grating field projection initiative vision measurement system

A technology of grating projection and active vision, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of inability to adapt to the detection cycle of the detection line, time-consuming, low measurement accuracy, etc., to improve detection accuracy and detection efficiency, mechanical The effect of less processing steps and avoiding heavy labor

Inactive Publication Date: 2013-07-10
JILIN UNIV
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AI Technical Summary

Problems solved by technology

At present, the measurement of vehicle size is mainly based on manual meter measurement, which has low efficiency, poor accuracy, and high labor intensity for the staff.
The method of collecting vehicle images and then measuring the size of the vehicle solves the above technical bottlenecks. However, due to the complex shape and large size of the commercial vehicle, the algorithm for extracting the vehicle from the vehicle image collected by the camera is complex, the measurement accuracy is low, and it takes a long time. It cannot adapt to the detection cycle of the detection line, so the design of the active visual measurement system of the automotive shape grating field projection is of great significance to the technological progress of the automotive industry detection field

Method used

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  • Automobile morphology grating field projection initiative vision measurement system
  • Automobile morphology grating field projection initiative vision measurement system
  • Automobile morphology grating field projection initiative vision measurement system

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0024] Aiming at the present situation that the automatic measurement of the shape of the automobile body cannot be realized at present, the present invention provides a grating field that can project periodic changes from the roof to the body along the length direction of the operating vehicle, and project the changes of the collected grating field to the body. Analyze and reconstruct the shape information of the car body, and realize a car with high measurement accuracy, fast measurement, easy installation, strong versatility, and reliable performance that can meet the requirements of national metrology, quality supervision departments and manufacturers for vehicle shape collection Topography Grating Field Projection Active Vision Measurement System.

[0025] The invention uses four projectors to project the periodic grating field onto the surface of the vehicl...

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Abstract

The invention discloses an automobile morphology grating field projection initiative vision measurement system and aims at solving the problem that road surface crack image collection and road surface condition evaluation can not be achieved. The automobile morphology grating field projection initiative vision measurement system comprises a front grating projection system (A1), a right grating projection system (A2), a left grating projection system (A3), a back grating projection system (A4), a front-right image collection system (B1), a front-left image collection system (B2), a back-right image collection system (B3) and a back-left image collection system (B4). According to the automobile morphology grating field projection initiative vision measurement system, automobile morphology can be automatically reconstructed by machine vision through grating field projection construction feature points.

Description

technical field [0001] The invention relates to a detection device in the field of automobile industry, more specifically, it relates to an active vision measurement system for the field projection of automobile shape grating. Background technique [0002] In order to ensure the safe driving of automobiles, the measurement of automobile body length is one of the main inspection items in the field of automobile inspection. At present, the measurement of vehicle size is mainly based on manual meter measurement, which has low efficiency, poor accuracy, and high labor intensity for staff. The method of collecting vehicle images and then measuring the size of the vehicle solves the above technical bottlenecks. However, due to the complex shape and large size of the commercial vehicle, the algorithm for extracting the vehicle from the vehicle image collected by the camera is complex, the measurement accuracy is low, and it takes a long time. It cannot adapt to the detection cycle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
Inventor 徐观苏建李晓韬卢雪张立斌陈熔潘洪达戴建国林慧英刘玉梅孙丽娜宋健曹晓宁张益瑞郝照冰刘换平
Owner JILIN UNIV
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