Compatible and accurate calibration method for double eye line structure photo-sensor and implementing apparatus

A line-structured light and calibration method technology, applied in the direction of optical devices, measuring devices, instruments, etc., can solve problems such as difficult to reach, difficult to extract pixel coordinates of feature points, complex target shape, etc., to achieve accurate calibration effect
CN1595054AInactive Publication Date: 2005-03-16TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2005-03-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to laser high-accuracy three-dimensional coordinate measurement, which in detail relates to a binocular structure photo-sensor compatibility calibration and its operation apparatus. In order to calibrate the photo plane parameters of the binocular structure photo-sensor, it unites the space coordinates measured of the left and right cameras. The technique project adopted in this invention is the following: the operation apparatus comprises left and right cameras, laser machine, and target and also movable guide rail with the target fixed on; the target plane is vertical to the moving direction of the guide rail which ensures the plane is vertical to the project laser plane. Besides, it is to identify the axis coordinates in the space coordinate system of the cross points of the each lines and photo bars in the target and brings the coordinates to the photo-sensor mathematical model for computation and get sensor parameters.
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Description

technical field

[0001] The invention relates to laser high-precision three-dimensional coordinate measurement, and in particular relates to a consistent and precise calibration method of a binocular line structured light sensor and an implementation device thereof. Background technique

[0002] Line-structure laser vision measurement technology is a high-precision three-dimensional coordinate measurement method. The line-structure laser is projected on the surface to be measured to generate a light strip. The camera captures the light strip image and extracts the pixel coordinates distributed on the light strip image (u i , v i ), and then deduce the spatial three-dimensional coordinate data of the corresponding point on the light bar through a certain transformation.

[0003] The line structure laser sensor measurement model includes many transformation parameters, one of which defines the transformation relationship between the sensor’s spatial measurement coordinate syst...

Claims

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