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Method and system for calibrating camera parameters of one-dimensional area array camera set

A camera parameter, camera technology, applied in image data processing, instrumentation, calculation, etc., can solve the problem of not providing a more accurate camera parameter calibration method.

Active Publication Date: 2015-03-25
深圳市大族机器人有限公司
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Problems solved by technology

[0005] The prior art has not yet provided a more accurate camera parameter calibration method

Method used

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  • Method and system for calibrating camera parameters of one-dimensional area array camera set

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Embodiment Construction

[0025] An embodiment of the present invention provides a method for calibrating camera parameters of a one-dimensional area array camera group, including: using a camera to photograph the marking points on the calibration plate to obtain images of the marking points, and the one-dimensional area array camera group is carried on x motion platform; acquire the position coordinates of the marked point in the image; calculate the angle between the camera and the x-axis, the accuracy of the camera and the distance between two adjacent cameras according to the position coordinates of the marked point. Embodiments of the present invention also provide a corresponding system for calibrating camera parameters of a one-dimensional area array camera group. Each will be described in detail below.

[0026] The basic flow of the method for calibrating the camera parameters of the one-dimensional area array camera group in the embodiment of the present invention can be referred to figure 1 ...

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Abstract

The invention discloses a method and system for calibrating camera parameters of a one-dimensional area array camera set. By means of the method and system, the camera parameters needed when a device is assisted for conducting operation such as positioning, machining and detecting can be obtained. The method includes the steps that pictures are taken by cameras for mark points on a calibrating board to obtain pictures of the mark points, and an x motion platform bears the one-dimensional area array camera set; position coordinates of the mark points in the pictures are obtained; according to the position coordinates of the mark points, included angles theta between the cameras and the x axis, the accuracy p of the cameras or the distance d1 between every two adjacent cameras are calculated. By means of the method in the embodiment, the obtained parameters have the relatively-high accuracy degree, so that when a visual system is used for assisting in the device for conducting the operation such as positioning, machining and detecting, the accuracy of positioning, machining and detecting is sufficiently guaranteed, and the high-accuracy positioning, machining and detecting requirements under certain scenes can be met.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a method and system for calibrating camera parameters of a one-dimensional array camera group. Background technique [0002] In the field of processing and manufacturing, in order to obtain better processing quality, vision systems are often used to assist equipment in positioning, processing, and inspection operations. When using vision systems to assist equipment in positioning, processing, and inspection operations, it is necessary to The camera parameters of the vision system are calibrated. [0003] The camera parameters of the vision system mainly include the angle θ between the camera and the motion platform, the distance d between adjacent cameras in the camera group, and the precision p of the camera, that is, how many microns are represented by one pixel in the camera, where θ is mainly composed of Caused by processing or installation errors, although d can be obtained ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/80
Inventor 舒远王光能周蕾米野高云峰
Owner 深圳市大族机器人有限公司
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