Method and device for measuring objects with multiple cameras

A multi-camera, object technology, applied in the field of image processing, can solve the problem of reducing the accuracy of object size measurement results, etc.

Active Publication Date: 2019-01-15
HANS LASER TECH IND GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a method and device for measuring objects with multiple cameras to solve the problem of reducing the accuracy of object size measurement results

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  • Method and device for measuring objects with multiple cameras
  • Method and device for measuring objects with multiple cameras
  • Method and device for measuring objects with multiple cameras

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Embodiment Construction

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0048] figure 1 It is an application environment diagram of the system for measuring objects with multiple cameras in one embodiment. The multi-camera system for measuring objects includes a terminal 110 and multiple cameras (camera 131, camera 132, camera 133, camera 134, camera 134, camera 135, camera 136, camera 137, and camera 138), where multiple cameras are connected to the terminal On 110, multiple cameras can be controlled through the terminal 110, including the object 120 to be measured.

[0049] Such as figure 2 As shown, in one embodiment, a method for multi-camera measurement of a...

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Abstract

The invention relates to a method for measuring an object through multiple cameras and a device thereof. The method comprises the steps that images of different areas of a calibration board photographed by multiple cameras respectively are received; the mapping relation between the pixel coordinate system of each camera and a calibration coordinate system is acquired according to the images of different areas of the calibration board; the images of different areas of an object photographed by the multiple cameras respectively are received, and the pixel coordinates of the images of different areas of the object are acquired; the pixel coordinates of the images of different areas of the object are mapped to the calibration coordinate system according to the mapping relation; and the measurement result of the object is obtained according to the coordinates of the images of different areas of the object in the calibration coordinate system. Therefore, the object or the cameras does / do not need to be rotated or moved so that mechanical error caused by rotation or movement of the cameras can be avoided, and accuracy of the object measurement result can be enhanced.

Description

Technical field [0001] The present invention relates to the field of image processing technology, in particular to a method and device for measuring objects with multiple cameras. Background technique [0002] Due to the size of the camera's field of view and the limitations of the shooting environment, it is difficult for a single camera to achieve measurement and imaging of the entire larger-sized object. The traditional measurement method is to rotate and move the platform on which the measured object is placed, or by moving the camera to measure and image different areas of large-scale objects. When measuring the size of the object, these methods need to calculate complex pixel coordinate systems and platform coordinate systems. And the coordinate conversion between calibration coordinate systems. In addition, there will be certain mechanical errors in the movement of the platform or camera, which will reduce the accuracy of the final measurement results. Summary of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 文茜舒远李玉廷王光能闫静高云峰
Owner HANS LASER TECH IND GRP CO LTD
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