Camera spatial position relation calibration device in multi-camera photographing measurement system

A technology of photogrammetry and camera space, which is applied in the direction of photographic devices, image data processing, instruments, etc., can solve the problems of lack, calibration of two or more cameras, etc., and achieve the effect of simple operation, low cost, and accurate calibration results

Inactive Publication Date: 2014-03-12
TONGJI UNIV +1
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Problems solved by technology

[0005] There are currently few methods for calibrating two or more cameras with different fields of vi

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  • Camera spatial position relation calibration device in multi-camera photographing measurement system
  • Camera spatial position relation calibration device in multi-camera photographing measurement system

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 As shown, a camera spatial position relationship calibration device in a multi-camera photogrammetry system includes a target plane 1, multiple cameras 2, a camera mounting frame 3 and a PC 5, and the target plane 1 is installed with the cameras Frames 3 are placed at set intervals (0.5m to 2m), and the plurality of cameras 2 are respectively arranged on the camera mounting frame 3, and the fields of view of two adjacent cameras do not overlap, and the PC 4 passes through the data line 4 is connected to the camera 2, and the target plane 1 is provided with a plurality of square targets respectively composed of four target points, and the plurality of square targets are respectively located in the field of view of a plurality of cameras 2, and the plurality of square targets side lengths are equal. The number of said ...

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Abstract

The invention relates to a camera spatial position relation calibration device in a multi-camera photographing measurement system. The calibration device comprises a target plane, a plurality of cameras, a camera mounting rack and a PC (Personal Computer) machine. The target plane and the camera mounting rack are arranged at a set interval; the plurality of cameras are respectively arranged on the camera mounting rack; the PC machine is connected with the cameras; the target plane is provided with a plurality of square targets respectively consisting of four target points; the plurality of square targets are respectively and correspondingly positioned in view fields of the plurality of cameras; the PC machine controls the cameras to acquire images of the corresponding square targets, obtains a position of each target point in a camera coordinate system and calculates a spatial position relation between each two corresponding cameras according to a position relation between each two square targets. Compared with the prior art, the camera spatial position relation calibration device in the multi-camera photographing measurement system has the advantages of accurate calibration result, simplicity for operation, low cost and the like.

Description

technical field [0001] The invention relates to a camera calibration device, in particular to a camera spatial position relationship calibration device in a multi-camera photogrammetry system. Background technique [0002] Photographic three-dimensional measurement technology has the advantages of non-contact and fast speed, and has broad application prospects in industrial inspection and other fields. The realization of three-dimensional measurement of objects mainly depends on multiple cameras. The inherent internal geometric parameters of each camera and the positional relationship between multiple cameras, that is, external parameters, need to be calibrated in advance. The quality of camera calibration results directly determines the accuracy of measurement results, so it is necessary to study camera calibration methods and develop corresponding devices. [0003] At present, for the calibration of two-two position parameters of multiple cameras, one method is to direct...

Claims

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Application Information

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IPC IPC(8): G06T7/00G01C11/02
Inventor 袁勇艾青姚旭朋徐祥星欧飞奇王旭东
Owner TONGJI UNIV
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