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Photogrammetry-based wide-field binocular vision calibration device and calibration method

A technology of binocular vision and photogrammetry, which is applied in image data processing, instruments, calculations, etc., can solve the problems of calibration of two cameras without a common field of view, low calibration accuracy, complicated operation, etc., and achieve low requirements for the measurement environment, The calibration process is simple and easy to operate

Active Publication Date: 2016-04-06
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing binocular vision calibration method cannot calibrate two cameras without a common field of view, and the calibration accuracy is low, the operation is complicated and the cost is high

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  • Photogrammetry-based wide-field binocular vision calibration device and calibration method

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Embodiment Construction

[0051] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] figure 1 A schematic front view showing a large field of view binocular vision calibration device based on photogrammetry according to an embodiment of the present invention; figure 2 A schematic diagram of the back side of a large field of view binocular vision calibration device based on photogrammetry according to an embodiment of the present invention is shown.

[0053] Such as Figure 1-2 As shown, the large field of view binocular vision calibration device based on photogrammetry includes:

[0054] Adjusting rod 1, first positioning pin 2, second positioning pin 3, first target 4 and second target 5;

[0055] One end of the adjustment rod 1 is provided with a plurality of positioning holes along the adjustment direction of the first target 4 and the second target 5;

[0056] The other end of the adjustment rod 1 is provided with a plura...

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Abstract

The invention relates to a photogrammetry-based wide-field binocular vision calibration device and a calibration method. The method comprises steps: a standard camera for calibrating inner parameters is used for acquiring three-dimensional coordinates of marking points of a first target and a second target in a world coordinate system through encoding and decoding; a first camera is used for acquiring the image of the first target, and a second camera is used for acquiring the image of the second target; the images acquired by the first camera and the second camera and the three-dimensional coordinates of the marking points in the world coordinate system are used for binocular vision calibration, and thus rotation matrixes and translation vectors when the first camera coordinate system and the second camera coordinate system are converted to the world coordinate system are acquired respectively. The photogrammetry-based wide-field binocular vision calibration device and the calibration method has the advantages of simple calibration process, easy operation, high precision, low cost and low measurement environment requirements, and can be applied to industrial field measurement.

Description

technical field [0001] The invention relates to the field of photogrammetry, in particular to a large-field-of-view binocular vision calibration device and method based on photogrammetry. Background technique [0002] The traditional binocular vision calibration method is mainly based on the principle of triangulation to obtain three-dimensional information, which requires the camera field of view to cover the entire field of view as much as possible. It is mainly realized by selecting a large-size, high-precision target or a camera with a large field of view. The target selected by the first method is expensive and difficult to process, and the calibration accuracy of the second method is low. [0003] There are literatures that do not depend on the target, and self-calibration of the structural parameters of the visual sensor is carried out through the constraints between the internal parameters or based on the vanishing points of parallel lines. The calibration is simple...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T5/70
Inventor 刘志伟魏京利孙笃玲程芳玲刘然黄召明张松
Owner CRRC QINGDAO SIFANG CO LTD
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