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Multi-head panoramic camera combined calibration method

A panoramic camera and combined calibration technology, which is applied in the field of multi-lens panoramic camera combined calibration, can solve the problems of MPC application development restrictions and high implementation costs

Pending Publication Date: 2021-12-07
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-lens panoramic camera combination calibration method, which aims to solve the problem of relying on the calibration method of 3D control information in the prior art, which is not only expensive to implement, but also requires professional operation, which restricts the development of MPC applications. question

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  • Multi-head panoramic camera combined calibration method

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Embodiment Construction

[0029] see Figure 1 to Figure 11 , the present invention provides a multi-lens panoramic camera combination calibration method, comprising the following steps:

[0030] Place the MPC on a two-dimensional turntable to perform rotation photography and calibration of the checkerboard;

[0031] The calibration process is divided into two consecutive stages, the former stage is the rotation sequence image calibration of the side-looking camera, and the latter stage is the multi-view geometric calibration of the center camera.

[0032] The rotation sequence image calibration of the side-view camera includes:

[0033] Combining checkerboard and two-dimensional turntable coordinate system settings to establish a strict rotation photography equation and based on it to give the initial value of the external parameters of the side-view camera;

[0034] Then, taking the corner points of the checkerboard image and the connection points between adjacent side-looking cameras as observatio...

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Abstract

The invention relates to the technical field of computer vision, and particularly discloses a multi-head panoramic camera combined calibration method. The method comprises the following steps: placing MPCs on a two-dimensional turntable to carry out rotary photographing and calibration on a checkerboard; and dividing a calibration process into two successive stages, wherein the previous stage is rotation sequence image calibration of side-view cameras, and the latter stage is multi-view geometric calibration of a center camera. According to the method, high-precision calibration of external parameters of an MPC can be realized only by using a common two-dimensional numerical control turntable and a single checkerboard, the cost is low, the operation is simple, the requirement on a real-time environment is low, the dependence on a 3D calibration field is successfully eliminated, and the method has a good application value.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a multi-lens panoramic camera combination calibration method. Background technique [0002] As an effective monitoring method, cameras have already played an irreplaceable role in social public security, management scheduling and production control. Multi-lens panoramic camera MPC (Multi-Head Panoramic Camera), or OMS (Omnidirectional Multi-camera System), is packaged by a number of traditional surveillance cameras with different viewing angles and physical independence, and obtains 180° by splicing sprites in real time. (or 360°) field of view and high-resolution panoramic video that is basically consistent in all directions, the key is to accurately obtain the internal and external parameters of the MPC sub-camera to re-project its multi-channel output video to the set sphere (or cylinder). Many fields such as security monitoring, virtual reality, and real map generati...

Claims

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Application Information

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IPC IPC(8): G06T7/80
CPCG06T7/80
Inventor 吴军黄明益周阳
Owner GUILIN UNIV OF ELECTRONIC TECH
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