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 meth...

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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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