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Annular video camera array calibration system and its method

A technology for calibrating systems and cameras, applied in image data processing, 3D modeling, instruments, etc., can solve the problems of increased performance requirements of acquisition servers and difficulty in achieving optimal grouping, saving manpower, small data volume, and communication. simple effect

Inactive Publication Date: 2008-02-20
安徽沃孚医疗科技有限公司
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AI Technical Summary

Problems solved by technology

However, this method is difficult to achieve optimal grouping, and the calculation is concentrated on each collection server, which increases the performance requirements of the collection server

Method used

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  • Annular video camera array calibration system and its method
  • Annular video camera array calibration system and its method
  • Annular video camera array calibration system and its method

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Embodiment Construction

[0060] The present invention proposes a ring camera array group calibration method, which is described in detail in conjunction with the accompanying drawings and embodiments as follows:

[0061] The ring camera array calibration system of this embodiment includes: an array composed of 24 cameras distributed in a ring, 6 collection servers, and 1 calibration server, and the calibration board adopts cardboard that is relatively common in the world.

[0062] The calibration server configuration of this embodiment:

[0063] CPU: Intel PIV dual-3.0GHz

[0064] Memory: 1G

[0065] Operating system: Windows XP

[0066] Control program: BBNC Control Server

[0067] The configuration of the acquisition server in this embodiment:

[0068] CPU: Intel PIV 2.8GHz

[0069] Memory: 512M

[0070] Operating system: Windows XP

[0071] Acquisition program: BBNC Multicapture

[0072] In this embodiment, each collection server is connected to 4 cameras through 1394 connection ports. A t...

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Abstract

The utility model relates to a calibration system and method for annular camera array, which belongs to the technical field computer multimedia; wherein, the system comprises a calibration plate, a camera array, a plurality of collection servers, a calibration server and a plurality of net wires; the technical proposal is that all cameras are used to shoot each position pose of the calibration plate in the annular field and images of each position pose are collected; a plurality of collection servers are used to conduct respective corner detection on all collected images and homography matrix Hij of each camera is calculated; the calibration server optimizes and classifies the camera array according to the number of public position pose that can be detected between two cameras as the relationship weight; joint calibration inside groups is carried out on each group of camera arrays and the external parameters of each group are unified with the external parameters with the same camera as world coordinate origin; the calibration parameters are optimized and the maximum likelihood estimate of internal and external parameters of camera array is gained. The utility model can precisely restructure three-dimensional scenes and can be viewed from any perspective.

Description

technical field [0001] The invention belongs to the technical field of computer multimedia, and in particular relates to a technology for simply and accurately obtaining internal and external parameters of ring camera arrays through group calibration. Background technique [0002] Camera calibration is an integral step in 3D computer vision. By calibrating the camera, its internal and external parameters can be obtained, so that the three-dimensional structure of the scene can be calculated from multiple images. Camera calibration is the basis of various 3D reconstruction technologies. Accurate calibration is the prerequisite for accurate reconstruction. With accurate calibration data, 3D scenes can be accurately reconstructed and viewing from any viewpoint can be realized. [0003] The calibration system of a general ring camera array includes: acquisition server, control server, calibration board, camera array, network cable, etc. [0004] The calibration method of the a...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 李坤刘烨斌戴琼海
Owner 安徽沃孚医疗科技有限公司
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