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Planar Calibration Device for Fisheye Camera

A calibration device and camera technology, which is applied in the field of camera testing, can solve the problems of many operations by testers and increase the difficulty of operations, and achieve the effect of reducing the number of shooting operations and reducing the difficulty

Active Publication Date: 2020-05-29
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the testers operate more times and increases the difficulty of operation

Method used

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  • Planar Calibration Device for Fisheye Camera
  • Planar Calibration Device for Fisheye Camera
  • Planar Calibration Device for Fisheye Camera

Examples

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Embodiment Construction

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0032] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0033] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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PUM

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Abstract

The invention discloses a planar calibration device of a fisheye camera. The device comprises calibration graphic cards, a calibration graphic card fixing mount, a fisheye camera module and a host, wherein the calibration graphic card fixing mount is provided with at least four calibration graphic cards; each calibration graphic card keeps different gestures relative to the calibration graphic card fixing mount; the fisheye camera module comprises a fisheye camera fixing mount and a sending module, wherein the fisheye camera fixing mount is used for fixing a fish eye camera to be detected; the fisheye camera fixing mount has at least one degree of freedom relative to the calibration graphic card fixing mount to enable the fisheye camera to be detected to shoot four calibration pictures at different angles to obtain multiple groups of images; the sending module is used for sending multiple groups of images to the host; and the host is used for utilizing multiple groups of images to obtain the parameter of the fish eye camera to be detected. According to one embodiment of the invention, shooting operation frequencies are reduced.

Description

technical field [0001] The invention relates to the technical field of camera testing, and more particularly, to a plane calibration device for a fisheye camera. Background technique [0002] Fisheye cameras are widely used in electronic products, such as virtual reality devices. In order to accurately obtain the parameters (internal and external parameters) of the fisheye camera and eliminate the distorted image of the fisheye camera, it is necessary to perform plane calibration on the fisheye camera. [0003] At present, at least 10 images are required for planar calibration of a fisheye camera. These 10 pictures are taken by the fisheye camera at different angles, or these 10 pictures are obtained by placing the calibration picture at different angles for 10 times, and then shooting with the fisheye camera. This makes the number of operations of the tester more and increases the difficulty of the operation. In addition, for some camera systems that require high precisi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80
CPCG06T7/80
Inventor 张兴鑫
Owner GOERTEK OPTICAL TECH CO LTD