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Depth camera temperature error correcting method and system

A technology of depth camera and temperature error, which is applied in the field of optics and electronics, can solve the problems such as the decrease of the accuracy of the depth camera, and achieve the effect of improving the measurement accuracy

Active Publication Date: 2018-02-02
SHENZHEN ORBBEC CO LTD
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Problems solved by technology

[0004] In order to solve the problem in the prior art that the accuracy of the depth camera is reduced by temperature, the present invention provides a method and system for correcting the temperature error of the depth camera

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[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be used for both fixing and circuit communication.

[0021] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", ...

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Abstract

The invention provides a depth camera temperature error correcting method and system. The method comprises: acquiring a spot image of a current target by using a depth camera, and calculating a deviation value between pixels corresponding to the spot image and a reference spot image; modeling the measurement error of the depth camera caused by temperature change; correcting the current measurementdeviation value by utilizing the modeled measurement error, and calculating a depth image according to the corrected deviation value. A relation model between the temperature change and the depth measurement error is established, and a relatively real depth value can be directly calculated by obtaining the distance change between a lens and an image sensor of an acquisition module caused by the temperature change, so the measurement precision of the depth camera can be improved.

Description

technical field [0001] The invention relates to the fields of optics and electronics, in particular to a method and system for correcting a temperature error of a depth camera. Background technique [0002] In some applications based on depth images, such as 3D modeling, dimension measurement, etc., depth cameras are required to obtain high-precision and accurate depth images. However, since depth cameras are composed of laser light sources, optical components, image sensors and other components, so Inevitably affected by its own temperature and ambient temperature, the temperature will lead to unstable performance of optical components, and also cause thermal deformation of the depth camera body. These factors will reduce the quality of the depth image, thereby reducing the accuracy of the depth camera . [0003] Aiming at this problem, the present invention provides a method and system for correcting the temperature error of a depth camera. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/50G01B11/02
CPCG06T7/50G01B11/026
Inventor 刘贤焯许星
Owner SHENZHEN ORBBEC CO LTD
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