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Method and system for measuring accuracy of tof camera module

A camera module and precision measurement technology, applied in the field of TOF, can solve problems such as measurement errors

Active Publication Date: 2021-12-31
ZHEJIANG SUNNY INTELLIGENT OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In particular, in the system error, the change of the measurement distance is an important reason for the error in the normal use of the TOF camera module; at the same time, the depth data collected by the TOF camera module with different fields of view are also different, which will also be different. produce measurement error

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  • Method and system for measuring accuracy of tof camera module
  • Method and system for measuring accuracy of tof camera module
  • Method and system for measuring accuracy of tof camera module

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Embodiment Construction

[0062] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0063] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention...

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Abstract

The present application relates to a method for measuring the accuracy of a TOF camera module and its system, wherein the method includes: setting a baseline and a test target formed by the TOF camera module and the distance measuring units located on both sides of the TOF camera module When it is parallel and the distance between the test target plate is the first distance, the depth image of the test target plate is acquired by the TOF camera module, wherein the depth image has at least two regions; the obtained The true value of the distance between the TOF camera module and the test target plate; the accuracy corresponding to each region in the depth image is obtained based on the pixel depth value and the true distance value in each region in the depth image respectively and, based on the accuracy corresponding to each region in the depth image, obtain the depth measurement accuracy of the TOF camera module.

Description

technical field [0001] The invention relates to the field of TOF technology, in particular to a method for measuring the accuracy of a TOF camera module and a system thereof. Background technique [0002] TOF (time-of-flight) technology mainly completes the calculation of distance through the time of flight of light. In the 1990s, a large number of hot fields in optoelectronics: TOF-based measurement technology and image sensors with special functions were combined for the first time to form a non-contact, real-time, and broad application prospect of TOF that can obtain a large amount of depth information. Camera module, TOF camera or 3D camera. [0003] After years of research and development and continuous development, the TOF 3D camera is widely used in 3D reconstruction, industrial control, robotics, medical biology, security and monitoring due to its small size, high frame rate, no need for scanning, and no dependence on external light. And logistics and other industr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00G06T7/50
CPCH04N17/002G06T7/50
Inventor 徐铭王良丹屠昕
Owner ZHEJIANG SUNNY INTELLIGENT OPTICAL TECH CO LTD