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Method, device, computer equipment and storage medium for eliminating background light

A technology of background light and background light intensity, applied to a method of eliminating background light, computer equipment and computer-readable storage media, and the field of devices, can solve problems such as large deviation, complex algorithm, unfavorable rapid measurement, etc., and achieve fast and The effect of precise removal

Active Publication Date: 2021-05-04
LIGHTIN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to calculate the mean square error of the image and perform operations such as Fourier transform, and the algorithm is relatively complicated.
At the same time, this method assumes that the average value of each image collected during the measurement process is approximately equal, and in some cases the assumption and the actual deviation are large
The third method is to set the projection and image acquisition time to an integer period multiple of the ambient light or the exposure time is much longer than its period, but this method is not conducive to rapid measurement

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  • Method, device, computer equipment and storage medium for eliminating background light
  • Method, device, computer equipment and storage medium for eliminating background light
  • Method, device, computer equipment and storage medium for eliminating background light

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Embodiment Construction

[0043] In order to facilitate the understanding of the present application, and to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth to facilitate a full understanding of the application, and preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive. The present application can be implemented in many other ways that are different from those described here, and those skilled in the art can make similar improvements wi...

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Abstract

The present invention relates to a method, device, computer equipment and computer-readable storage medium for eliminating background light. Multiple sets of phase-shifted sinusoidal fringes are projected through a projector under background light, and multiple deformed fringe patterns are obtained; according to the deformed fringe pattern , calculate the fringe sum of each set of phase-shifted sinusoidal fringes; then calculate the background light component of each deformed fringe image according to the fringe sum, and process multiple deformed fringe images according to the background light component to eliminate multiple deformed fringe images The background light component of , can quickly and accurately remove the background light in the deformed fringe image.

Description

technical field [0001] The invention relates to the field of optical three-dimensional measurement, in particular to a method, device, computer equipment and computer-readable storage medium for eliminating background light. Background technique [0002] Optical 3D sensing technology based on structured light illumination has a wide range of applications in industrial inspection, product quality control, machine vision, real-time localization and mapping (SLAM), film and television special effects, and biomedicine. Phase measurement profilometry (PMP) is an important optical three-dimensional sensing technology due to its high measurement accuracy and high data density. In phase measurement profilometry, the background light is required to be constant in a measurement, otherwise there will be a wave-shaped error with the same frequency as the fringe in the measured phase, and this error will also exist in the finally obtained three-dimensional data. In indoor 3D measurement...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/02G01B11/25G06T5/00
CPCG01B11/00G01B11/02G01B11/2545G06T5/005
Inventor 李勇魏一振张卓鹏
Owner LIGHTIN INC