Three-dimensional imaging method and system based on light field

A three-dimensional imaging and light field technology, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems of robustness, low efficiency of three-dimensional imaging and measurement, avoid robustness, enhance anti-interference ability, and save time cost effect

Active Publication Date: 2020-02-07
SHENZHEN UNIV
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Problems solved by technology

[0005] The invention provides a light field three-dimensional imaging method without phase unwrapping, aiming to solve the low efficiency and robustness problems of three-dimensional imaging and measurement

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  • Three-dimensional imaging method and system based on light field
  • Three-dimensional imaging method and system based on light field
  • Three-dimensional imaging method and system based on light field

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Embodiment Construction

[0036] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0037] see figure 1 , figure 1 It is a schematic diagram of the process flow structure of the present invention,

[0038] The invention provides a three-dimensional imaging method based on light field, the specific process includes:

[0039] Step S110, obtaining the structured light field information of the measured object;

[0040] Step S120, process the structured light field information of the measured object according to the structured light field information of the measured object, and extract the folded phase encoding field information of the measured object;

[0041] Step S130, performing continuous processing on the folded phase encoding field information of the measured object to obtain the response information of the measured ...

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Abstract

The invention provides a three-dimensional imaging method based on a light field. The three-dimensional imaging method specifically comprises a step of acquiring structured light field information ofa measured object, a step of processing the structured light field information of the measured object according to the structured light field information of the measured object and extracting folded phase coding field information of the measured object, a step of carrying out continuous processing on the folded phase coding field information of the measured object to obtain response information ofthe measured object in a depth range, and a step of realizing three-dimensional reconstruction of the measured object according to the response information of the measured object in the depth range.According to the invention, after the light field information of the measured object is obtained, the coding information is continuously processed, the measurement can be completed only through localcalculation without unfolding and folding a phase coding field, the time cost of projection and acquisition is saved, the measurement efficiency is improved, the problem of robustness is avoided, andthe anti-interference capability of the measurement is enhanced.

Description

technical field [0001] The invention relates to the technical field of optical imaging, especially the field of three-dimensional imaging based on light field. Background technique [0002] The structured light illumination based on fringe projection projects the sinusoidal fringe pattern onto the surface of the object, and the modulated phase can be demodulated through the collected deformed fringe pattern, thus providing encoded information for 3D imaging and measurement. [0003] The arctangent operation in the phase demodulation process obtains the phase folded within a phase cycle range, that is, the folded phase. Using the folded phase directly may cause ambiguity problems. To avoid the ambiguity problem, the folded phase can be phase unwrapped to obtain a continuous phase distribution. [0004] At present, there are two typical phase unwrapping methods, which are spatial phase unwrapping and temporal phase unwrapping. Spatial phase unwrapping relies on the phase re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
CPCG01B11/25G01B11/2509
Inventor 刘晓利蔡泽伟彭翔
Owner SHENZHEN UNIV
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