Rapid matching method and device of corresponding points for phase mapping assisted three-dimensional imaging system

A technology corresponding to point matching and imaging devices, applied to measuring devices, optical devices, instruments, etc., can solve the problems of long search time and large search range

Active Publication Date: 2017-05-31
SHENZHEN UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for fast corresponding point matching of a three-dimensional imaging system assisted by phase mapping, aiming to solve the problems of large search range and long search time in the process of three-dimensional corresponding point matching

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  • Rapid matching method and device of corresponding points for phase mapping assisted three-dimensional imaging system
  • Rapid matching method and device of corresponding points for phase mapping assisted three-dimensional imaging system

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[0067] In order to make the object, technical solution and advantages 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.

[0068] The present invention introduces a phase mapping method on the basis of the classic method for finding corresponding points of phase sub-pixels based on epipolar constraints, and further proposes a method and device for fast corresponding point matching of a three-dimensional imaging system assisted by phase mapping.

[0069] The following is a detailed introduction to the phase mapping assisted three-dimensional imaging system fast corresponding point matching method, combined with figure 1 and figure 2 shown. The method is based on the three-dimensional imaging system, the three-dimensi...

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Abstract

The invention is applicable to the technical field of optical three-dimensional digital imaging and provides a rapid matching method of corresponding points for a phase mapping assisted three-dimensional imaging system; the method comprises the steps of S1, acquiring an image including information of an object under measurement, and calculating to obtain first and second phase distribution diagrams composed of phase values Phi of points acquired; S2, using the phase values Phi of the points in the first phase distribution diagram and preset first calibration data to estimate spatial three-dimensional point coordinates of the object under measurement by means of phase mapping; S3, re-projecting the spatial three-dimensional point coordinates to a plane of the second phase distribution diagram to obtain reference corresponding points; S4, on polar lines of one-pixel range using one reference corresponding point, corresponding to a certain point in the first phase distribution diagram, as a center, finding a corresponding point to the certain point according to the phase value Phi of the certain point so that the corresponding point is matched. The method provided herein has narrowed finding range and shortened finding time.

Description

technical field [0001] The invention belongs to the technical field of optical three-dimensional digital imaging, and in particular relates to a method and a device for fast corresponding point matching of a three-dimensional imaging system assisted by phase mapping. Background technique [0002] The trinocular 3D imaging system is a non-contact, full-field measurement optical 3D digital imaging system. The system uses a projection device to project a group of sinusoidal gratings or quasi-sine gratings onto the object surface, uses an imaging device to collect the fringe pattern modulated by the surface shape of the object, and uses phase shift technology to calculate the spatial phase value of each measurement point, and then uses the phase The corresponding points are found on the imaging surfaces of the two imaging devices, and the three-dimensional information of the object surface is calculated according to the triangulation method. The trinocular 3D imaging system has...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 刘晓利杨洋蔡泽伟彭翔
Owner SHENZHEN UNIV
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