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Rapid phase unwrapping method and device based on edge detection, equipment and medium

An edge detection and phase unwrapping technology, applied in the computer field, can solve the problems of low versatility and real-time performance, low measurement efficiency, and a large number of training samples in the training process.

Active Publication Date: 2021-09-14
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need to project an additional fringe pattern, the time-phase unwrapping method is less efficient and not suitable for dynamic measurements
[0012] The phase unwrapping algorithm based on deep learning can improve the efficiency of phase unwrapping to a certain extent, but due to the need for a large number of training samples and complex training process in the early stage, the versatility and real-time performance are not high
[0013] In summary, the existing methods are difficult to balance the relationship between phase recovery efficiency and accuracy

Method used

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  • Rapid phase unwrapping method and device based on edge detection, equipment and medium
  • Rapid phase unwrapping method and device based on edge detection, equipment and medium
  • Rapid phase unwrapping method and device based on edge detection, equipment and medium

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Embodiment Construction

[0077] In order to make the objectives, technical solutions and advantages of the present invention, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely intended to illustrate the invention and are not intended to limit the invention.

[0078] See Figure 4 The first embodiment of the present invention provides a rapid phase expansion method based on edge detection, which can be performed by an edge detected fast phase expansion device (hereinafter referred to as phase expansion device), especially, from the phase expansion device One or more processors are executed to achieve the following steps:

[0079] S101, a deformation striped image is obtained; wherein the deformed striped image is generated by the ideal grating stripes.

[0080] In the present embodiment, the phase deployment device can be a computer or other terminal having a data processing pow...

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Abstract

The invention provides a rapid phase unwrapping method and device based on edge detection, equipment and a medium. The method comprises the following steps: acquiring a deformed stripe image, wherein the deformed stripe image is generated by modulating ideal grating stripes through a measured object; identifying and positioning the boundary of the wrapped phase diagram by using an edge detection operator to obtain an edge detection result of the wrapped phase diagram; correcting abnormal edge points in the edge detection result, and mapping the corrected edge points into an initial fringe series; optimizing the initial fringe series, and calculating an absolute phase corresponding to the grating fringe image by using the optimized fringe series. According to the invention, fast recovery of the absolute phase is realized.

Description

Technical field [0001] The present invention relates to the field of computer technology, and more particularly to a fast phase expansion method, apparatus, apparatus, apparatus, and medium based on edge detection. Background technique [0002] Striped projection ads is a full field of view, non-contact, high efficiency, and high-precision optical 3D measurement techniques, which are now widely used in the fields of additive manufacturing, virtual reality, biomedical and industrial testing. Striped projection adopry projected a stripe pattern with a certain coding regularly through the projection device, using a camera to perform real-time collected by the camera and transmitted the collected striped image to the computer, and finally The geometric relationship of the system restores the three-dimensional dot cloud of the object. When the stripes are encoded, the stripes will be deformation. The stripes of the stripe are mainly reflected in the phase change, while the phase chang...

Claims

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Application Information

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IPC IPC(8): G06T7/13G06T5/00G06K9/46G01B11/25
CPCG06T7/13G01B11/254G06T5/70
Inventor 刘宏立石博马子骥倪雪峰刘建伟董湘龙
Owner HUNAN UNIV