Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Method of Repairing the Phase Error Caused by Saturation Using Phase Fusion Algorithm

A technology of fusion algorithm and phase error, applied in the field of phase error to achieve the effect of repairing saturation error and expanding the scope of application

Active Publication Date: 2016-08-17
SICHUAN UNIV
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a phase fusion algorithm to repair the phase error caused by light intensity saturation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Method of Repairing the Phase Error Caused by Saturation Using Phase Fusion Algorithm
  • A Method of Repairing the Phase Error Caused by Saturation Using Phase Fusion Algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0011] In order to make the object, technical solution and advantages of the 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.

[0012] attached figure 1 It is a flow chart of the phase fusion algorithm of the present invention to repair the saturation error. The equipment used consists of a CASIOXJ-A155V projector, a Prosilica GC650C camera and an ordinary computer. Among them, the resolution of the projector is 800×600, and the resolution of the camera is 640×480.

[0013] attached figure 2 It is the front view and side view of the 3D reconstruction of the wall of the scanned object when the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is a method for repairing the phase error caused by saturation by using a phase fusion algorithm, and relates to how to repair the phase error caused by saturation in the field of three-dimensional measurement. Adjust the camera so that the pixels are not saturated, the projector projects a solid-color grayscale pattern on the surface of the object, and uses the camera to record the scanned image; when the camera overflows, the projector projects multiple groups of structured light patterns to scan the object, two adjacent The maximum gray value (amplitude) of the group pattern increases, and the camera records the scanned image; calculates the modulation intensity and phase of the scanned structured light image; combines the captured pure color image to normalize the modulation intensity; selects each pixel The maximum normalized modulation intensity of , and its corresponding phase is taken as the final phase. The present invention fuses by selecting the phase corresponding to the maximum normalized modulation intensity, and is not limited by the degree of saturation. When the measurement system is nonlinear, it can also effectively repair the saturation error and expand the applicable range of repairing the saturation error.

Description

technical field [0001] The invention relates to the technical field of optical three-dimensional data processing, in particular to using a phase fusion algorithm to repair phase errors generated by saturation. Background technique [0002] Phase measurement profilometry is an active, non-contact three-dimensional measurement technique. It has the advantages of high speed and high precision. This technology is widely used in fields such as product inspection, biometric identification, and 3D modeling. The measurement system of this technology is composed of a common computer, projector and camera. This technology projects a set of sinusoidal gratings onto the surface of the measured object through a projector, and the camera captures image data synchronously, and then processes the captured data to obtain the three-dimensional shape of the object. However, when the intensity values ​​of some pixels in the acquired image exceed the maximum quantization value of the camera, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/25
Inventor 刘凯孙伟文李娜
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com