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

Normal sampling recalculation method based on image reconstruction three-dimensional data

A technology for 3D data and image reconstruction, applied in image data processing, calculation, 3D modeling, etc., can solve the problem of measurement data resampling of optical 3D measurement system, and achieve accurate, efficient, and easy-to-implement sampling area division. Effect

Active Publication Date: 2012-06-27
南京禺疆电子技术有限公司
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the measurement data resampling problem of the optical three-dimensional measurement system and provide a normal line resampling algorithm based on image reconstruction three-dimensional data

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A normal re-sampling method based on image reconstruction of three-dimensional data. The method uses computer management software to use the image taken by the optical three-dimensional measurement system to calculate that the three-dimensional data points obtained by calculation and the pixel points of the image have a corresponding relationship. Its characteristics The point is: the specific implementation steps of the method are:

[0015] (1) Under the condition of meeting the design accuracy requirements, according to the physical three-dimensional geometric characteristics of the image display, the level of the pixel resample area and the neglect area that do not need to be resampled are set according to the density of pixel resample. The level identification code 1-N of the pixel re-sampling area and the threshold value of the re-sampling area of ​​different levels, set the ignore area identification code 0 that does not need re-sampling, and the principle of setting ...

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 discloses a normal sampling resampling method based on image reconstruction three-dimensional data, which belongs to the field of three-dimensional data processing and digital image processing, and solves the problem of data resampling in an optical three-dimensional measurement process. The sampling process comprises the following steps of: presetting sampling levels and thresholds, wherein different levels indicate different density; establishing a corresponding relation table between the digital image pixels and three-dimensional data points; adaptively establishing a Hash table, and calculating a normal for each Hash table element, substituting the normal of each data point in the Hash table with corresponding normal of the Hash table, orderly accumulating points through the normal in the region, and summing; judging the sampling level according to the magnitude of the sum value, establishing a corresponding sampling lookup table according to the corresponding relation table between the digital image pixels and the three-dimensional data points, and correspondingly determining the values of the lookup table according to the preset sampling levels; and finally, sampling the three-dimensional data according to the established sampling lookup table. The method has the advantages of being high in efficiency, describing regional characteristics by the least data points without losing the characteristics, accurately dividing sample regions, flexibly setting the sampling levels, being easy to realize and the like.

Description

Technical field [0001] The invention belongs to the technical field of digital image and three-dimensional data processing, and specifically relates to a resampling algorithm based on image reconstruction of three-dimensional data. Background technique [0002] Optical 3D measurement technology is an important non-contact measurement technology. It has the advantages of fast data acquisition, rich data, simple operation, and easy maintenance. At present, it has been widely used in shape measurement, automatic online inspection, product quality analysis, Cultural relics protection and other fields. However, depending on the resolution of the image taken by the measurement system, the amount of data obtained at a time can reach hundreds of thousands to millions of points. In order to obtain all the data, the three-dimensional measurement system generally measures more than one object according to the complexity of the measured object. The amount of data varies from time to time, a...

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
IPC IPC(8): G06T17/00G01B11/24
Inventor 孟祥林赵灿程俊廷刘春媛何万涛周波
Owner 南京禺疆电子技术有限公司
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