GB/T 40139-2021 English PDF

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GB/T 40139-2021: Measuring method for surface areas of materials - Three dimensional area measurement base on hyperspectral imaging
Status: Valid

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GB/T 40139-2021	259	Add to Cart	3 days	Measuring method for surface areas of materials - Three dimensional area measurement base on hyperspectral imaging	Valid

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Basic data

Standard ID: GB/T 40139-2021 (GB/T40139-2021)
Description (Translated English): Measuring method for surface areas of materials - Three dimensional area measurement base on hyperspectral imaging
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Word Count Estimation: 14,198
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40139-2021: Measuring method for surface areas of materials - Three dimensional area measurement base on hyperspectral imaging

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Measuring method for surface areas of materials-Three dimensional area measurement base on hyperspectral imaging ICS 71.040.50 CCSG31 National Standards of People's Republic of China Measurement of material surface area Hyperspectral imaging three-dimensional area measurement method Released on 2021-05-21 2021-09-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principle 2 5 The first method rotating platform area measuring instrument method 2 5.1 Reagents and materials 2 5.2 Apparatus and equipment 2 5.3 Sample pretreatment 2 5.4 Measurement 3 5.5 Expression of analysis results 3 5.6 Precision 3 6 The second method handheld area measuring instrument method 3 6.1 Reagents and materials 3 6.2 Instruments and equipment 3 6.3 Sample pretreatment 4 6.4 Measurement 4 6.5 Expression of analysis results 4 6.6 Precision 4 Appendix A (informative) Instrument diagram 5 Appendix B (Normative) Calibration and Confirmation of Rotating Platform Area Measuring Instrument 6 Appendix C (Informative) Three-dimensional graphics of typical samples 7 Appendix D (Normative) Hand-held device accuracy calibration 8

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Standardization Technical Committee on Inspection Methods for Key Products of Quality Supervision (SAC/TC374). Drafting organizations of this document. Shenzhen Institute of Metrology and Quality Inspection, CCIC Warner (Beijing) Quality Technology Center Co., Ltd., Chengdu Products Quality Inspection Research Institute Co., Ltd., Warner Pass (Beijing) Certification Co., Ltd., China Inspection Alliance (Beijing) Quality Inspection Technology Research Institute Co., Ltd. the company. The main drafters of this document. Li Yongle, Yang Jun, Zheng Yanyan, Chen Shudi, Zhang Qimei, Zhong Wenjian, Cai Tongling, Wang Jie, Ye Xiuling, Yang Chunyao, Ou Zhenyuan, Liu Yu, Xie Xiaojuan, Wu Wanjun, Wu Yanhui, Li Xi, Hu Yuling, Li Zumin, Meng Jie, Li Bo, Cai Xiaoxian, Zheng Cunzhe. Measurement of material surface area Hyperspectral imaging three-dimensional area measurement method

1 Scope

This document specifies a method for measuring the surface area of materials based on hyperspectral imaging technology. This document is applicable to the measurement of the surface area of food contact materials, jewelry and other materials. This document does not apply to porous materials with a hole diameter of less than 1mm, and materials containing strip textures with a diameter of less than 1mm.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Surface area The sum of the area of all three-dimensional graphics surfaces. 3.2 Hyperspectral imaging Combining imaging technology and spectroscopy technology to detect the two-dimensional space and spectral information of the target, and obtain high-resolution continuous, narrow-band Image data. 3.3 Structuredlightsystem A group of system structures composed of projectors and cameras. Note. The system uses a projector to project specific light information on the surface of the object and after the background, which is collected by the camera. According to the light signal change caused by the object, calculate Information such as the position and depth of the object, and then restore the entire three-dimensional space. 3.4 3D data reconstruction technology 3Ddatareconstructiontechnology Based on the data images of scenes and objects obtained through the camera, the images are analyzed and processed, and then combined with computer vision knowledge to derive Three-dimensional information of objects in the real environment. 3.5 Triangular patch In the computer-simulated three-dimensional space, a triangular grid is composed of three points in the space coordinate system. 3.6 Pointcloud A collection of points that express the spatial distribution of the sample and the characteristics of the surface of the sample in a computer-simulated three-dimensional space. ......

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