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GB/T 26958.21-2020 English PDF

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US$344.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 26958.21-2020: Geometrical product specifications (GPS). Filtration - Part 21: Linear profile filters: Gaussian filters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 26958.21-2020	344	Add to Cart	3 days	Geometrical product specifications (GPS). Filtration - Part 21: Linear profile filters: Gaussian filters	Valid

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GB/T 26641 GB/T 28784.2 GB/T 28619 GB/T 26958.20 GB/T 26958.30 GB/T 26958.29

Basic data

Standard ID: GB/T 26958.21-2020 (GB/T26958.21-2020)
Description (Translated English): Geometrical product specifications (GPS). Filtration - Part 21: Linear profile filters: Gaussian filters
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 17.040.20
Word Count Estimation: 18,171
Date of Issue: 2020-12-14
Date of Implementation: 2021-07-01
Quoted Standard: GB/Z 26958.1-2011; GB/Z 26958.20-2011
Adopted Standard: ISO 16610-21-2011, IDT
Regulation (derived from): National Standard Announcement No. 28 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the metrological characteristics of Gaussian filters for contour filtering, and specifies the method for separating long-wave and short-wave components of surface contours. This standard is applicable to surface contour roughness feature extraction operations, and other signal filtering analysis occasions can be used as a reference.

GB/T 26958.21-2020: Geometrical product specifications (GPS). Filtration - Part 21: Linear profile filters: Gaussian filters

---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.
(Product Geometric Technical Specification (GPS) Filtering Part 21: Linear Contour Filter Gaussian Filter) ICS 17:040:20 J04 National Standards of People's Republic of China Product Geometric Technical Specification (GPS) Filtering Part 21: Linear contour filter Gaussian filter (ISO 16610-21:2011, IDT) 2020-12-14 release 2021-07-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Gaussian contour filter characteristics of open contour 2 5 Gaussian contour filter characteristics of closed contour 5 Appendix A (informative appendix) Execution error of open and closed contour filtering (convolution algorithm) 8 Appendix B (informative appendix) Example 12 Appendix C (informative appendix) and the relationship between the filter matrix model 13 Appendix D (informative appendix) and GPS matrix model relationship 14 Reference 15

Foreword

GB/T 26958 "Geometric Technical Specifications for Products (GPS) Filtering" is divided into 89 parts, and the following 12 parts have been released: ---Part 1: Overview and basic concepts; ---Part 20: Basic concepts of linear contour filters; ---Part 21: Linear contour filter Gaussian filter; ---Part 22: Linear contour filter spline filter; ---Part 28: End effect of contour filter; ---Part 29: Linear contour filter spline wavelet; ---Part 30: Basic concepts of robust contour filter; ---Part 31: Robust contour filter Gaussian regression filter; ---Part 32: Robust contour filter spline filter; ---Part 40: Basic concepts of morphological contour filter; ---Part 41: Morphological contour filter disc and horizontal line segment filter; ---Part 49: Morphological contour filter scale space technology: This part is part 21 of GB/T 26958: This section was drafted in accordance with the rules given in GB/T 1:1-2009: The translation method used in this part is equivalent to the ISO 16610-21:2011 "Geometric Technical Specification for Products (GPS) Filtering Part 21: Line Characteristic contour filter Gaussian filter: The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows: ---JJF1001-2011 General measurement terms and definitions (ISO /IEC Guide99:2007, MOD); ---JJF1059:1-2012 Measurement Uncertainty Evaluation and Expression (ISO /IEC Guide98-3:2008, MOD): This section has made the following editorial changes: ---Rewrite Appendix D in accordance with the requirements of GB/T 20308-2020: This part is proposed and managed by the National Standardization Technical Committee for Product Geometric Technical Specifications (SAC/TC240): Drafting organizations of this section: Huazhong University of Science and Technology, Shaanxi Weir Mechanical and Electrical Technology Co:, Ltd:, Beijing Times Peak Technology Co:, Ltd:, Shandong Road First is Intelligent Technology Co:, Ltd:, Shanghai Institute of Metrology and Testing Technology, CMC Productivity Promotion Center, Jiangsu Ruijing Optoelectronics Research Institute Co:, Ltd: the company: The main drafters of this section: Lu Wenlong, Zhang Tao, Lang Yanmei, Ming Cuixin, Hao Jianguo, Qu Chaoqing, Zhu Yue, Chen Gang: Product Geometric Technical Specification (GPS) Filtering Part 21: Linear contour filter Gaussian filter

1 Scope

This part of GB/T 26958 specifies the metrological characteristics of Gaussian filters for contour filtering, and gives the long wave and Shortwave component method: This section applies to the extraction of surface profile roughness features, and other signal filtering and analysis occasions can be used as a reference:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article Pieces: For undated references, the latest version (including all amendments) applies to this document: GB /Z 26958:1-2011 Product Geometric Technical Specification (GPS) Filtering Part 1: Overview and Basic Concepts (ISO / TS16610-1:2006, IDT) GB /Z 26958:20-2011 Geometric Technical Specifications for Products (GPS) Filtering Part 20: Basic Outline of Linear Contour Filter Read (ISO /T S16610-20:2006, IDT) ISO /IEC Guide 98-3:2008 Measurement Uncertainty Evaluation and Expression [Uncertaintyofmeasurement-Part 3:Guide totheexpressionofuncertaintyinmeasurement(GUM:1995)] ISO /IEC Guide 99:2007 General Metrology Terms and Definitions [Internationalvocabularyofmetrology-Basicand generalconceptsandassociatedterms(VIM)]

3 Terms and definitions

The terms and definitions defined in GB /Z 26958:1, GB /Z 26958:20, ISO /IEC Guide 98-3 and ISO /IEC Guide 99 are applicable to This document: For ease of use, some terms and definitions in GB /Z 26958:1 and GB /Z 26958:20 are listed repeatedly below: 3:1 Linear profile filter linearprofilefilter A contour filter that divides the contour into long wave and short wave components: [GB /Z 26958:20-2011, definition 3:1] 3:2 Openprofile openprofile A surface profile with two end points and a finite length: [GB /Z 26958:1-2011, definition 3:7] 3:3 Closedprofile Surface profile with no endpoints and limited length: [GB /Z 26958:1-2011, definition 3:8] ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 26958.21-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 26958.21-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 26958.21-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 26958.21-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.