Standard Specification for 3D Imaging Data Exchange, Version 1.0

ABSTRACT
This specification describes a data file exchange format for three-dimensional (3D) imaging data, known as the ASTM E57 3D file format, Version 1.0. In this specification, the term "E57 file" is used as a short version of "ASTM E57 3D file format". An E57 file is capable of storing 3D point data (those produced by 3D imaging systems), attributes associated with 3D point data (color and intensity), and 2D imagery (digital photographs obtained using a 3D imaging system). This specification describes all data that will be stored in the file, which is a combination of binary and eXtensible Markup Language (XML) formats.
SCOPE
1.1 This specification describes a data file exchange format for three-dimensional (3D) imaging data, known as the ASTM E57 3D file format, Version 1.0. The term “E57 file” will be used as shorthand for “ASTM E57 3D file format” hereafter.  
1.2 An E57 file is capable of storing 3D point data, such as that produced by a 3D imaging system, attributes associated with 3D point data, such as color or intensity, and 2D imagery, such as digital photographs obtained by a 3D imaging system. Furthermore, the standard defines an extension mechanism to address future aspects of 3D imaging.  
1.3 This specification describes all data that will be stored in the file. The file is a combination of binary and eXtensible Markup Language (XML) formats and is fully documented in this specification.  
1.4 All quantities standardized in this specification are expressed in terms of SI units. No other units of measurement are included in this standard.  
1.4.1 Discussion—Planar angles are specified in radians, which are considered a supplementary SI unit.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This standard does not purport to address legal concerns, if any, associated with its use. It is the responsibility of the user of this standard to comply with appropriate regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Historical
Publication Date
28-Feb-2019
Technical Committee
Current Stage
Ref Project

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E2807 −11 (Reapproved 2019)
Standard Specification for
1
3D Imaging Data Exchange, Version 1.0
This standard is issued under the fixed designation E2807; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This specification describes a data file exchange format 2.1 ASTM Standards:
for three-dimensional (3D) imaging data, known as theASTM E2544Terminology for Three-Dimensional (3D) Imaging
Systems
E57 3D file format, Version 1.0. The term “E57 file” will be
3
used as shorthand for “ASTM E57 3D file format” hereafter.
2.2 IEEE Standard:
754-1985IEEEStandardforBinaryFloating-PointArithme-
1.2 An E57 file is capable of storing 3D point data, such as
tic
that produced by a 3D imaging system, attributes associated
4
with 3D point data, such as color or intensity, and 2D imagery,
2.3 IETF Standard:
such as digital photographs obtained by a 3D imaging system.
RFC 3720 Internet Small Computer Systems Interface
Furthermore, the standard defines an extension mechanism to
(iSCSI)
address future aspects of 3D imaging. 5
2.4 W3C Standard:
XML Schema Part 2:Datatypes Second Edition
1.3 Thisspecificationdescribesalldatathatwillbestoredin
the file. The file is a combination of binary and eXtensible
3. Terminology
Markup Language (XML) formats and is fully documented in
this specification.
3.1 Definitions—Terminologyusedinthisspecificationcon-
forms to the definitions included in Terminology E2544.
1.4 All quantities standardized in this specification are
expressed in terms of SI units. No other units of measurement
3.2 Definitions of Terms Specific to This Standard:
are included in this standard.
3.2.1 backward compatibility, n—ability of a file reader to
1.4.1 Discussion—Planar angles are specified in radians,
understandafilecreatedbyawriterofanolderversionofafile
which are considered a supplementary SI unit.
format standard.
1.5 This standard does not purport to address all of the
3.2.2 byte, n—grouping of 8 bits, also known as an octet.
safety concerns, if any, associated with its use. It is the
3.2.3 camel case, n—naming convention in which com-
responsibility of the user of this standard to establish appro-
poundwordsarejoinedwithoutspaceswitheachword’sinitial
priate safety, health, and environmental practices and deter-
letter capitalized within the component and the first letter is
mine the applicability of regulatory limitations prior to use.
either upper or lowercase.
1.6 This standard does not purport to address legal
3.2.4 camera image, n—regular, rectangular grid of values
concerns, if any, associated with its use. It is the responsibility
that stores data from a 2D imaging system, such as a camera.
of the user of this standard to comply with appropriate
3.2.5 camera projection model, n—mathematical formula
regulatory limitations prior to use.
usedtoconvertbetween3Dcoordinatesandpixelsinacamera
1.7 This international standard was developed in accor-
image.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.2.6 file offset, n—see physical file offset.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
1 3
This specification is under the jurisdiction of ASTM Committee E57 on 3D For referenced IEEE standards, visit http://grouper.ieee.org/groups/754.
4
Imaging Systems and is the direct responsibility of Subcommittee E57.11 on Data For referenced Internet Engineering Task Force (IETF) standards, visit the
Interoperability. IETF website, www.ietf.org.
5
Current edition approved March 1, 2019. Published March 2019. Originally String representations (the lexical space) of the numeric datatypes are docu-
approved in 2011. Last previous edition approved in 2011 as E2807–11. DOI: mented in the W3C standard: “XML Schema Part 2: Datatypes Second Edition”,
10.1520/E2807-11R19. available on the website http://www.w3.org/TR/xmlschema-2/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2807−11 (2019)
3.2.7 file-level coordinate system, n—coordinate system 4.12 W3C—WorldWide Web Consortium
common to all 2D and 3D data sets in a given E57 file.
4.13 XML—eXtensible Ma
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2807 − 11 E2807 − 11 (Reapproved 2019)
Standard Specification for
1
3D Imaging Data Exchange, Version 1.0
This standard is issued under the fixed designation E2807; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification describes a data file exchange format for three-dimensional (3D) imaging data, known as the ASTM E57
3D file format, Version 1.0. The term “E57 file” will be used as shorthand for “ASTM E57 3D file format” hereafter.
1.2 An E57 file is capable of storing 3D point data, such as that produced by a 3D imaging system, attributes associated with
3D point data, such as color or intensity, and 2D imagery, such as digital photographs obtained by a 3D imaging system.
Furthermore, the standard defines an extension mechanism to address future aspects of 3D imaging.
1.3 This specification describes all data that will be stored in the file. The file is a combination of binary and eXtensible Markup
Language (XML) formats and is fully documented in this specification.
1.4 All quantities standardized in this specification are expressed in terms of SI units. No other units of measurement are
included in this standard.
1.4.1 Discussion—Planar angles are specified in radians, which are considered a supplementary SI unit.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This standard does not purport to address legal concerns, if any, associated with its use. It is the responsibility of the user
of this standard to comply with appropriate regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
E2544 Terminology for Three-Dimensional (3D) Imaging Systems
3
2.2 IEEE Standard:
754-1985 IEEE Standard for Binary Floating-Point Arithmetic
4
2.3 IETF Standard:
RFC 3720 Internet Small Computer Systems Interface (iSCSI)
5
2.4 W3C Standard:
XML Schema Part 2: Datatypes Second Edition
3. Terminology
3.1 Definitions—Terminology used in this specification conforms to the definitions included in Terminology E2544.
3.2 Definitions of Terms Specific to This Standard:
1
This specification is under the jurisdiction of ASTM Committee E57 on 3D Imaging Systems and is the direct responsibility of Subcommittee E57.04 on Data
Interoperability.
Current edition approved Feb. 1, 2011March 1, 2019. Published March 2011March 2019. Originally approved in 2011. Last previous edition approved in 2011 as
E2807 – 11. DOI: 10.1520/E2807-11R19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
For referenced IEEE standards, visit http://grouper.ieee.org/groups/754.
4
For referenced Internet Engineering Task Force (IETF) standards, visit the IETF website, www.ietf.org.
5
String representations (the lexical space) of the numeric datatypes are documented in the W3C standard: “XML Schema Part 2: Datatypes Second Edition”, available
on the website http://www.w3.org/TR/xmlschema-2/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2807 − 11 (2019)
3.2.1 backward compatibility, n—ability of a file reader to understand a file created by a writer of an older version of a file
format standard.
3.2.2 byte, n—grouping of 8 bits, also known as an octet.
3.2.3 camel case, n—naming convention in which compound words are joined without spaces with each word’s initial letter
capitalized within the component and the first letter is either upper or lowercase.
3.2.4 camera image, n—regular, rectangular grid of values that stores data from a
...

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