ISO/IEC 14496-16:2011/Amd 3:2016
(Amendment)Information technology — Coding of audio-visual objects — Part 16: Animation Framework eXtension (AFX) — Amendment 3: Printing material and 3D graphics coding for browsers
Information technology — Coding of audio-visual objects — Part 16: Animation Framework eXtension (AFX) — Amendment 3: Printing material and 3D graphics coding for browsers
Technologies de l'information — Codage des objets audiovisuels — Partie 16: Extension du cadre d'animation (AFX) — Amendement 3: Représentation efficiente de maillages 3D à multiples attributs
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INTERNATIONAL ISO/IEC
STANDARD 14496-16
Fourth edition
2011-11-01
AMENDMENT 3
2016-12-15
Information technology — Coding of
audio-visual objects —
Part 16:
Animation Framework eXtension (AFX)
AMENDMENT 3: Printing material and
3D graphics coding for browsers
Technologies de l’information — Codage des objets audiovisuels —
Partie 16: Extension du cadre d’animation (AFX)
AMENDEMENT 3: Représentation efficiente de maillages 3D à
multiples attributs
Reference number
ISO/IEC 14496-16:2011/Amd.3:2016(E)
©
ISO/IEC 2016
---------------------- Page: 1 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO/IEC 2016 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
Amendment 3 to ISO/IEC 14496-16:2011 was prepared by ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
© ISO/IEC 2016 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
Information technology — Coding of audio-visual
objects —
Part 16:
Animation Framework eXtension (AFX)
AMENDMENT 3: Printing material and 3D graphics coding for
browsers
Page 48, 4.3.6.4.2
Replace the following:
IndexedRegionSet {
coord Coordinate {point [
0 0 0, 1 0 0, 1 1 0, 0 1 0, 0 1 1, 0 0 1, 1 0 1, 1 1 1, 0.5 0.5 0
]}
texCoord TextureCoordinate {point [
0 0, 0.333 0, 0.667 0, 1 0, 0 1, 0.333 1, 0.667 1, 1 1, 0.667 0.5
]}
region [
Region {
coordIndex [
2 1 8 -1, 1 0 8 -1, 0 3 8 -1, 3 2 8 -1, 1 2 7 -1, 7 6 1 -1, 5 6 7 -1, 7 4 5 -1
]
texCoordIndex [5 1 0 4 7 6 2 3 8]
texture ImageTexture {url "./pix/136.png"}
}
Region {
coordIndex [4 3 0 -1, 0 5 4 -1, 6 5 0 -1, 0 1 6 -1, 3 4 7 -1, 7 2 3 -1]
texCoordIndex [4 7 6 5 1 0 3 2]
texture ImageTexture {url "./pix/245.png"}
}
]
}
With the following:
IndexedRegionSet {
[…]
Region {
coordIndex [
2 1 8 -1, 1 0 8 -1, 0 3 8 -1, 3 2 8 -1, 6 5 0 -1, 0 1 6 -1, 5 6 7 -1, 7 4 5 -1
]
[…]
}
Region {
coordIndex [4 3 0 -1, 0 5 4 -1, 1 2 7 -1, 7 6 1 -1, 3 4 7 -1, 7 2 3 -1]
[…]
}
}
© ISO 2016 – All rights reserved 1
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ISO/IEC 14496-16:2011/Amd.3:2016(E)
Page 48, 4.3.7
Replace the current 4.3.7 (which shall be renumberred to 4.3.8) with the following.
4.3.7 3D meshes with Printing Material Texture
4.3.7.1 General
The IndexedPrintingRegionSet (IPRS) node is based on the IndexedRegionSet described in 4.3.6
and it describes region-based printing material information which can be used in the 3D printing
application. The main design concept of IPRS is that the representation shall be easy to the designer.
Based on this concept, IPRS has adopted texture mapping method for describing the printing material
information because it is very popular to the designer. Thanks to the region-based texture mapping,
per face or region or global material mapping is possible.
4.3.7.2 IndexedPrintingRegionSet node
4.3.7.2.1 Node interface
IndexedPrintingRegionlSet {
eventIn MFInt32 set_colorIndex
eventIn MFInt32 set_coordIndex
eventIn MFInt32 set_normalIndex
eventIn MFInt32 set_texCoordIndex
exposedField SFString unit #mm, cm, m, inch
exposedField SFFloat minimumVerticalResolution #unit is unit
exposedField SFNode color NULL
exposedField SFNode coord NULL
exposedField SFNode normal NULL
exposedField SFNode texCoord TRUE
field SFBool ccw [] #[-1,inf)
field MFInt32 colorIndex TRUE
field SFBool colorPerVertex TRUE
field SFBool convex []
field MFNode printingRegions 0 #[0,inf)
field SFFloat creaseAngle [] #[-1,inf)
field MFInt32 normalIndex
field SFBool normalPerVertex TRUE
field SFBool solid TRUE
field MFInt32 texCoordIndex [] #[0,inf)
}
2 © ISO 2016 – All rights reserved
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ISO/IEC 14496-16:2011/Amd.3:2016(E)
4.3.7.2.2 Functionality and semantics
An IPRS node has exactly the same fields as an IRS one, except for the physical size information of
printout, and region field, which has been replaced by printingMaterialRegion.
4.3.7.3 PrintingRegion node
4.3.7.3.1 Node interface
PrintingRegion {
exposedField MFInt32 printingMaterialType NULL
exposedField SFFloat surfaceThickness #unit is unit
exposedField SFNode color NULL
exposedField SFNode normal NULL
exposedField SFNode texCoord NULL
exposedField SFNode colorTexture NULL
exposedField SFNode printingMaterialTexture NULL
exposedField SFNode textureTransform NULL
field MFInt32 colorIndex [] #[-1,inf)
field MFInt32 coordIndex [] #[-1,inf)
field MFInt32 normalIndex [] #[-1,inf)
field MFInt32 texCoordIndex [] #[0,inf)
field MFInt32 printingMaterialTexCoordIndex [] #[0,inf)
}
4.3.7.3.2 Functionality and semantics
field name semantic
unit It has single string value which shall be one of the length unit defined in
the ISO/IEC 23005-6 (UnitTypeCS). It defines the unit of the coord field.
When this value is set as mm, all the coord values are interpreted as
mm (millimetre).
surfaceThickness It defines the suggested surface thickness of the model. For example,
a cylinder model with 5 surfaceThickness is interpreted as “Print the
cylinder with 5 mm surface and leave the inside empty.” Here, the unit
for surfaceThickness is the same as unit files.
minimumVerticalResolution It defined the resolution for the acquisition process. When the model
is designed based on the scanner, the scanner resolution is mentioned
here. When this field is set as 0.1, the 3D printing resolution which is
smaller than minimumVerticalResolution does not make sense. In this
way, the printing resolution may be estimated. Here, the unit for mini-
mumVerticalResolution is the same as unit files.
printingRegions It has PrintingRegion node which defined the physical material char-
acteristics of print-out. It has multiple nodes. When a single element is
provided, the whole model is considered as one region.
printingMaterialType It has multiple integers that defines the printing materials of print-out
as a reference to a classification defined in ISO/IEC 23005-6 (Printing-
MaterialCS). When a single material is provided, the whole region is
printed as one material.
© ISO 2016 – All rights reserved 3
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ISO/IEC 14496-16:2011/Amd.3:2016(E)
field name semantic
colorTexture It defines the color texture used in each region for rendering purpose.
printingMaterialTexture It defines the printing material texture map used in each region. It shall
be lossless gray image format such as PNG because the lossy compres-
sion results in a misunderstanding on the printing material informa-
tion. And the values in the image are restricted by printingMaterial-
Type. All values in the printing material texture are one value in the
printingMaterialType array.
For example, when the printingMaterialType is provided as [0, 1, 2],
the printingMaterialTexture shall has values among 0, 1, and 2. When
the array length of printingMaterialType is 1, the printingMaterial-
Texture is null because this region is printed as a single material with
printingMaterialType.
texCoordIndex It defines the texture coordinate indexes of colorTexture.
printingMaterialTexCoordIndex It defines the texture coordinate indexes of printingMaterialTexture.
When this is null, texCoordIndex is used as printingMaterialTexCo-
ordIndex.
4.3.7.4 Examples
The following examples are based on the IRS representation described in 4.3.6.4.3. It has two
printingRegion and each printingRegion has colorTexture and printignMaterialTexture as illustrated in
Figure 25.
a) colorTexture(136.png) b) printingMaterialTexture(136_material.png)
c) colorTexture(245.png) d) printingmaterialTexture(245_material.png)
Figure 25 — IPRS example with two printingRegion;
4 © ISO 2016 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
In this example, three materials [0, 1, 2] are used thus the values in the printingMaterialTexture are
restricted by 0, 1 and 2.
IndexedPrintingRegionSet{
unit "mm"
minimumVerticalResolution 0.1
coord Coordinate {
point [ 0 0 0, 1 0 0, 1 1 0, 0 1 0, 0 1 1, 0 0 1, 1 0 1, 1 1 1, 0.5 0.5 0 ]
}
texCoord TextureCoordinate {
point [ 0 0, 0.333 0, 0.667 0, 1 0, 0 1, 0.333 1, 0.667 1, 1 1, 0.1667 0.5 ]
}
printingRegions [
PrintingRegion {
surfaceThickness 10.0
printingMaterialType [0, 1, 2]
coordIndex [ 2 1 8 -1, 1 0 8 -1, 0 3 8 -1, 3 2 8 -1, 6 5 0 -1, 0 1 6 -1, 5 6 7 -1,
7 4 5 -1 ]
texCoordIndex [5 1 0 4 7 6 2 3 8]
colorTexture ImageTexture { url "./pix/136.png" }
printingMaterialTexture ImageTexture { url "./material/136_material.png" }
}
PrintingRegion {
surfaceThickness 15.0
printingMaterialType [0, 1, 2]
coordIndex [4 3 0 -1, 0 5 4 -1, 1 2 7 -1, 7 6 1 -1, 3 4 7 -1, 7 2 3 -1]
texCoordIndex [4 7 6 5 1 0 3 2]
colorTexture ImageTexture { url "./pix/245.png" }
printingMaterialTexture ImageTexture { url "./material/245_material.png" }
}
]
}
Page 273, Clause 6
Insert the following clause.
6 Web3D Coding
6.1 General
This document describes a scene representation using a JSON schema. The reason for choosing JSON is
the native support by modern browsers and easiness of integration with javascript. The JSON schema is
used to connect the object 2graph elements, MPEG AFX tools, images and shaders. The main components
of the library (see Figure 82) are the JSON parser and the GraphicsCodec, whereas the GraphicsCodec
contains both the SC3DMC and BBA decoders. The input of the library is the JSON description file. The
JSON Parser analyses its data and calls the appropriate decoders, the SC3DMC decoder for the mesh
data and BBA decoder for the animated data. The output of the decoders is then used to initialize the
corresponding glIndexedFaceSet structures that are then used by the WebGL engine to render the scene.
© ISO 2016 – All rights reserved 5
---------------------- Page: 8 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
Figure 82 — Overview of the Web3DCoding architecture
6.2 Scope
Define a JSON schema that allows connections between object graph elements to MPEG 4 AFX
compression tools (SC3DMC and BBA), image compression tools (JPEG, JPEG2000 and PNG) and shaders.
6.3 JSON Schema
{
"type": "object",
"properties": {
"object": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description" : "The name of the object. The name has to be unique in
the object
definition"
},
"shapes": {
"type": "array",
"items": {
"type": "object",
"properties" : {
geometry_filename" : {
"type" : "string",
6 © ISO 2016 – All rights reserved
---------------------- Page: 9 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
"description" : "An URL to the file containing the 3D mesh
compressed (MPEG-SC3DMC) data for the shape"
},
"transform": {
"type" : "array",
"items" : {
"type" : "number"
},
"description" : "An Array of values representing the transformation
matrix specifying the transformation of the shape relative to the object
center."
},
"appearance" : {
"type" : "object",
"properties" : {
"lineProperties" : {
"type" : "object",
"properties" : {
"applied" : {
"type" : "boolean",
"description" : "Specifies if the additional properties
shall be applied to all the line geometry."
},
"linetype" : {
"type" : "number",
"description" : "Selects a line pattern as defined in the
Table 77. Line type 1 is the default. X3D. If a
linetype that is not supported is requested, linetype 1
shall be used."
},
"linewidthScaleFactor" : {
"type" : "number",
"description" : "is a multiplicative value that scales a
browser dependent nominal linewidth by the linewidth scale
factor. This resulting value shall then be mapped to the
nearest available line width. A value less than or equal
to zero refers to the minimum available line width."
}
},
"description" : "Specifies additional properties to be applied
to all line geometry."
},
"materials" : {
"type" : "object",
"properties" : {
"diffuseColor" : {
"type" : "array",
"items" : {
"type" : "number"
},
"description" : "An array of values, reflects all light
sources depending on the angle of the surface with
respect to the light source. The more directly the
surface faces the light, the more diffuse light reflects"
},
"emissiveColor" :{
"type" : "array",
"items" : {
"type" : "number"
},
"description" : "An array of values, represents the
Models <> objects. This can be useful for
displaying pre-lit models (where the light energy of the
room is computed explicitly), or for displaying
scientific data."
},
"shininess" : {
"type" : "number",
© ISO 2016 – All rights reserved 7
---------------------- Page: 10 ----------------------
ISO/IEC 14496-16:2011/Amd.3:2016(E)
"description" : "Determine the specular highlights (e.g.,
the shiny spots on an object). Lower shininess values
produce soft glows, while higher values result in
sharper, smaller highlights"
},
"specularColor" : {
"type" : "array",
"items" : {
"type" : "number"
},
"description" : "An array of values. When the angle from
the light to the surface is close to the angle from the
surface to the viewer, the specularColor is added to the
diffuse and ambient colour calculations."
},
"transparent" : {
...
DRAFT AMENDMENT
ISO/IEC 14496-16:2011/DAM 3
ISO/IEC JTC 1/SC 29 Secretariat: JISC
Voting begins on: Voting terminates on:
2016-01-04 2016-04-04
Information technology — Coding of audio-visual objects —
Part 16:
Animation Framework eXtension (AFX)
AMENDMENT 3: Printing material and 3D graphics coding for
browsers
Technologies de l’information — Codage des objets audiovisuels —
Partie 16: Extension du cadre d’animation (AFX)
AMENDEMENT 3: .
ICS: 35.040
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/IEC 14496-16:2011/DAM 3:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO/IEC 2015
---------------------- Page: 1 ----------------------
ISO/IEC 14496-16:2011/DAM 3:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO/IEC 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC 14496-16:2011/DAM 3
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO/IEC 14496-16:2011 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia
information.
© ISO/IEC 2015 – All rights reserved iii
---------------------- Page: 3 ----------------------
DRAFT AMENDMENT ISO/IEC 14496-16:2011/DAM 3
Information technology — Coding of audio-visual objects —
Part 16: Animation Framework eXtension (AFX), AMENDMENT
3: Printing material and 3D graphics coding for browsers
In Section 4.3.6.4.2, replace :
IndexedRegionSet {
coord Coordinate {point [
0 0 0, 1 0 0, 1 1 0, 0 1 0, 0 1 1, 0 0 1, 1 0 1, 1 1 1, 0.5 0.5 0
]}
texCoord TextureCoordinate {point [
0 0, 0.333 0, 0.667 0, 1 0, 0 1, 0.333 1, 0.667 1, 1 1, 0.667 0.5
]}
region [
Region {
coordIndex [
2 1 8 -1, 1 0 8 -1, 0 3 8 -1, 3 2 8 -1, 1 2 7 -1, 7 6 1 -1, 5 6 7 -1, 7 4 5 -1
]
texCoordIndex [5 1 0 4 7 6 2 3 8]
texture ImageTexture {url "./pix/136.png"}
}
Region {
coordIndex [4 3 0 -1, 0 5 4 -1, 6 5 0 -1, 0 1 6 -1, 3 4 7 -1, 7 2 3 -1]
texCoordIndex [4 7 6 5 1 0 3 2]
texture ImageTexture {url "./pix/245.png"}
}
]
}
With:
IndexedRegionSet {
[…]
Region {
coordIndex [
2 1 8 -1, 1 0 8 -1, 0 3 8 -1, 3 2 8 -1, 6 5 0 -1, 0 1 6 -1, 5 6 7 -1, 7 4 5 -1
]
[…]
}
Region {
coordIndex [4 3 0 -1, 0 5 4 -1, 1 2 7 -1, 7 6 1 -1, 3 4 7 -1, 7 2 3 -1]
[…]
}
}
Before 4.3.7 (which shall be renumbered to 4.3.8), "Solid representation", add:
4.3.7 3D meshes with Printing Material Texture
4.3.7.1 Introduction
The IndexedPrintingRegionSet (IPRS) node is based on the IndexedRegionSet described in 4.3.6 and it
describes region based printing material information which can be used in the 3D printing application. The
main design concept of IPRS is that the representation shall be easy to the designer. Based on this concept,
IPRS has adopted texture mapping method for describing the printing material information because it is very
© ISO/IEC 2015 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO/IEC 14496-16:2011/DAM 3
popular to designer. Thanks to the region based texture mapping, per face or region or global material
mapping is possible.
4.3.7.2 IndexedPrintingRegionSet node
4.3.7.2.1 Node interface
IndexedPrintingRegionlSet {
eventIn MFInt32 set_colorIndex
eventIn MFInt32 set_coordIndex
eventIn MFInt32 set_normalIndex
eventIn MFInt32 set_texCoordIndex
exposedField SFString unit #mm, cm, m, inch
exposedField SFFloat minimumVerticalResolution #unit is unit
exposedField SFNode color NULL
exposedField SFNode coord NULL
exposedField SFNode normal NULL
exposedField SFNode texCoord NULL
field SFBool ccw TRUE
field MFInt32 colorIndex [] # [-1,inf)
field SFBool colorPerVertex TRUE
field SFBool convex TRUE
field MFNode printingRegions []
field SFFloat creaseAngle 0 # [0,inf)
field MFInt32 normalIndex [] # [-1,inf)
field SFBool normalPerVertex TRUE
field SFBool solid TRUE
field MFInt32 texCoordIndex [] # [0,inf)
}
4.3.7.2.2 Functionality and semantics
An IPRS node has exactly the same fields as an IRS one, except for the physical size information of printout,
and region field, which has been replaced by printingMaterialRegion.
4.3.7.3 PrintingRegion node
4.3.7.3.1 Node interface
PrintingRegion {
exposedField MFInt32 printingMaterialType NULL
exposedField SFFloat surfaceThickness #unit is unit
exposedField SFNode color NULL
exposedField SFNode normal NULL
exposedField SFNode texCoord NULL
exposedField SFNode colorTexture NULL
exposedField SFNode printingMaterialTexture NULL
exposedField SFNode textureTransform NULL
field MFInt32 colorIndex [] # [-1,inf)
field MFInt32 coordIndex [] # [-1,inf)
field MFInt32 normalIndex [] # [-1,inf)
field MFInt32 texCoordIndex [] # [0,inf)
field MFInt32 printingMaterialTexCoordIndex [] # [0,inf)
}
2 © ISO/IEC 2015 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/IEC 14496-16:2011/DAM 3
4.3.7.3.2 Functionality and semantics
field name semantic
unit It has single string value which shall be one of the length unit defined in
the ISO/IEC 23005-6 (UnitTypeCS). It defines the unit of the coord field.
When this value is set as mm, all the coord values are interpreted as
mm (milli-meter).
surfaceThickness It defines the suggested surface thickness of the model. For example a
cylinder model with 5 surfaceThickness is interpreted as “Print the
cylinder with 5 mm surface and leave the inside empty.” Here the unit
for surfaceThickness is same as unit files.
minimumVerticalResolution It defined the resolution for the acquisition process. When the model is
designed based on the scanner, the scanner resolution is mentioned
here. When this field is set as 0.1, the 3D printing resolution which is
smaller than minimumVerticalResolution does not make sense. In this
way, the printing resolution may be estimated. Here the unit for
minimumVerticalResolution is same as unit files.
printingRegions It has PrintingRegion node which defined the physical material
characteristics of print-out. It has multiple nodes. When single element
is provided, the whole model is considered as one region.
printingMaterialType It has multiple integers that defines the printing materials of print-out
as a reference to a classification defined in ISO/IEC 23005-6
(PrintingMaterialCS). When a single material is provided, the whole
region is printed as one material.
colorTexture It defines the color texture used in each region for rendering purpose.
printingMaterialTexture It defines the printing material texture map used in each region. It shall
be lossless gray image format such as PNG because the lossy
compression results in a misunderstanding on the printing material
information. And the values in the image are restricted by
printingMaterialType. All values in the printing material texture are
one value in the printingMaterialType array.
For example, When the printingMaterialType is provided as [0, 1, 2],
the printingMaterialTexture shall has values among 0, 1, and 2. When
the array length of printingMaterialType is 1, the
printingMaterialTexture is null because this region is printed as single
material with printingMaterialType.
texCoordIndex It defines the texture coordinate indexes of colorTexture.
printingMaterialTexCoordIndex It defines the texture coordinate indexes of printingMaterialTexture.
When this is null, texCoordIndex is used as
printingMaterialTexCoordIndex.
4.3.7.4 Examples
The following examples are based on the IRS representation described in 4.3.6.4.3 Third IRS example. It has
two printingRegion and each printingRegion has colorTexture and printignMaterialTexture as illustrated
in Figure Amd3.X.
© ISO/IEC 2015 – All rights reserved 3
---------------------- Page: 6 ----------------------
ISO/IEC 14496-16:2011/DAM 3
Figure Amd3.X-(a) Figure Amd3.X-b
Figure Amd3.X-c Figure Amd3.X-d
Figure Amd3.X — IPRS example with two printingRegion;
(a) colorTexture(136.png), (b) printingMaterialTexture(136_material.png)
(c) colorTexture(245.png), (d) printingmaterialTexture(245_material.png
In this example, three material [0, 1, 2] are used thus the values in the printingMaterialTexture are restricted
by 0, 1 and 2.
IndexedPrintingRegionSet{
unit “mm”
minimumVerticalResolution 0.1
coord Coordinate {
point [ 0 0 0, 1 0 0, 1 1 0, 0 1 0, 0 1 1, 0 0 1, 1 0 1, 1 1 1, 0.5 0.5 0 ]
}
texCoord TextureCoordinate {
point [ 0 0, 0.333 0, 0.667 0, 1 0, 0 1, 0.333 1, 0.667 1, 1 1, 0.1667 0.5 ]
}
printingRegions [
PrintingRegion {
surfaceThickness 10.0
printingMaterialType [0, 1, 2]
coordIndex [ 2 1 8 -1, 1 0 8 -1, 0 3 8 -1, 3 2 8 -1, 6 5 0 -1, 0 1 6 -1, 5 6 7 -1,
7 4 5 -1 ]
texCoordIndex [5 1 0 4 7 6 2 3 8]
colorTexture ImageTexture { url "./pix/136.png" }
printingMaterialTexture ImageTexture { url "./material/136_material.png" }
}
PrintingRegion {
surfaceThickness 15.0
printingMaterialType [0, 1, 2]
coordIndex [4 3 0 -1, 0 5 4 -1, 1 2 7 -1, 7 6 1 -1, 3 4 7 -1, 7 2 3 -1]
texCoordIndex [4 7 6 5 1 0 3 2]
colorTexture ImageTexture { url "./pix/245.png" }
printingMaterialTexture ImageTexture { url "./material/245_material.png" }
}
]
}
4 © ISO/IEC 2015 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/IEC 14496-16:2011/DAM 3
Before 5 (which shall be renumbered to 6), "Web3D Coding", add:
6 Web3D Coding
6.1 Introduction
This document describes a scene representation using a JSON schema. The reason for choosing JSON is the
native support by modern browsers and easiness of integration with javascript. The JSON schema is used to
connect the object graph elements, MPEG AFX tools, images and shaders. The main components of the
library (Figure X) are the JSON parser and the GraphicsCodec, whereas the GraphicsCodec contains both the
SC3DMC and BBA decoders. The input of the library is the JSON description file. The JSON Parser analyses
its data and calls the appropriate decoders, the SC3DMC decoder fo
...
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