1. Geometry Services for ISO – STEP standards linking product definition, management and visualization in the value chain
Jean Brangé :
Project leader ISO_NP TS 23301
STEP Geometry Services KickOff
April. 24th 2018

2. Would we dare to define 3D visualization ?
entertain
3D visualization as the visual presentation on a screen or another media of graphical and textual 3 dimensional representations of a set of data representing objects, information or results of a computational process in order to:
facilitate capture of the understanding of the object, for visual information sharing with users
and sometimes to promote decision process by a human looking at the data visualized in a medium
objects
learn
information
compare
view
understand
decide
April. 24th 2018
STEP Geometry Services KickOff

3. Visualization in the STEP Framework
Requirements
STEP provides a data model which integrates the whole data landscape for the product development, manufacturing operations and maintenance.
The concept of multiple representations of the product, including multiple geometrical representations allows us to define an optimized visualization model with links to the rest of the data model.
The model based STEP framework allow us to ensure consistency of the integrated information model and the corresponding implementation forms.
metadata
activities &
process planning
documents
simulations
product structures
configuration management
materials
alternate representations
geometry
primitives
PMI
AP242
3D geometry tesselation
B-Reps
CSG 2D
parametric
optimized representation
for visualization
April. 24th 2018
STEP Geometry Services KickOff

4. STEP Geometry Services KickOff
Analysis
Promoting the re-use of the rich integrated STEP data model in the enterprise processes has great value
There is a confirmed opportunity for industry to have a structured approach on 3D product visualisation and to enable integration of product data in visualization application across the life cycle of the product in all the activities of the enterprise.
Use cases exist related with the visualization of product data other that geometry (meta data, production data, financial data ...) 
Need for STEP interfaces for geometry and other STEP data access (OSLC ? MOSSEC approach? )
There is also a need for a simple STEP geometry schema and associated API , with and without PMI (integration with STEP New Architecture ? ) 
Requirements for a STEP AP242 geometry conformance classes using the STEP New Architecture
April. 24th 2018
STEP Geometry Services KickOff

5. Role of STEP in a Product Data visualization framework
3D Printing for training
Use Cases
marketting
Product data navigation
Virtual & augmented reality for Maintenance
3D Scanning
With links to Product data
CAD
+ PDM
+ PLM + Assets
+ ALM
+ …
STEP subset for simple CAD geometry
optimized representation for visualization
STEP IR
Model
translations
AP242 Specific Conformance class LF
selection
Model transformation
STEP tesselation
Language
Transformation ?
Containerization ?
Web services?
Other light Visualization format
"Technology Trend Report on 3D Printing and Scanning"
JAG report to JTC-1 describes numerous standards group, notes many opportunities for cooperation, and recommends JTC-1 leadership through creating a Study Group for collaborating standards.
Is there an opportunity of a JWG on visualization along ISO TC ?
X3D viewer
JT viewer
3D PDF viewer
Collada
Tesselation
Breps
ULP (optimi. Brep-
Canonical
Metadata / PMI
U3D / PRC Tesselation
Breps
Metadata / PMI
Document integration
Tesselation
Canonical primitives
metadata
interactive 3D applications
Tesselation
Breps
Meshes
Kinematics
Morphing
Collision
April. 24th 2018
STEP Geometry Services KickOff

6. STEP Geometry Services KickOff
3D PDF & STEP
Next version of ISO (-3?) PDF will include a container for STEP geometry
The strong liaisons between TC 184/SC 4 and TC 171/SC2 is making this activity much easier.
Ad Hoc group has delivered a report on how to integrate STEP into PDF.
TC 171/SC2 will contribute to the SC 4/WG 16 work.
April. 24th 2018
STEP Geometry Services KickOff

7. STEP Geometry Services KickOff
Proposed workplan T0
T0+6
T0+12
T0+18
T0+24
T0+30
T0+36 IS 1
CD Ballot
DIS Ballot 2 WD 3
CD Ballot
DIS Ballot IS 4
SC4
Beijing
SC4 US
SC4 SE
SC4 FR JT
CD Ballot
Produce an minimal STEP geometry schema for Brep only extracted from schema (specific AP Brep) [6 months]
Develop a reference implementation of an SDAI for the AP Brep with an in-memory data [18 months]
Specify a Dublin Core for CAD (mandatory properties to qualify a geometric model) [12 Months]
Specify a set of services definitions (signatures) to query the above model [12 months]
April. 24th 2018
STEP Geometry Services KickOff