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EUROFIT project:Integration, Homogenisation and Extension of the Scope of Anthropometric Data Pools for Product Development

Sandra Alemany (IBV)

FP7‐ICT‐2011‐SME‐DCL SME initiative on Digital Content and Languages

G.A. No.: 296116

PROJECT OVERVIEW

PROJECT RESULTS3D harmonisation1D to 3D enhancementShape Analysis testsPrototypes 2013

NEXT STEPS

EUROFIT project: overview and first results4th ICE 3D Body Scanning Technologies, Long Beach, CA, USA, 19‐20 Nov 2013

EUROFIT OVERVIEW

EUROFIT is an joint initiative co‐fundedby the European Commission aimed at:

Fostering the global trade of Digital Anthropometric Data

Opening the use of 3D anthropometry to product design

Supporting SMEs to enter international markets

“EUROFIT vision is to unleash the huge potential contained in the increasing number of databases of 3D body scans for the

European consumer goods’ industries”

What is EUROFIT?


• Huge Digital Anthropometric Data available now – both 1D and 3D

• Much more data will be generatedin the following years

3D data exists but3D exploitation is

NOT AVAILABLE to industry

• Few tools for industrial application of 1D data to consumer goods’ industries

EUROFIT OVERVIEWWhy EUROFIT?


# Harmonisation of 3D scan data that enables cross‐data analyses

# 3D enhancing of existing 1D databases

# Implementation of 3D shape analysis methods

# Making 3D data available, usable and affordable to industry

# Assuring the long‐term sustainability of 3D data trade platform

# Attracting third party contributors (beyond project)

EUROFIT OVERVIEWMain S&T challenges


OPTIMIZE SIZING & FITTING of productssatisfying DIFFERENT REGIONAL MARKETS

PERSONAL PROTECTIVE EQUIPMENT

Protective clothing

FASHIONShirts & Blouses

NONINVASIVE ORTHOPAEDICS

Knee bracing

EUROFIT OVERVIEWOur Industrial Application Cases


Partner Country Type Role

Spain RTO Coordiantor & Core Developer

Germany SME Core Developer

Greece SME Core Developer

Iceland LE Industry end‐user(Noninvasive Orthopaedics)

Spain LE Industry end‐user(Personal protective equipment)

Germany SME Industry end‐user(Fashion shirts & blouses)

EUROFIT OVERVIEWOur international consortium


EUROFIT OVERVIEWConcept overview


EUROFIT OVERVIEWData enhancement concept

Shapeinformation

lost


Homology

Point‐to‐point correspondence that

• enables interpolation of shapes

• enables statistical analyses

• enables fast body part selections

PROJECT RESULTS – 3D harmonisationBasis of the approach followed

Homologous mesh structure – Homodel

• Single mesh of 50K vertices and 99K faces

• Key anatomical landmarks associated to vertices

• Master semantic edges enabling body part focus

• Skeleton enabling posture corrections


PROJECT RESULTS – 3D harmonisationProcess overview

Raw Scan Pre‐processed Mesh

SCANPRE‐PROCESSING

HOMODELCREATION

Homodel

• Hole filling• Single surface reconstruction• Removal of noise

• Same homologous mesh structure• Anatomical correspondence• Slit area correction


PROJECT RESULTS – 3D harmonisationPre‐processing of raw scans

• Holes in surface• Multiple layers• Noise in surface• Physical markers• ...

Hole‐filling

Poison’s reconstruction plus surface fairing

Physical marker removal

Poison’s reconstruction plus surface fairing

Identification of artificially completed area, especially those with low reliability (slit areas)

Single SurfaceReconstruction


TEMPLATE‐BASED HOMODEL CREATION

SUBDIVISION‐BASED HOMODEL CREATION

PROJECT RESULTS – 3D harmonisationHomodel creation from 3D scans

Video 1 Video 2

Raw scantarget Template

Posed & Scaled

TemplateFitted

Homodel

Fitting of a template mesh equipped with a skeleton to a 3D scan using a set of anatomical references.

Made in three automated steps:

• Template posing and scaling• Template fitting to scan surface• Post processing of slit areas

Fitting the scan with a coarse mesh defined by a fixed set of anatomical references. The coarse mesh is progressively broken down to fit the scan surface. It requires higher and fix number of landmarks and a finer slit modelling prior to the fitting but can achieve a higher quality (<0.04mm).It requires a final conversion to the homologous structure.


PROJECT RESULTS – 1D to 3DHomodel creation from 1D measurement data

Representative3D+1D Database

(500‐900 homodels + measurements)

1D data

Shape synthesis through 30‐200

Principal Components

Regression model relating 3D shape components to measurements

Step 0:Input of a list of measurements from any source (tape, caliper or digital)

Step 1:Approx. shape obtained from the model

Step 2:Iterative measurement & optimisation until all measurements are matched


Video 1 Video 2

PROJECT RESULTS – 1D to 3DHomodel creation from 1D measurement data

Up to3cmerror

Nearlyzeroerror


PROJECT RESULTS – Shape AnalysisProduct design tools in knee bracing (I)

MODE 1 (60%)Lenghts

+8” thigh girth

MODE 2 (20%)GirthsWidths

MODE 3 (7%)Hiperflexion(sagittal angle)

MODE 6 (2%)Varus‐valgus(frontal angle)

MODES 4&5 (6%)Leg opening

noise

MODES 7‐10 (2%)Thigh‐calf

discrepancies

PCA analysis on female sample data

97% of variance explained in 10 dimensions

independent shape variations identified

KEY POTENTIAL MODES FOR SHAPE BASED SIZING


PROJECT RESULTS – Shape AnalysisProduct design tools in female trousers (I)


96% of variance explained in 10 dimensions

independent shape variations identified

KEY POTENTIAL MODES FOR SHAPE BASED SIZING

MODE 1 (51%)Leg opening

MODE 2 (20%)Lower body Heights

MODE 3 (8%)Lower body

girths

MODE 4 (2%)Hyperflexion

MODES 5&9 (2%)Girth discrepancies

MODE 6 (1%)Knee varus‐valgus


PROJECT RESULTS – Shape AnalysisProduct design tests in knee bracing (II)


3D statistical mannequins fror an OA product and a ligament product

1D to 3D inference based on 1 measurement (size allocation measurement)

XS S M L XL S M L XL XXL

Based on calf girth 6” below patella Based on knee width

UNLOADER® Series (Osteoartritis) CTI® Series (Ligament Injury)


PROJECT RESULTS – Shape AnalysisProduct design tests in female trousers (II)

Different 3D Statistical avatars for size 42 depending on the lower body morphotype

Automated digital measurementextraction fromstat. avatars

Measurementsused for thecreation of stat. avatars


PROJECT RESULTS – Shape AnalysisPosture correction and PCA

Automated fitting of a skeleton to Homodels

Automated posture alignment using inverse kinematics

Bodyheight

Bodymass

Limbs’ lenght

Effects in PCA results with full bodies

Reuduction of the main noise due to posture


PROJECT RESULTS – Prototypes 2013Pre‐commercial products

At present we are near to the end of development phase (Jan 2014)

3 pre‐commercial products are already available (Released Nov 2013):

1. EUROFIT Portal V2

2. External Shape Analysis web Services (accessible throug the portal)

3. Avatar Studio (stand alone local computer software)


PROJECT RESULTS – Prototypes 2013EUROFIT portal

New architecture enabling:• Distributed services and• Databases

Upgrade of the iSize portal (portal.i‐size.net) to new 3D functionalities and Data:• Body part selection• Mean avatar creation• Shape Analysis

(External service)

3D databases already available:• Germany• Spain (only females)• US (1D data enhanced to 3D)• China (1D data enhanced to 3D)


Data volumes of 3D shape data representations

3D Scan Homodel PCA Compress 1

PCA Compress 2

PCA Compress 3

3D Scan based representation of an individual

- Data points per individual 500.000 50.000

- Data size per point (Bytes) 12 12

- Data size per individual (kBytes) 6.000 600

PCA based representation of an individual

- Number of used eigenshapes (modes) 100 50 20

- Data size of eigenshapes (kBytes) 60.000 30.000 12.000

- Score values per individual 100 50 20

- Data size score values per individual (Bytes) 400 200 80

Representation of a target group

- Size of selected target group 1.000 1.000 1.000 1.000 1.000

- Total data size (MBytes) 6.000 600 60,4 30,2 12,08

Compression rates 100% 10% 1,01% 0,50% 0,20%

PROJECT RESULTS – Prototypes 2013EUROFIT portal

PCA‐based data compression enabling distributed services and databases


PROJECT RESULTS – Prototypes 2013Online Shape Analysis Services

https://ws1.hypercliq.com

Sample data analyses and 3D interactive features can be tested at:

Full 3D shape Analysis features:

Interactive 3D visualisation of Principal Components of Shape

Interactive 3D visualisation of errors maps

Measurement correlations with Principal Components of Shape


PROJECT RESULTS – Prototypes 2013Stand Alone Avatar Studio Software

• Interactive creation of full body digital mannequins (avatars) from measurements

• Possibility for exportingstatic digital models in standing posture toVydia and to standard formats


NEXT STEPSFrom Nov 2013 to May 2014

Usability testing by product manufacturers and refinement of prototypes (Nov 2013 – Jan 2014)

Jan2014

Demonstration period including the design and manufacture of new products using EUROFIT tools (Jan 2014 – May 2014)

May2014

Final EUROFIT portal prototype expected June 2014June2014

Commercial upgrade of i‐Size expected beginning 20152015


NEXT STEPSRequest for scientific & industrial collaborations

• Entities owning anthropometric databases (either 1D or 3D) interested in testing data harmonisation or treatment tools: Harmonisation, completion, or cleaning 3D databases

Enhancement of 1D data to 3D data

• Companies developing and/or manufacturing consumer goods which added value, success or functionality depends on an adequate ergonomic/anthropometric design Testing current product design tools & methods

Extending our current use cases to further applications/sectors


Any Questions?


Thanks!

Sandra Alemany Mut

[email protected]

www.eurofit‐project.eu