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7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Always get the right size!
Alfred...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
IBV is a private not-for-profit R...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Why kidsize?
Ingredients for size...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Proof-of-concept for Inditex
Why ...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Proof-of-concept for Inditex
Why ...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Why kidsize?
Co-funded by the EC ...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Key developments
body
measuring
i...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Key developments
body
measuring
i...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Key developments
body
measuring
i...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
How does it work?
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Body measuring app
measured in
3D...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Children body shape space
• 800 r...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Children body shape space
PC1
PC2...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Input data
Image
processing
Itera...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Size advice algorithms
• Size rec...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Size advice algorithms
• Size rec...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Size advice algorithms
• Size rec...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
160 children aged 0-12 y.o.
Train...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Ordinal Logistic Regression with ...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Upper bodyLower body Full body
St...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Databases
& APIs
Add-on & iFrame ...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Precision of kidsize app
• 6 3D p...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Kidsize Expert 3D scan
non-
exper...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Kidsize Expert 3D scan
non-
exper...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Accuracy of kidsize app
• 34 chil...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Kidsize vs.
3Dscan
Expert vs.
Exp...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Kidsize vs.
3Dscan
Expert vs.
Exp...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Size advice testing
19 garments
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Size advice reliability
Labelling...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Conclusions
body
measuring
instru...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Conclusions
body
measuring
instru...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Conclusions
body
measuring
instru...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Introduction
Body measuring app
S...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Ongoing work & milestones
 3D bo...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Ongoing work & milestones
 3D bo...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
• FP7-SME-2013-606091. "Developme...
7th Int. Conference on Body Scanning Technologies
1st December 2016, Lugano, Switzerland
Alfredo Ballester
alfredo.ballest...
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Kidsize: always get the right size! @3DBody.Tech 1st Dec 2016

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Kidsize is a proof-of-concept developed by IBV. This presentation describes the two innovations underpinning Kidsize concept and presents the results of their validation. The first one is a mobile phone app to measure a child in 3D by taking two pictures. This new method is more accurate and consistent than an untrained person using a measuring tape at home or in the shop. The second one is an expert system that recommends the size that best fits the child and assesses the fit of the garment at different body areas. Project results show that it can provide nearly 90% right size recommendations, thus outperforming existing methods like age- or height-based size guides, which achieve 40 and 60% right recommendations respectively.

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Kidsize: always get the right size! @3DBody.Tech 1st Dec 2016

  1. 1. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Always get the right size! Alfredo Ballester & Ana Piérola
  2. 2. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland IBV is a private not-for-profit R&D organisation Product design consultancy for manufacturing industries Technology development partner for IT companies and Academia Apparel Sports Transport Health Safety Leisure Appliances Elderly Orthotics Conduction of 3D body scanning surveys Data-driven 3D modelling from scans (3D) images (2D) or body measurements (1D) Data analytics & services (measuring, shape analyses, size advice) Applications & hardware prototyping
  3. 3. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  4. 4. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  5. 5. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Why kidsize? Ingredients for size advice
  6. 6. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Proof-of-concept for Inditex Why kidsize? Brand exp. 41% 21% 64% / 55% Size guide 41% 5% 52% / 43% IBV model 86% 93% 83% / 93% SIZE SELECTION MODEL Fitting percention on body parts Size selection FITTING MOLDEL OF BODY PARTS FITTING PROBABILITY OF KEY AREAS CONTRIBUTION OF FITTING AREAS STAGE 2 SIZE RECOMENDED STAGE 1 FITTING PREDICTION ON KEY BODY PARTS Body measurements Garment sizes
  7. 7. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Proof-of-concept for Inditex Why kidsize? Brand exp. 41% 21% 64% / 55% Size guide 41% 5% 52% / 43% IBV model 86% 93% 83% / 93% SIZE SELECTION MODEL Fitting percention on body parts Size selection FITTING MOLDEL OF BODY PARTS FITTING PROBABILITY OF KEY AREAS CONTRIBUTION OF FITTING AREAS STAGE 2 SIZE RECOMENDED STAGE 1 FITTING PREDICTION ON KEY BODY PARTS Body measurements Garment sizes • Bodies measured with Vitus XXL scanner • All garments and sizes measured by hand • Single garment models trained with fit trials
  8. 8. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Why kidsize? Co-funded by the EC (2013-2016) Grant Agreement no. 606091 Industry Promoters DemonstratorsDevelopers
  9. 9. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Key developments body measuring instrument
  10. 10. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Key developments body measuring instrument Size advice & fit prediction algorithms
  11. 11. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Key developments body measuring instrument Size advice & fit prediction algorithms
  12. 12. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland How does it work?
  13. 13. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  14. 14. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Body measuring app measured in 3D by taking two photographs estimated by linear regression from gender-age-weight-height 0 to 3 y.o. 3 to 12 y.o.
  15. 15. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Children body shape space • 800 registered 3D body scans of children • Harmonised in posture • PA + PCA to synthesise • Shape & postural body descriptors • Affordable no. of parameters
  16. 16. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Children body shape space PC1 PC2 PC3 PC60 …. • 800 registered 3D body scans of children • Harmonised in posture • PA + PCA to synthesise • Shape & postural body descriptors • Affordable no. of parameters
  17. 17. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Input data Image processing Iterative optimisation Data extraction How it works
  18. 18. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  19. 19. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Size advice algorithms • Size recommended to wear it straight away → Expert’s advice • Best fit to allow room for the child to grow → Parents’ advice • Fit at different body areas → Traffic Lights    
  20. 20. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Size advice algorithms • Size recommended to wear it straight away → Expert’s advice • Best fit to allow room for the child to grow → Parents’ advice • Fit at different body areas → Traffic Lights    
  21. 21. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Size advice algorithms • Size recommended to wear it straight away → Expert’s advice • Best fit to allow room for the child to grow → Parents’ advice • Fit at different body areas → Traffic Lights    
  22. 22. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland 160 children aged 0-12 y.o. Training data NECK OPENING CHEST WAIST CONTOUR HIP CONTOUR SHOULDER WIDTH TOTAL LENGTH ARMHOLE BACK WIDTH Over 1100 fit trials Key body fitting areas WAIST CONTOUR HIP CONTOUR THIGH CONTOUR FRONT RISE KNEE CONTOUR BACK RISE TROUSERS LENGTH TROUSERS CUFF
  23. 23. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Ordinal Logistic Regression with Stepwise variable selection 𝑙𝑜𝑔𝑖𝑡 𝑃 𝑓𝑖𝑡 ≤ 𝐴|𝑋1, … , 𝑋𝑘 = ln 𝑃 𝑓𝑖𝑡 ≤ 𝐴|𝑋1, … , 𝑋𝑘 1 − 𝑃 𝑓𝑖𝑡 ≤ 𝐴|𝑋1, … , 𝑋𝑘 = 𝜃𝐴 | 𝐴+1 − 𝛽1 𝑋1 + ⋯ + 𝛽𝑘 𝑋𝑘 , 𝐴 ∈ 𝑠𝑚𝑎𝑙𝑙, 𝑔𝑜𝑜𝑑, 𝑙𝑎𝑟𝑔𝑒 ∶ 𝑠𝑚𝑎𝑙𝑙 ≤ 𝑔𝑜𝑜𝑑 ≤ 𝑙𝑎𝑟𝑔𝑒 𝑃 𝑓𝑖𝑡 = 𝑠𝑚𝑎𝑙𝑙 | 𝑋1, … , 𝑋 𝑘 = 𝑒 𝜃 𝑠𝑚𝑎𝑙𝑙 | 𝑔𝑜𝑜𝑑 − 𝛽1 𝑋1+⋯+𝛽 𝑘 𝑋 𝑘 𝑃 𝑓𝑖𝑡 = 𝑔𝑜𝑜𝑑 | 𝑋1, … , 𝑋 𝑘 = 𝑒 𝜃 𝑔𝑜𝑜𝑑 | 𝑙𝑎𝑟𝑔𝑒 − 𝛽1 𝑋1+⋯+𝛽 𝑘 𝑋 𝑘 − 𝑃 𝑓𝑖𝑡 = 𝑠𝑚𝑎𝑙𝑙 | 𝑋1, … , 𝑋 𝑘 𝑃 𝑓𝑖𝑡 = 𝑙𝑎𝑟𝑔𝑒 | 𝑋1, … , 𝑋 𝑘 = 1 − 𝑃 𝑓𝑖𝑡 = 𝑠𝑚𝑎𝑙𝑙 | 𝑋1, … , 𝑋 𝑘 − 𝑃(𝑓𝑖𝑡 = 𝑔𝑜𝑜𝑑 | 𝑋1, … , 𝑋 𝑘) Fit modelling • Pick biggest size with good fit • If between sizes → Pick larger • If all big or all small → No size available • Consistency expert-parent → Expert  Parent Decision rules for picking a size from probabilities
  24. 24. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Upper bodyLower body Full body Stepwise selection of variables for final models Height Knee heightCervical height Mid neck girthChest girth Waist girth Hip girth Back armpits contour Height Cervical height Hip girth Belly girth Head girth Wrist girth Thigh girth Chest girth Mid neck girth Fit modelling Expert advice Parents advice Fit-by- area    
  25. 25. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  26. 26. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Databases & APIs Add-on & iFrame for e-commerce 3D reconstruction engine Mobile App for parents Size recommendation engine FRONTENDBACKEND Back-offices for producers & e-retailers Prototypes for testing
  27. 27. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Precision of kidsize app • 6 3D printed children figurines in 1:10 scale • Each figurine measured with the app 10 times • Body measurements digitally obtained from 3D reconstructions • Mean Absolute Difference (MAD) calculated for each measurement 𝑀𝐴𝐷 = 1 𝑛 1 𝑟 𝑖 2 𝑚 𝑠 𝑖 − 𝑚𝑡 𝑖 𝑟 𝑖 𝑡=𝑠+1 𝑟 𝑖−1 𝑠=1𝑖
  28. 28. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Kidsize Expert 3D scan non- expert Cervical height 3 (0%) 2 3 Knee height 3 (1%) 2 3 Mid neck girth 5 (2%) 3 4 6 Neck base girth 5 (2%) 3 6 Shoulder length 5 (5%) 2 3 Chest girth 8 (1%) 7 7 Back Armpits Contour 6 (2%) 6 7 Waist girth 8 (1%) 5 5 19 Seat girth 6 (1%) 4 5 10 Arm length 6 (1%) 4 7 Outside leg length 5 (1%) 3 5 Thigh girth 5 (1%) 3 2 Knee girth 3 (1%) 3 2 Precision (MAD in mm)
  29. 29. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Kidsize Expert 3D scan non- expert Cervical height 3 (0%) 2 3 Knee height 3 (1%) 2 3 Mid neck girth 5 (2%) 3 4 6 Neck base girth 5 (2%) 3 6 Shoulder length 5 (5%) 2 3 Chest girth 8 (1%) 7 7 Back Armpits Contour 6 (2%) 6 7 Waist girth 8 (1%) 5 5 19 Seat girth 6 (1%) 4 5 10 Arm length 6 (1%) 4 7 Outside leg length 5 (1%) 3 5 Thigh girth 5 (1%) 3 2 Knee girth 3 (1%) 3 2 Precision (MAD in mm)
  30. 30. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Accuracy of kidsize app • 34 children aged 3-12 y.o. • Each child was scanned with 3D scanner (Vitus XXL) and with the app • Body measurements digitally obtained from 3D reconstructions • Mean Absolute Difference (MAD) calculated for each measurement 𝑀𝐴𝐷 = 1 𝑛 𝑚 𝐾𝑖𝑑𝑠𝑖𝑧𝑒 𝑖 − 𝑚3𝐷𝑠𝑐𝑎𝑛 𝑖 𝑖
  31. 31. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Kidsize vs. 3Dscan Expert vs. Expert* 3Dscan vs. Expert Non-expert vs. Expert Cervical height 11 (1%) 7 8 50 Knee height 10 (3%) 6 Mid neck girth 11 (4%) 6 13 19 Neck base girth 11 (3%) 11 17 19 Shoulder length 14 (13%) 4 13 26 Chest girth 21 (3%) 15 19 24 Back Armpits Contour 20 (7%) 10 8 65 Waist girth 18 (3%) 11 20 24 Seat girth 12 (2%) 12 10 57 Arm length 13 (3%) 6 21 32 Outside leg length 13 (2%) 13 11 Thigh girth 14 (4%) 6 36 Knee girth 8 (3%) 4 18 Accuracy (MAD in mm)
  32. 32. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Kidsize vs. 3Dscan Expert vs. Expert* 3Dscan vs. Expert Non-expert vs. Expert Cervical height 11 (1%) 7 8 50 Knee height 10 (3%) 6 Mid neck girth 11 (4%) 6 13 19 Neck base girth 11 (3%) 11 17 19 Shoulder length 14 (13%) 4 13 26 Chest girth 21 (3%) 15 19 24 Back Armpits Contour 20 (7%) 10 8 65 Waist girth 18 (3%) 11 20 24 Seat girth 12 (2%) 12 10 57 Arm length 13 (3%) 6 21 32 Outside leg length 13 (2%) 13 11 Thigh girth 14 (4%) 6 36 Knee girth 8 (3%) 4 18 Accuracy (MAD in mm) 3D scan kidsize 3D scan kidsize 3D scan kidsize 3D scan kidsize 3D scan kidsize 3D scan kidsize
  33. 33. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Size advice testing 19 garments Subjective assessment Interview with retailers ‘Think aloud’ with parents Objective assessment Kidsize vs. parents’ choice based on real try-on Locations Bóboli shop IBV Lab Participants 30 children Aged 0-12 y.o. (23 parents)
  34. 34. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Size advice reliability Labelling (age) Size guide (stature) Kidsize Expert 42% 54% 85% Parents 48% 59% 88%
  35. 35. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  36. 36. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Conclusions body measuring instrument Size advice & fit prediction algorithms
  37. 37. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Conclusions body measuring instrument Size advice & fit prediction algorithms
  38. 38. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Conclusions body measuring instrument Size advice & fit prediction algorithms
  39. 39. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Introduction Body measuring app Size advice algorithms Validation & results Conclusions Ongoing work
  40. 40. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Ongoing work & milestones  3D body reconstruction of adults  Robustness of segmentation algorithms
  41. 41. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Ongoing work & milestones  3D body reconstruction of adults  Robustness of segmentation algorithms  Improvement of 2D3D reconstruction  Validation of app with 200 adults  Health risk indicators  3D body reconstruction from RGB-D shots  Size advice for footwear
  42. 42. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland • FP7-SME-2013-606091. "Development of a new extended product-service to overcome size assignment and fitting barriers for children fashion on-line market addressing customer needs" (KidSize), FP7, EC • Alemany, et al. (2013). A Exploitation of 3D body databases to improve size selection on the apparel industry, 4th Int Conf on 3D Body Scanning Technologies, Long Beach, CA, USA, November 2013 • Ballester et al. (2014). 3D-based resources fostering the analysis, use, and exploitation of available body anthropometric data. 5th Int Conf on 3D Body Scanning Tech, Hometrica Consulting, Lugano, Switzerland • Barrios et al. (2016). Reliability and criterion validity of self-measured waist, hip, and neck circumferences. BMC Medical Research Methodology, 16(1) • Bradtmiller & Gross (1999). 3D Whole Body Scans: Measurement Extraction Software Validation. • Dekker (2000). 3D human body modelling from range data (Doctoral). University of London. • Gordon et al. (1989). 1988 Anthropometric Survey of US Army Personnel-Methods and Summary Statistics • Han et al. (2010). Comparative analysis of 3D body scan measurements and manual measurements of size Korea adult females. International Journal of Industrial Ergonomics, 40(5), 530-540 • Lu & Wang (2010). The Evaluation of Scan-Derived Anthropometric Measurements. IEEE Transactions on Instrumentation and Measurement, 59(8), 2048-2054 • Parrilla et al. (2015). Low-cost 3D foot scanner using a mobile app. Footwear Science, 7(sup1), S26–S28 • Robinette & Daanen (2006). Precision of the CAESAR scan-extracted measurements. Appl Erg, 37(3), 259-265 • Yoon & Radwin (1994). The accuracy of consumer-made body measurements for women’s mail-order clothing. Human Factors: The Journal of the Human Factors and Ergonomics Society, 36(3), 557–568 References
  43. 43. 7th Int. Conference on Body Scanning Technologies 1st December 2016, Lugano, Switzerland Alfredo Ballester alfredo.ballester@ibv.upv.es Ana Piérola ana.pierola@ibv.upv.es Sandra Alemany Eduardo Parrilla Jordi Uriel Cristina Pérez Paola Piqueras Beatriz Nácher Clara Solves Julio Vivas Silvia San Jerónimo Juan C. González anthropometry.ibv.org www.kidsizesolution.com Thank you !

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