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  Can I recognize my body's weight? The influence of shape and texture on the perception of self

Piryankova, I., Stefanucci, J. K., Romero, J., de la Rosa, S., Black, M. J., & Mohler, B. (2014). Can I recognize my body's weight? The influence of shape and texture on the perception of self. ACM Transactions on Applied Perception, 11(3): 13, 1-18.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-7FD3-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2CDE-5
Genre: Conference Paper

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 Creators:
Piryankova, Ivelina1, 2, Author              
Stefanucci, Jeanine K, Author              
Romero, Javier3, Author              
de la Rosa, S2, 4, Author              
Black, Michael J.3, Author              
Mohler, BJ1, 2, Author              
Affiliations:
1Research Group Space and Body Perception, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528693              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
3Dept. Perceiving Systems, Max Planck Institute for Intelligent Systems, Max Planck Society, ou_1497642              
4Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              

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 Abstract: The goal of this research was to investigate women's sensitivity to changes in their perceived weight by altering the body mass index (BMI) of the participants' personalized avatars displayed on a large-screen immersive display. We created the personalized avatars with a full-body 3D scanner that records the participants' body geometry and texture. We altered the weight of the personalized avatars to produce changes in BMI while keeping height, arm length, and inseam fixed and exploited the correlation between body geometry and anthropometric measurements encapsulated in a statistical body shape model created from thousands of body scans. In a 2 ⁽×⁾ 2 psychophysical experiment, we investigated the relative importance of visual cues, namely shape (own shape vs. an average female body shape with equivalent height and BMI to the participant) and texture (own photo-realistic texture or checkerboard pattern texture) on the ability to accurately perceive own current body weight (by asking the participant, ldquo;Is it the same weight as you?rdquo;). Our results indicate that shape (where height and BMI are fixed) had little effect on the perception of body weight. Interestingly, the participants perceived their body weight veridically when they saw their own photo-realistic texture. As compared to avatars with photo-realistic texture, the avatars with checkerboard texture needed to be significantly thinner in order to represent the participants' current weight. This suggests that in general the avatars with checkerboard texture appeared bigger. The range that the participants accepted as their own current weight was approximately a 0.83% to minus; 6.05% BMI change tolerance range around their perceived weight. Both the shape and the texture had an effect on the reported similarity of the body parts and the whole avatar to the participant's body. This work has implications for new measures for patients with body image disorders, as well as researchers interested in creating personalized avatars for games, training applications, or virtual reality.

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 Dates: 2014-09
 Publication Status: Published in print
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 Identifiers: DOI: 10.1145/2641568
ISBN: 978-1-4503-3009-1
BibTex Citekey: PiryankovaSRdBM2014_2
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Title: ACM Symposium on Applied Perception (SAP '14)
Place of Event: Vancouver, Canada
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Title: ACM Transactions on Applied Perception
Source Genre: Journal
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Pages: - Volume / Issue: 11 (3) Sequence Number: 13 Start / End Page: 1 - 18 Identifier: -