TY - GEN
T1 - Perceptual representations of parametrically-defined and natural objects comparing vision and haptics
AU - Gaißert, Nina
AU - Wallraven, Christian
PY - 2010
Y1 - 2010
N2 - Studies concerning how the brain might represent objects by means of a perceptual space have primarily focused on the visual domain. Here we want to show that the haptic modality can equally well recover the underlying structure of a physical object space, forming a perceptual space that is highly congruent to the visual perceptual space. By varying three shape parameters a physical shape space of shell-like objects was generated. Sighted participants explored pictures of the objects while blindfolded participants haptically explored 3D printouts of the objects. Similarity ratings were performed and analyzed using multidimensional scaling (MDS) techniques. Visual and haptic similarity ratings highly correlated and resulted in very similar visual and haptic MDS maps. To investigate to which degree these results are transferrable to natural objects, we performed the same visual and haptic similarity ratings and multidimensional scaling analyses using a set of natural sea shells. Again, we found very similar perceptual spaces in the haptic and visual domain. Our results suggest that the haptic modality is capable of surprisingly acute processing of complex shape.
AB - Studies concerning how the brain might represent objects by means of a perceptual space have primarily focused on the visual domain. Here we want to show that the haptic modality can equally well recover the underlying structure of a physical object space, forming a perceptual space that is highly congruent to the visual perceptual space. By varying three shape parameters a physical shape space of shell-like objects was generated. Sighted participants explored pictures of the objects while blindfolded participants haptically explored 3D printouts of the objects. Similarity ratings were performed and analyzed using multidimensional scaling (MDS) techniques. Visual and haptic similarity ratings highly correlated and resulted in very similar visual and haptic MDS maps. To investigate to which degree these results are transferrable to natural objects, we performed the same visual and haptic similarity ratings and multidimensional scaling analyses using a set of natural sea shells. Again, we found very similar perceptual spaces in the haptic and visual domain. Our results suggest that the haptic modality is capable of surprisingly acute processing of complex shape.
KW - Computer generated objects
KW - Haptics
KW - I.4.10 [image processing and computer vision]: image representation-multidimensional
KW - I.4.7 [image processing and computer vision]: feature measurement feature representation
KW - I.5.3 [pattern recognition]: clustering-similarity measures
KW - Multidimensional scaling
KW - Natural objects
KW - Perceptual space
KW - Vision
UR - http://www.scopus.com/inward/record.url?scp=77952699220&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77952699220&partnerID=8YFLogxK
U2 - 10.1109/HAPTIC.2010.5444683
DO - 10.1109/HAPTIC.2010.5444683
M3 - Conference contribution
AN - SCOPUS:77952699220
SN - 9781424468218
T3 - 2010 IEEE Haptics Symposium, HAPTICS 2010
SP - 35
EP - 42
BT - 2010 IEEE Haptics Symposium, HAPTICS 2010
T2 - 2010 IEEE Haptics Symposium, HAPTICS 2010
Y2 - 25 March 2010 through 26 March 2010
ER -