Retrographic sensing for the measurement of surface texture and shape
Name
Johnson-2009-Retrographic sensing for the measurement of surface texture and shape.pdf
Size
9.84 MB
Format
Adobe PDF
Checksum (MD5)
b47d9c606dddfb02681ace55289d91b8
Author(s)
Adelson, Edward H.
Johnson, Micah K.
Date Issued
August 2009
Journal
IEEE Conference on Computer Vision and Pattern Recognition, 2009. CVPR 2009
Publisher
Institute of Electrical and Electronics Engineers
Citation
Johnson, M.K., and E.H. Adelson. “Retrographic sensing for the measurement of surface texture and shape.” Computer Vision and Pattern Recognition, 2009. CVPR 2009. IEEE Conference on. 2009. 1070-1077. © 2009Institute of Electrical and Electronics Engineers.
Version
Final published version
Abstract
We describe a novel device that can be used as a 2.5D "scanner" for acquiring surface texture and shape. The device consists of a slab of clear elastomer covered with a reflective skin. When an object presses on the skin, the skin distorts to take on the shape of the object's surface. When viewed from behind (through the elastomer slab), the skin appears as a relief replica of the surface. A camera records an image of this relief, using illumination from red, green, and blue light sources at three different positions. A photometric stereo algorithm that is tailored to the device is then used to reconstruct the surface. There is no problem dealing with transparent or specular materials because the skin supplies its own BRDF. Complete information is recorded in a single frame; therefore we can record video of the changing deformation of the skin, and then generate an animation of the changing surface. Our sensor has no moving parts (other than the elastomer slab), uses inexpensive materials, and can be made into a portable device that can be used "in the field" to record surface shape and texture.
MIT Department
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/CVPRW.2009.5206534
