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Modeling moving and deforming objects requires capturing as much information as possible during a very
 

Summary: Abstract
Modeling moving and deforming objects requires
capturing as much information as possible during a very
short time. When using off-the-shelf hardware, this often
hinders the resolution and accuracy of the acquired model.
Our key observation is that in as little as four frames both
sparse surface-positional measurements and dense
surface-orientation measurements can be acquired using a
combination of structured light and photometric stereo,
resulting in high-resolution models of moving and
deforming objects. Our system projects alternating
geometric and photometric patterns onto the object using a
set of three projectors and captures the object using a
synchronized camera. Small motion among temporally
close frames is compensated by estimating the optical flow
of images captured under the uniform illumination of the
photometric light. Then spatial-temporal photogeometric
reconstructions are performed to obtain dense and
accurate point samples with a sampling resolution equal to
that of the camera. Temporal coherence is also enforced.

  

Source: Aliaga, Daniel G. - Department of Computer Sciences, Purdue University

 

Collections: Computer Technologies and Information Sciences