Stereoscopic Segmentation

Hailin Jin
hljin@cs.ucla.edu
UCLA
Stefano Soatto
soatto@ucla.edu
UCLA
Anthony J. Yezzi
ayezzi@ece.gatech.edu
Georgia Institute of Technology
Input image
Estimated shape
Estimated radiance
Project summary
Segmentation, as the name suggests, consists of dividing an image into "regions" that supposedly correspond to portions of the scene that share some common property (for instance, belonging to the same "object" in space). Unfortunately, segmentation from a single image is intrinsically ill-defined, for there is no guarantee that the segmented regions correspond to meaningful objects in space.

In this project, we advance the idea that segmentation can become a well-posed problem when multiple images of the same object (that satisfies suitable conditions on its radiance) are available. Then the "correct" segmentation corresponds uniquely to the three-dimensional shape of the object. Therefore, shape estimation can be posed as the problem of simultaneously segmenting several images of the same object, and viceversa. The practical consequence of this idea is an algorithm, based on a variational principle, that can estimate the three-dimensional shape of objects with smooth radiance or with very dense texture, conditions that render all existing parallax-based reconstruction algorithms useless.

Related publications
Experimental results
Sponsors
This project is supported by NSF grants IIS-0208197 and IIS-9876145, ARO grant DAAD19-99-1-0139, and Intel grant 8029.
2003 Hailin Jin, Stefano Soatto and Anthony J. Yezzi.
Please send your comments to hljin@cs.ucla.edu.
Last updated on January 8, 2004.

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