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CVPR
1999
IEEE
15 years 3 months ago
A Volumetric Stereo Matching Method: Application to Image-Based Modeling
We formulate stereo matching as an extremal surface extraction problem. This is made possible by embedding the disparity surface inside a volume where the surface is composed of v...
Qian Chen, Gérard G. Medioni
SIGGRAPH
1999
ACM
15 years 3 months ago
Tracing Ray Differentials
Antialiasing of ray traced images is typically performed by supersampling the image plane. While this type of filtering works well for many algorithms, it is much more efficient t...
Homan Igehy
ACL
2008
15 years 19 days ago
Regular Tree Grammars as a Formalism for Scope Underspecification
We propose the use of regular tree grammars (RTGs) as a formalism for the underspecified processing of scope ambiguities. By applying standard results on RTGs, we obtain a novel a...
Alexander Koller, Michaela Regneri, Stefan Thater
COLING
1994
15 years 14 days ago
Structure Sharing Problem And Its Solution In Graph Unification
The revised graph unification algorithms presented here are more efficient because they reduce the amount of copying that was necessary because of the assumption that data-structu...
Kiyoshi Kogure
IS
2002
14 years 10 months ago
Pushing extrema aggregates to optimize logic queries
In this paper, we explore the possibility of transforming queries with minimum and maximum predicates into equivalent queries that can be computed more efficiently. The main contr...
Filippo Furfaro, Sergio Greco, Sumit Ganguly, Carl...