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PR
2002
202views more  PR 2002»
13 years 8 months ago
Illumination color covariant locale-based visual object retrieval
Search by Object Model -- finding an object inside a target image -- is a desirable and yet difficult mechanism for querying multimedia data. An added difficulty is that objects c...
Mark S. Drew, Ze-Nian Li, Zinovi Tauber
IMAGING
2003
13 years 9 months ago
Illuminant and Device Invariance Using Histogram Equalisation
In this paper we propose a new device and illumination invariant image representation based on an existing greyscale image enhancement technique: histogram equalisation. Our metho...
Graham D. Finlayson, Steven D. Hordley, Gerald Sch...
ECCV
2004
Springer
14 years 10 months ago
On the Significance of Real-World Conditions for Material Classification
Classifying materials from their appearance is a challenging problem, especially if illumination and pose conditions are permitted to change: highlights and shadows caused by 3D st...
Eric Hayman, Barbara Caputo, Mario Fritz, Jan-Olof...
PAMI
2002
122views more  PAMI 2002»
13 years 8 months ago
Analytic PCA Construction for Theoretical Analysis of Lighting Variability in Images of a Lambertian Object
We analyze theoretically the subspace best approximating images of a convex Lambertian object taken from the same viewpoint, but under different distant illumination conditions. Si...
Ravi Ramamoorthi
ICCV
1998
IEEE
14 years 10 months ago
Modeling Geometric Structure and Illumination Variation of a Scene from Real Images
We present in this paper a system which automatically builds, from real images, a scene model containing both 3D geometric information of the scene structure and its photometric...
Zhengyou Zhang