1987 search results - page 354 / 398 » Directional filtering transform |
120
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ECCV
2002
Springer
16 years 3 months ago
2002
Springer
We present a novel method for inferring three-dimensional shape from a collection of defocused images. It is based on the observation that defocused images are the null-space of ce...
105
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ICIP
2006
IEEE
16 years 3 months ago
2006
IEEE
We propose an integral image based algorithm to extract feature covariance matrices of all possible rectangular regions within a given image. Covariance is an essential indicator ...
138
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ICIP
2003
IEEE
16 years 3 months ago
2003
IEEE
We present algorithms for automatic feature selection for unsupervised structure discovery from video sequences. Feature selection in this scenario is hard because of the absence ...
228
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ICDE
2004
IEEE
16 years 3 months ago
2004
IEEE
Signatures detect changes to the data objects. Numerous schemes a known, e.g., the popular hash based SHA-1 standard. We propose a nov scheme we call algebraic signatures. We use ...
107
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ICPR
2004
IEEE
16 years 3 months ago
2004
IEEE
The bidirectional texture function (BTF) describes texture appearance variations due to varying illumination and viewing conditions. This function is acquired by large number of m...