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BCI
2009
IEEE
16 years 21 days ago
On the Performance of SVD-Based Algorithms for Collaborative Filtering
—In this paper, we describe and compare three Collaborative Filtering (CF) algorithms aiming at the low-rank approximation of the user-item ratings matrix. The algorithm implemen...
Manolis G. Vozalis, Angelos I. Markos, Konstantino...
TOG
2008
178views more  TOG 2008»
15 years 5 months ago
Edge-preserving decompositions for multi-scale tone and detail manipulation
Many recent computational photography techniques decompose an image into a piecewise smooth base layer, containing large scale variations in intensity, and a residual detail layer...
Zeev Farbman, Raanan Fattal, Dani Lischinski, Rich...
ICIP
1999
IEEE
16 years 7 months ago
Computing Isotropic Local Contrast from Oriented Pyramid Decompositions
Working with contrast instead of luminance can facilitate numerous image processing and analysis tasks. Unfortunately, a common definition of contrast suitable for all situations ...
Stefan Winkler, Pierre Vandergheynst
WEA
2010
Springer
311views Algorithms» more  WEA 2010»
16 years 22 days ago
Geometric Minimum Spanning Trees with GeoFilterKruskal
Let P be a set of points in Rd . We propose GEOFILTERKRUSKAL, an algorithm that computes the minimum spanning tree of P using well separated pair decomposition in combination with ...
Samidh Chatterjee, Michael Connor, Piyush Kumar
DICTA
2003
15 years 7 months ago
Image Ownership Verification via Private Pattern and Watermarking Wavelet Filters
Abstract. In this paper, we propose a watermarking scheme for the image ownership verification in terms of a private key pattern and wavelet filters. The watermarking is mainly ach...
Zhuan Qing Huang, Zhuhan Jiang