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ICIP
2010
IEEE
15 years 2 months ago
The 2D orientation is unique through principal moments analysis
When comparing 2D shapes, a key issue is their normalization. Translation and scale are easily taken care of by removing the mean and normalizing the energy. However, defining and...
João F. P. Crespo, Pedro M. Q. Aguiar
ICPR
2010
IEEE
15 years 2 months ago
Improving SIFT-based Descriptors Stability to Rotations
Image descriptors are widely adopted structures to match image features. SIFT-based descriptors are collections of gradient orientation histograms computed on different feature re...
Fabio Bellavia, Domenico Tegolo, Emanuele Trucco
IMC
2010
ACM
15 years 2 months ago
Challenges in measuring online advertising systems
Online advertising supports many Internet services, such as search, email, and social networks. At the same time, there are widespread concerns about the privacy loss associated w...
Saikat Guha, Bin Cheng, Paul Francis
KDD
2010
ACM
326views Data Mining» more  KDD 2010»
15 years 2 months ago
Document clustering via dirichlet process mixture model with feature selection
One essential issue of document clustering is to estimate the appropriate number of clusters for a document collection to which documents should be partitioned. In this paper, we ...
Guan Yu, Ruizhang Huang, Zhaojun Wang
MOBIHOC
2010
ACM
15 years 2 months ago
Detecting intra-room mobility with signal strength descriptors
We explore the problem of detecting whether a device has moved within a room. Our approach relies on comparing summaries of received signal strength measurements over time, which ...
Konstantinos Kleisouris, Bernhard Firner, Richard ...