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ICISC
2009
146views Cryptology» more  ICISC 2009»
14 years 9 months ago
First CPIR Protocol with Data-Dependent Computation
We design a new (n, 1)-CPIR protocol BddCpir for -bit strings as a combination of a noncryptographic (BDD-based) data structure and a more basic cryptographic primitive (communicat...
Helger Lipmaa
ACL
2011
14 years 3 months ago
Discovering Sociolinguistic Associations with Structured Sparsity
We present a method to discover robust and interpretable sociolinguistic associations from raw geotagged text data. Using aggregate demographic statistics about the authors’ geo...
Jacob Eisenstein, Noah A. Smith, Eric P. Xing
ECCV
2008
Springer
16 years 1 months ago
Flexible Depth of Field Photography
The range of scene depths that appear focused in an image is known as the depth of field (DOF). Conventional cameras are limited by a fundamental trade-off between depth of field a...
Hajime Nagahara, Sujit Kuthirummal, Changyin Zhou,...
CVIU
2006
168views more  CVIU 2006»
14 years 12 months ago
Fitting conics to paracatadioptric projections of lines
The paracatadioptric camera is one of the most popular panoramic systems currently available in the market. It provides a wide field of view by combining a parabolic shaped mirror...
João P. Barreto, Helder Araújo
CVPR
2012
IEEE
13 years 2 months ago
A theory of multi-layer flat refractive geometry
Flat refractive geometry corresponds to a perspective camera looking through single/multiple parallel flat refractive mediums. We show that the underlying geometry of rays corres...
Amit Agrawal, Srikumar Ramalingam, Yuichi Taguchi,...