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SSDBM
2002
IEEE
128views Database» more  SSDBM 2002»
15 years 2 months ago
Compressing Bitmap Indexes for Faster Search Operations
In this paper, we study the effects of compression on bitmap indexes. The main operations on the bitmaps during query processing are bitwise logical operations such as AND, OR, N...
Kesheng Wu, Ekow J. Otoo, Arie Shoshani
PVLDB
2010
151views more  PVLDB 2010»
14 years 8 months ago
Database Compression on Graphics Processors
Query co-processing on graphics processors (GPUs) has become an effective means to improve the performance of main memory databases. However, this co-processing requires the data ...
Wenbin Fang, Bingsheng He, Qiong Luo
ICIP
2000
IEEE
15 years 11 months ago
Enhancement of Compressed Video Using Visual Quality Measurements
The enhancement of compressed video is considered. We present a general algorithm for processing the compressed data, with three variants of the algorithm having practical applica...
C. Andrew Segall, Aggelos K. Katsaggelos
EVOW
2007
Springer
15 years 4 months ago
Overcompressing JPEG Images with Evolution Algorithms
Abstract. Overcompression is the process of post-processing compressed images to gain either further size reduction or improved quality. This is made possible by the fact that the ...
Jacques Lévy Véhel, Franklin Mendivi...
DCC
2010
IEEE
15 years 1 months ago
A Fast Compact Prefix Encoding for Pattern Matching in Limited Resources Devices
This paper improves the Tagged Suboptimal Codes (TSC) compression scheme in several ways. We show how to process the TSC as a universal code. We introduce the TSCk as a family of ...
S. Harrusi, Amir Averbuch, N. Rabin