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ICFP
2004
ACM
16 years 6 months ago
Numbering matters: first-order canonical forms for second-order recursive types
We study a type system equipped with universal types and equirecursive types, which we refer to as F?. We show that type equality may be decided in time O(n log n), an improvement...
François Pottier, Nadji Gauthier
PERCOM
2008
ACM
16 years 6 months ago
Cardinality Estimation for Large-scale RFID Systems
Counting or estimating the number of tags is crucial for large-scale RFID systems. The use of multiple readers was recently proposed to improve the efficiency and effectiveness in ...
Chen Qian, Hoilun Ngan, Yunhao Liu
DCC
2007
IEEE
16 years 6 months ago
Image Coding on Quincunx Lattice with Adaptive Lifting and Interpolation
Considering that quincunx lattice is a more efficient spatial sampling scheme than square lattice, we investigate a new approach of image coding for quincunx sample arrangement. T...
Xiangjun Zhang, Xiaolin Wu, Feng Wu
DCC
2003
IEEE
16 years 6 months ago
Compression of RADARSAT Data with Block Adaptive Wavelets
: This paper proposes a new algorithm referred to as the Wavelet Packet-based Embedded Block coding (WPEB) scheme for SAR data compression. This algorithm combines the following pr...
Ian G. Cumming, Jing Wang
DCC
2002
IEEE
16 years 6 months ago
Diagnostically Lossless 3D Wavelet Compression for Digital Angiogram Video
A novel method for the compression of angiogram video sequences is presented. The approach is based on the idea that not all of an angiogram image will de diagnostically significa...
David Gibson, Sandra I. Woolley, Michael Spann