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ICPR
2006
IEEE
16 years 7 months ago
Uncertainties-driven Surface Morphing: The case of Photo-realistic Transitions between Facial Expressions
Reproduction of facial animation play a fundamental role in applications requiring human-computer interactions The objective of this paper is to introduce a geometric mechanism th...
Charlotte Ghys, Maxime Taron, Nikos Paragios
ICPR
2002
IEEE
16 years 7 months ago
Structure in Errors: A Case Study in Fingerprint Verification
Measuring the accuracy of biometrics systems is important. Accuracy estimates depend very much on the quality of the test data that are used. Including poor quality data will degr...
Sharath Pankanti, Nalini K. Ratha, Ruud M. Bolle
WWW
2008
ACM
16 years 7 months ago
Core geographical concepts: case Finnish geo-ontology
In this paper we examine 1) the scope of geo-ontologies used especially for the purposes of information retrieval on the Web, 2) the core geographical concepts and their mutual re...
Eero Hyvönen, Riikka Henriksson, Tomi Kauppin...
CHI
2007
ACM
16 years 7 months ago
Minimizing modality bias when exploring input preferences for multimodal systems in new domains: the archivus case study
In this paper we discuss the problems faced when trying to design an evaluation protocol for a multimodal system using novel input modalities and in a new domain. In particular, w...
Agnes Lisowska, Martin Rajman, Mireille Bét...
SIGMOD
2004
ACM
105views Database» more  SIGMOD 2004»
16 years 6 months ago
The Priority R-Tree: A Practically Efficient and Worst-Case Optimal R-Tree
We present the Priority R-tree, or PR-tree, which is the first R-tree variant that always answers a window query using O((N/B)1-1/d + T/B) I/Os, where N is the number of ddimensio...
Lars Arge, Mark de Berg, Herman J. Haverkort, Ke Y...