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STACS
2009
Springer
15 years 11 months ago
Compressed Representations of Permutations, and Applications
We explore various techniques to compress a permutation π over n integers, taking advantage of ordered subsequences in π, while supporting its application π(i) and the applicat...
Jérémy Barbay, Gonzalo Navarro
MFCS
2009
Springer
15 years 11 months ago
The Isomorphism Problem for k-Trees Is Complete for Logspace
Abstract. We show that k-tree isomorphism can be decided in logarithmic space by giving a logspace canonical labeling algorithm. This improves over the previous StUL upper bound an...
Johannes Köbler, Sebastian Kuhnert
123
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CDC
2008
IEEE
288views Control Systems» more  CDC 2008»
15 years 11 months ago
Open-loop combustion timing control of a Spark-Ignited engine
— In this paper, we propose a control strategy to improve the combustion efficiency of Spark Ignited engines. More precisely, we adapt the spark ignition time according to varia...
Mathieu Hillion, Jonathan Chauvin, Nicolas Petit
ICPR
2008
IEEE
15 years 11 months ago
Iris localization based on multi-resolution analysis
Iris localization is an especially important step in the whole iris recognition system, for it determines the accuracy of matching partially. To improve its accuracy and efficienc...
Lili Pan, Mei Xie, Zheng Ma
ICRA
2007
IEEE
115views Robotics» more  ICRA 2007»
15 years 11 months ago
Performing Weak Calibration at the Microscale, Application to Micromanipulation
Abstract— We improve and adjust usual weak calibration techniques to the case of stereo video microscopes : Harris detector using a simplex optimization method for feature points...
Julien Bert, Sounkalo Dembélé, Nadin...