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ISBI
2006
IEEE
16 years 7 months ago
Texture-based segmentation of the knee bones in MRI using phase information
This paper considers the problem of tissue classification in 3D MRI by the mean of texture analysis. The main contribution is the use of the phase of the complex MR image, to deri...
Peter Stanwell, Pierrick Bourgeat, Sébastie...
WWW
2006
ACM
16 years 7 months ago
Using symbolic objects to cluster web documents
Web Clustering is useful for several activities in the WWW, from automatically building web directories to improve retrieval performance. Nevertheless, due to the huge size of the...
Esteban Meneses, Oldemar Rodríguez-Rojas
STOC
2004
ACM
88views Algorithms» more  STOC 2004»
16 years 6 months ago
Expander flows, geometric embeddings and graph partitioning
We give a O( log n)-approximation algorithm for sparsest cut, edge expansion, balanced separator, and graph conductance problems. This improves the O(log n)-approximation of Leig...
Sanjeev Arora, Satish Rao, Umesh V. Vazirani
ISMAR
2009
IEEE
16 years 1 months ago
Online environment model estimation for augmented reality
Augmented reality applications often rely on a detailed environment model to support features such as annotation and occlusion. Usually, such a model is constructed offline, whic...
Jonathan Ventura, Tobias Höllerer
ICIAR
2009
Springer
16 years 1 months ago
Three Dimensional Segmentation of Intravascular Ultrasound Data
Intravascular ultrasound (IVUS) is a useful imaging technique that can be used to assess the health of coronary arteries. However, manual segmentation of the lumen and adventia bou...
Marc Wennogle, William Hoff