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» Describing texture directions with Von Mises distributions
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ICPR
2004
IEEE
14 years 8 months ago
Estimating the Stretching Characteristics of Fiber Bundles in Microscopic Images
Collagen fiber bundles are important constituent parts of biological soft tissues, such as tendons, blood vessels and skin.The single collagen fibers within a bundle have a certai...
Gerhard Holzapfel, Horst Bischof, Pierre Elbischge...
KDD
2003
ACM
109views Data Mining» more  KDD 2003»
14 years 8 months ago
Generative model-based clustering of directional data
High dimensional directional data is becoming increasingly important in contemporary applications such as analysis of text and gene-expression data. A natural model for multivaria...
Arindam Banerjee, Inderjit S. Dhillon, Joydeep Gho...
ICC
2007
IEEE
137views Communications» more  ICC 2007»
14 years 2 months ago
On the Simulation of Tikhonov Random Processes
Abstract— A novel, simple and efficient method for the generation of Tikhonov (a.k.a. von Mises) random variates is proposed. In the proposed method, circular variates of a pres...
Giuseppe Thadeu Freitas de Abreu
ICCV
2005
IEEE
14 years 9 months ago
Multiple Light Sources and Reflectance Property Estimation Based on a Mixture of Spherical Distributions
In this paper, we propose a new method for simultaneously estimating the illumination of the scene and the reflectance property of the object from a single image. We assume that t...
Kenji Hara, Ko Nishino, Katsushi Ikeuchi
CVPR
2009
IEEE
14 years 2 months ago
Robust shadow and illumination estimation using a mixture model
Illuminant estimation from shadows typically relies on accurate segmentation of the shadows and knowledge of exact 3D geometry, while shadow estimation is difficult in the presen...
Alexandros Panagopoulos, Dimitris Samaras, Nikos P...