نتایج جستجو برای: anisotropic shape feature

تعداد نتایج: 450833  

Journal: :Int. Arab J. Inf. Technol. 2015
Manoharan Subramanian Sathappan Sathappan

In general the users are in need to retrieve images from a collection of database images from variety of domains. In earlier phase this need was satisfied by retrieving the relevant images from different database simply. Where there is a bottleneck that the images retrieved was not relevant much to the user query because the images were not retrieved based on content where another drawback is t...

Journal: :journal of medical signals and sensors 0
nooshin jafari fesharaki hossein pourghassem

abstract— due to the daily mass production and the widespread variation of medical x-ray images, it is necessary to classify these for searching and retrieving proposes, especially for content-based medical image retrieval systems. in this paper, a medical x-ray image hierarchical classification structure based on a novel merging and splitting scheme and using shape and texture features is prop...

Journal: :Journal of Computer Science and Technology 2012

Journal: :journal of medical signals and sensors 0
fatemeh ghofrani mohammad sadegh helfroush mahmoud rashidpour kamran kazemi

in this paper a novel fuzzy scheme for medical x-ray image classification is presented. in this method, any image is partitioned in to 25 overlapping subimages and then shape-texture features are extracted from shape and directional information extracted from any subimage. in the classification stage, we apply a fuzzy membership to any subimage with respect to euclidean distance between feature...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2006
Brian Stout Michel Nevière Evgeny Popov

Establishing a vector spherical harmonic expansion of the electromagnetic field propagating inside an arbitrary anisotropic medium, we extend Mie theory to the diffraction by an anisotropic sphere, with or without losses. The particular case of a uniaxial material leads to a simpler analysis. This work opens the way to the construction of a differential theory of diffraction by a three-dimensio...

1996
Daniel Rueckert

We present a general formulation for a new knowledge-based approach to anisotropic diiusion of multi-feature and multi-dimensional images, with an illustrative application to cardiac MRI. We incorporate all available information through a more complete deenition of the conductance function which diiers from previous approaches in two aspects. First, we model the conductance as an explicit funct...

2010

We show that for elliptic parametric functionals whose Wulff shape is smooth and has strictly positive curvature, any surface with constant anisotropic mean curvature which is a topological sphere is a rescaling of the Wulff shape.

1996
Gerardo I. Sanchez-Ortiz Daniel Rueckert Peter Burger

We present a general formulation for a new knowledge-based approach to anisotropic diiusion of multi-feature and multi-dimensional images, with an illustrative application to cardiac MRI. We incorporate all available information through a more complete deenition of the conductance function which diiers from previous approaches in two aspects. First, we model the conductance as an explicit funct...

2007
Hyun-Chul Kim Hyoung-Joon Kim Wonjun Hwang Seok-Cheol Kee Whoi-Yul Kim

The fixed mean shape that is built from the statistical shape model produces an erroneous feature extraction result when ASM is applied to multipose faces. To remedy this problem the mean shape vector which is similar to an input face image is needed. In this paper, we propose the adaptive mean shape to extract facial features accurately for non frontal face. It indicates the mean shape vector ...

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