نتایج جستجو برای: rotation invariant

تعداد نتایج: 145314  

2003
Huawu Deng David A. Clausi

The features based on Markov random field (MRF) models are usually sensitive to the rotation of image textures. This paper develops an anisotropic circular Gaussian MRF (ACGMRF) model for modelling rotated image textures and retrieving rotation-invariant texture features. To overcome the singularity problem of the least squares estimate (LSE) method, an approximate least squares estimate (ALSE)...

Journal: :journal of sciences islamic republic of iran 0

in addition to optimal conditions, invariant laws of lorentz, parity and time reversal are imposed to find the relation between observables (spin rotation parameters) and bilinear combination of helicity amplitudes in pion-proton elastic scattering at 6.0 gev/c. by normalizing the differential cross-section to unity, the magnitudes of helicity amplitudes and the angle between them are determine...

Journal: :Neurocomputing 2013
Zhenhua Guo Qin Li Lin Zhang Jane You David Zhang Wenhuang Liu

Extracting local rotation invariant features is a popular method for the classification of rotation invariant texture. To address the issue of local rotation invariance, many algorithms based on anisotropic features were proposed. Usually a dominant orientation is found out first, and then anisotropic feature is extracted by this orientation. To validate whether local dominant orientation is ne...

Journal: :Transactions of the American Mathematical Society 1988

Journal: :Publications of the Research Institute for Mathematical Sciences 1972

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