Scale and Rotation Invariant Texture Classification Using Covariate Shift Methodology | IEEE Journals & Magazine | IEEE Xplore

Scale and Rotation Invariant Texture Classification Using Covariate Shift Methodology


Abstract:

In this letter, we propose to tackle rotation and scale variance in texture classification at the machine learning level. This is achieved by using image descriptors that...Show More

Abstract:

In this letter, we propose to tackle rotation and scale variance in texture classification at the machine learning level. This is achieved by using image descriptors that interpret these variations as shifts in the feature vector. We model these variations as a covariate shift in the data. This shift is then reduced by minimising the Kullback-Leibler divergence between the true and estimated distributions using importance weights (IW). These IWs are used in support vector machines (SVMs) to formulate the IW-SVMs. The experimental results show that IW-SVMs exhibit good invariance characteristics and outperform other state-of-the-art classification methods. The proposed methodology gives a generic solution that can be applied to any texture descriptor that models the transformations as a shift in the feature vector.
Published in: IEEE Signal Processing Letters ( Volume: 21, Issue: 3, March 2014)
Page(s): 321 - 324
Date of Publication: 24 January 2014

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