Rotation Invariant Texture Description Using Symmetric Dense Microblock Difference
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||5|
|Journal||IEEE Signal Processing Letters|
|Publication status||Published - 1 Jun 2016|
|Publication type||A1 Journal article-refereed|
This letter is devoted to the problem of rotation invariant texture classification. Novel rotation invariant feature, symmetric dense microblock difference (SDMD), is proposed which captures the information at different orientations and scales. N-fold symmetry is introduced in the feature design configuration, while retaining the random structure that provides discriminative power. The symmetry is utilized to achieve a rotation invariance. The SDMD is extracted using an image pyramid and encoded by the Fisher vector approach resulting in a descriptor which captures variations at different resolutions without increasing the dimensionality. The proposed image representation is combined with the linear SVM classifier. Extensive experiments are conducted on four texture data sets [Brodatz, UMD, UIUC, and Flickr material data set (FMD)] using standard protocols. The results demonstrate that our approach outperforms the state of the art in texture classification. The MATLAB code is made available.1 1Matlab Code: http://www.cs.tut.fi/~mehta/symdmd.
- image representation, local features, Rotation invariant features, texture classification