Texture classification using sparse frame-based representations

Authors:
Karl Skretting;John Håkon Husøy
Affiliations:
Department of Electrical and Computer Engineering, University of Stavanger, Stavanger, Norway;Department of Electrical and Computer Engineering, University of Stavanger, Stavanger, Norway
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2006

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Abstract

A new method for supervised texture classification, denoted by frame texture classification method (FTCM), is proposed. The method is based on a deterministic texture model in which a small image block, taken from a texture region, is modeled as a sparse linear combination of frame elements. FTCM has two phases. In the design phase a frame is trained for each texture class based on given texture example images. The design method is an iterative procedure in which the representation error, given a sparseness constraint, is minimized. In the classification phase each pixel in a test image is labeled by analyzing its spatial neighborhood. This block is represented by each of the frames designed for the texture classes under consideration, and the frame giving the best representation gives the class. The FTCM is applied to nine test images of natural textures commonly used in other texture classification work, yielding excellent overall performance.