Samuel Tschiedel Guedes,  Díbio Leandro Borges. 

Bark texture classification is a difficult image analysis problem because of the lack of regularity in those texture images. In this work bark texture features are extracted using magnitude coefficients of a Dual ­Tree Complex Wavelet Transform (DT­CWT). A database with acquired images of 51 classes of barks, 36 samples for each class, is tested computing recall and precision curves for 4 different distance metrics. Experiments are done also including Brodatz images and Gabor features. Results show that the DT­CWT coefficients are as accurate as Gabor features for bark texture classification if estimated and compared with equivalent orientations and scales. Advantages are to the DT­CWT features since they are faster to compute.

http://www.lbd.dcc.ufmg.br/colecoes/wvc/2008/0028.pdf

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