The texture set is suitable for evaluating and comparing texture measures, their sensitivity to noise and geometric transforms. It is comprised of 28 classes with 160 unique samples per class. The samples are 576x576 pixels large and stored as gray scale 8-bit png-images. The original images were acquired in a lossless raw format followed by correction for chromatic aberration, lens distortion andvingetting. After conversion to gray scale the intensity was normalized for all samples to the same mean and standard deviation. In addition, 12 rotations of each sample are also available.Features:28 texture classes.160 unique texture patches per class. (Alternative dataset with 12 rotations per each original patch, 160*12=1920 texture patches per class).Texture patch size: 576x576 pixels.File format: Lossless compressed 8 bit PNG.All patches are normalized with a mean value of 127 and a standard deviation of 40.One directory per texture class.Files are named as follows: blanket1-d-p011-r180.png, where blanket1 is the class name, d original image sample number (possible values are a, b, c, or d), p011 is patch number 11, r180 patch rotated 180 degrees