The document discusses texture analysis in computer vision. It begins by asking what texture is and whether objects themselves can be considered textures. It then outlines several statistical and Fourier approaches to texture analysis, citing specific papers on texture energy measures, texton theory, and using textons to model materials. Deep convolutional neural networks are also discussed as being able to recognize and describe texture through learned filter banks. The concept of texels is introduced as low-level features that make up texture at different scales from edges to shapes. The document hypothesizes that CNNs are sensitive to texture because texture repeats across images while object shapes do not, and that CNNs act as texture mappers rather than template matchers. It also questions whether primary visual cortex