Textural Features for Image Classification-Texture is one of the important characteristics used in

identifying objects or regions of interest in an image, whether the image

be a photomicrograph, an aerial photograph, or a satellite image. This

paper describes some easily computable textural features based on gray-

tone spatial dependancies, and illustrates their application in category-

identification tasks of three different kinds of image data: photo-

micrographs of five kinds of sandstones,