The area of texture segmentation has undergone tremendous growth in recent years. There has been a great deal of activity both in the refinement of previously known approaches and in the development of completely new techniques. Although a wide variety of methodologies have been applied to this problem, there is a particularly strong concentration in the development of feature-based approaches and on the search for appropriate texture features. In this paper, we present a survey of current texture segmentation and feature extraction methods. Our emphasis is on techniques developed since 1980, particularly those with promise for unsupervised applications.