Region digitization and boundary estimation

Digital complexes most often arise in practice as binary images, digitized by computer vision systems from real objects. In this paper, schemes for region digitization and boundary estimation are discussed in relation to the actual physical process of binary image acquisition. The region digitization scheme motivated naturally by such a discussion is also appropriate for use in theoretical studies of digital complexes. The same discussion suggests a method for obtaining an estimate of the boundary of an object from its binary image.