This book is a detailed descr iption of the basics of three-dimensional digital image processing. A 3D digital image (abbreviated as “3D image” below) is a digitalized representation of a 3D object or an entire 3D space, stored in a computer as a 3D
Queries to a search engine follow a power-law distribution, which is far from uniform. Hence, it is natural to adapt a search engine index to the query distribution. In this paper we present a three level memory organization for a search engine inve