Itt Data Compression provides the results of a recent survey in the field of 3D data compression of a remote feel, with a special interest in imagery.Chapter ITT 1 addresses compression architecture, and examine and compare methods of compression. Chapters 2 through 4 focus on lossless compression (where the decompressed image must be bit for bit identical to the original). Chapter 5, contributed by the editors, describes a lossless algorithm based on vector quantization with extensions for lossless and lossy compression may be near for the efficient maturation and pure pixel classification.Chapter six dealing with lossless compression close temporarily.