<title>Transmission And Storage Bandwidth Reduction For Spatial Image Data Associated With Three-Dimensional Television Systems With Parallax</title>

Abstract

AbstractA theoretical discussion of a method of reducing redundancy from spatial image data is in-cluded. An approach to the reduction of bandwidth for multiple image three -dimensional tele-vision, is developed through the use of data gathered about subject's spatial properties, aswell as conventional image properties. Types of apparatus suitable for gathering spatial andimage data as they pertain to methods of reducing redundancy are discussed. A wave form de-rived from spatial image data is suggested and analyzed with reference to its usefulness inthe transmission and storage of spatial image data. A brief description of the authors ex-perimental work in the development of reproduction geometry for three -dimensional televisiondisplays that are viewed without special glasses of any kind and display parallax is provided.A discussion of theoretical advantages of two -dimensional image synthesis from three- dimen-sional spatial image data is provided. The use of such image synthesis in connection withthe aforementioned transmission wave form allowes certain developments of existing televisiondisplays to be proposed as part of a practicable system.IntroductionThe two principle obstructions, to the development of a practical three -dimensional tele-vision system that displays parallax, most frequently sighted are: apparatus too bulky to bepractical,1 and a signal bandwidth too broad to be economicaly transmitted or recorded.234Among the various systems that have been proposed for the attainment of three -dimensiomaltelevision with parallax some have advantages at the pickup end while others possess desir-able properties at the reproducing end. By applying high speed signal processing it becomesfeasible to interface otherwise incompatible apparatus. A biproduct of such signal process-ing is the ability to separate the various aspects that go into the construction of images.It would then be possible to isolate the separeted image aspects as a means of eliminatingthe unwanted factors. Such elimination could then be used to reduce the amount of data re-quired for transmission.Bandwidth in multiple image and multiple plane systemsAn elementary form of a multiple image television system is indicated in Figure 1. An ar-ray of television cameras transmit via multipath to an array of television projectors focus-sed on a double sided lenticular screen.5 The total bandwidth required would then be indi-cated from equation 1.Where: nvt= total number of views