STEREOSCOPIC VIDEO-GRAPHIC COORDINATE SPECIFICATION SYSTEM

摘要

A stereoscopic image generator for superimposing a stereographic pointer video signal onto a composite standard video signal, the generator comprises a computer for generating the stereographic pointer video signal in response to an input signal representative of the three dimensional coordinates of a point in a three dimensional video image, a video synchronizing circuit for receiving the composite standard video signal and delivering a synchronization signal to the computer, and a video keying circuit for receiving the composite standard video signal and the stereographic pointer video signal and superimposing the stereographic pointer video signal onto the composite standard video signal to produce a single combined video signal, the single combined video signal allowin g the stereographic pointer video signal and the composite standard video signal t o be viewed together simultaneously on the same video screen.