Displaying Computer Generated Half-Tone Pictures in Real Time

摘要

The paper describes a system which will allow computer generated half-tone pictures to be displayed in real time. Half-tone or shaded pictures are valuable since they allow object surfaces to be displayed. The picture must first be described in terms of its visible surface boundaries. This is a convenient form since the information required is produced by the hidden line algorithms used to generate the picture. Such a form usually represents a substantial savings in the number of bits required to describe a picture. A display generator is described which will convert these edge descriptions into intensity values which can then be displayed on a faster scan device. A 512 by 512 point picture can be generated in less than 1/30 of a second. This picture can then be displayed directly on an oscilloscope or placed on a storage disk which will refresh a standard television set. (Author)