A Method of Coding Television Signals Based on Edge Detection
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TL;DR
A method is described for transmitting digitalized video signals to reduce channel capacity front that needed for standard PCM by taking advantage of the inability of the human eye to notice the exact amplitude and shape of short brightness transients.
Abstract
A method is described for transmitting digitalized video signals to reduce channel capacity front that needed for standard PCM. This method takes advantage of the inability of the human eye to notice the exact amplitude and shape of short brightness transients. The transmitted information consists of the amplitudes and times of occurrence of the “edge” points of video signals. These selected samples are coarsely quantized if they belong to high-frequency regions, and the receiver then interpolates straight lines between the samples. The system was simulated on the IBM 704 computer. The processed pictures and obtained channel-capacity savings are presented.