Abstract
Video compression continues to permeate the television environment, becoming more common place from the studio and edit suite to transmission and broadcast. Consumers will view video programs that will have compression added to compression. How will the quality be judged? is the compression really lossless or lossy? What is actually happening to the video? The fact is, video compression is here and will continue to expand and affect the production, postproduction, distribution and transmission processes. Now, more than ever, reliable testing methods are needed to quantify the performance of video compression Presently, standardized objective measurements do not exist for digital video compression testing. StellaCom has implemented measures from a number of sources and others of our own design on a low-cost workstation. These measurements utilize complex digital image processing techniques to analyze differences between source and processed video sequences. This paper presents some of the issues and concerns of video compression applications in a global television environment, and describes our implementation of an automated system to capture and test the quality of digitally compressed video.
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