February 2002 | NTIA Handbook HB-02-01
Margaret H. Pinson; Stephen Wolf
Abstract: The purpose of this handbook is to provide a user’s manual for the video quality metric (VQM) tool. The VQM software tool performs automated batch processing of video files. Program VQM runs under the UNIX operating system and uses a control file to specify the exact video quality measurement procedures that are to be performed. All results are emailed to the user. Program VQM compares the video sequence that has been processed by the video system under test to the original video sequence through two main steps. First, program VQM calibrates the processed video sequence to remove systematic differences between the original and processed, such as spatial and temporal shifts. Second, program VQM estimates and reports the perceived quality of the processed video using one of five video quality models. Quality estimates are reported on a scale of zero to one, where zero means that no impairment is visible and one means that the video clip has reached the maximum impairment level.
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Margaret H. Pinson
Institute for Telecommunication Sciences
Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.