Institute for Telecommunication Sciences
the research laboratory of the National Telecommunications and Information Administration

Institute for Telecommunication Sciences / Resources / Video Quality Research / Standards / Analysis

Analysis and Definitions

U.S. Standards 

ANSI T1.801.02-1996,

"American National Standard for Telecommunications - Digital Transport of Video Teleconferencing/Video Telephony Signals - Performance Terms, Definitions, and Examples."

ANSI T1.801.02 provides a dictionary of digital video performance terms and impairments. This standard includes a video tape that illustrates common digital video impairments such as tiling, smearing, edge busyness, error blocks, and jerkiness. Thus, this standard gives end-users and service providers a common language for discussing digital video quality.

For copies of this standard, contact the American National Standards Institute (ANSI).

ANSI T1.801.04-1997,

"American National Standard for Telecommunications - Multimedia Communications Delay, Synchronization, and Frame Rate Measurement."

ANSI T1.801.04 defines measurement methods for audio delay, video delay, and audio-visual synchronization. These performance parameters are important for interactive (i.e., two-way) telecommunication services.

For copies of this standard, contact the American National Standards Institute (ANSI).

U.S. Technical Reports: 

From 2000 to 2003, ITS personnel also helped develop a series of technical reports (TRs) that have been published by Committee T1 - Telecommunications, Alliance for Telecommunications Industry Solutions (ATIS). These technical reports can be downloaded directly from ATIS.

T1.TR.72-2001, 2003

"Methodological Framework for Specifying Accuracy and Cross-Calibration of Video Quality Metrics."

T1.TR.73-2001

"Video Normalization Methods Applicable to Objective Video Quality Metrics Utilizing a Full Reference Technique."

T1.TR.77-2002

"Data and Sample Program Code to be used with the Method Specified in Technical Report T1.TR.PP.72-2001 for the Calculation of Resolving Power of the Video Quality Metrics in Technical Reports T1.TR.PP.74-2001 and T1.TR.PP.75-2001."