scope:

The methods presented in this standard belong to the class of Reduced Reference (RR) objective video quality estimation algorithms [1]. The methods can be utilized where one has access to both the source video and the corresponding destination, or processed video, of an end-to-end video transmission system (e.g., a coder, a digital transmission system, and a decoder). In addition, an ancillary method must be available to transmit RR information between the source and destination ends. It is anticipated that the methods in this standard will be useful for a wide range of video transmission systems, including but not limited to, video transmitted to cell phones, PDAs, personal computers, as well as Standard Definition TV (SDTV) and High Definition TV (HDTV) distribution to the home via broadcast, satellite, digital cable, and IPTV.

Purpose

The purpose of this standard is to provide a standardized RR video calibration estimation method for use by industry.

Application

Since video system calibration problems may affect the accuracy of RR video quality measurement systems, it is anticipated that a primary application of this standard will be to estimate and remove calibration issues that are present in an end-to-end video transmission system prior to making RR video quality measurements. The calibration information that is estimated by this standard includes spatial registration (nearest pixel), spatial scaling (nearest .0.1% of the frame size), gain (i.e., contrast), level offset (i.e., brightness), valid picture area, and video delay (to nearest field if interlaced or nearest frame if progressive).

Another useful application of this standard is during deployment and maintenance of end-to-end video systems and services to assure proper system calibration.

This standard can be used (with some array size modifications) for interlaced or progressive video systems with resolutions of Rec. 601, VGA, CIF, SIF, QCIF, QSIF, and all HDTV resolutions.