Method and apparatus for assessing the quality of a video signal during encoding and transmission of the video signal

US9232216B2 · kind B2 · utility

Assignee

• DEUTSCHE TELEKOM AG · DE

Inventors

• Alexander Raake · Berlin, DE
• Marie-Neige Garcia · Berlin, DE
• Peter List · Bonn, DE
• Savvas Argyropoulos · Berlin, DE
• Bernhard Feiten · Berlin, DE

Key dates

• Filing date: Sep 2, 2011
• Grant date: Jan 5, 2016
• Expiry date: Aug 5, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N21/4425
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method for assessing the quality of a transmitted video signal sequence at the receiver side includes the steps of: capturing the received input video bit stream prior to decoding and supplying it to a video bit stream analyzer; extracting, during a measurement time window, one or more features from the captured packet headers by the bit stream analyzer, without analyzing or decoding the packet payload; computing from the one or more features, a single parameter, xwpSEQ, representing an estimate of the spatio-temporal extent of the signal degradation due to packet-loss; supplying the determined parameter to a quality estimation module; and calculating, by the quality estimation module, a quality measure due to packet loss (Qtrans) based on the single parameter representing the estimate of the spatio-temporal extent of the signal degradation, xwpSEQ, due to packet-loss and based on video resolution information and employed video codec.