Method and arrangement for coding transform coefficients in picture and/or video coders and decoders and a corresponding computer program and a corresponding computer-readable storage medium

US7496143B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Heiko Schwarz · Panketal, DE
• Detlef Marpe · Berlin, DE
• Thomas Wiegand · Berlin, DE

Key dates

• Filing date: Dec 27, 2004
• Grant date: Feb 24, 2009
• Expiry date: Oct 31, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/93
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method and an arrangement for coding transform coefficients in picture and/or video coders and decoders and a corresponding computer program and a corresponding computer-readable storage medium are provided, which can particularly be employed as a novel efficient method for binary-arithmetic coding transform coefficients in the field of video coding. For this, it is suggested that, for blocks of (video) pictures containing significant transform coefficients, coding of the transform coefficients takes place in such a way that, for each block in a scan process, the positions of significant transform coefficients in the block and subsequently, in a reverse scan order—starting from the last significant transform coefficient within the block—the values (levels) of the significant transform coefficients are determined and coded.