Video frame encoding and decoding

US7599435B2 · kind B2 · utility

Assignee

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

Inventors

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

Key dates

• Filing date: Jan 30, 2004
• Grant date: Oct 6, 2009
• Expiry date: May 29, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/61
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded.