Patent · US Expired

Coding of image sequences with a plurality of image blocks and reference images

US7660474B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gero Bäse · Birkenfeld, DE
Dimitrios Kontopodis · Athens, GR
Jürgen Pandel · Feldkirchen-Westerham, DE
Thomas Stockhammer · Bergen, DE

Key dates

Filing date	Jan 23, 2003
Grant date	Feb 9, 2010
Priority date	—
Expiry date	Oct 22, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/89
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A coding method codes a sequence of digitized images with a plurality of macro blocks in error-prone networks in which case the macro blocks in a section of the image are coded in a first intra-coding mode depending on predetermined criteria. In addition, the macro blocks in a section of the image are coded in a second intra-coding mode or in an inter-coding mode in which case in the inter-coding mode for the macro blocks, movement vectors are selected from the number of accessible reference images. The selection from the number of accessible reference images is limited in such a way that referencing takes place from image areas that were not subjected to the first intra-coding mode at a later stage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.