Patent · US Active

Adaptive intra mode selection

US8670488B2 · kind B2 · utility

12Cited by

3References

32Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Kenneth Andersson · Gävle, SE
Per Fröjdh · Stockholm, SE
Clinton Priddle · Brisbane, AU
Jonatan Samuelsson · Stockholm, SE

Key dates

Filing date	Jul 31, 2008
Grant date	Mar 11, 2014
Priority date	—
Expiry date	Jul 4, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/61
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In video encoding and decoding predictions may be generated by intra-frame prediction. Intra-frame prediction uses reconstructed pixels in a reconstructed frame. Intra-frame prediction is performed by extending the reconstructed pixels into a predicted block using intra-frame prediction modes, each intra-frame prediction mode indicating a direction of the extension. In order to reduce the number of possible intra-frame prediction modes, a subset is selected from a predetermined set of possible intra-frame prediction modes. A subset of intra-frame prediction modes can be created by forming preselection sets of intra-frame prediction modes on the basis of similarity of their associated predicted blocks and selecting a representative intra-frame prediction mode from each preselection set.

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