Intra prediction mode search scheme

摘要

The following embodiments describe an approach for selecting an intra prediction mode for video encoding, such as occurs in the H.264 standard. One embodiment describes a method of selecting an optimum intra prediction mode. This method involves selecting a first intra prediction mode, which is used to determine a search order for a number of intra prediction modes. These intra prediction modes are then evaluated in order to identify the optimum intra prediction mode.

主权项

1. A method of selecting an optimum intra prediction mode, comprising:
selecting a first intra prediction mode; determining a search order for a plurality of intra prediction modes with reference to said first intra prediction mode, wherein said search order defines a relationship between said first intra prediction mode and remaining intra prediction modes based on a vector representation of relationships between prediction vectors associated with said plurality of intra prediction modes, wherein said search order lists said intra prediction modes in order of probability with reference to said first intra prediction mode; evaluating said first intra prediction mode and at least one of said plurality of intra prediction modes following said search order to determine a plurality of computational costs; and comparing computational costs of each evaluated mode to identify said optimum intra prediction mode comprising a lowest computational cost.