Video encoding apparatus and video encoding method

Patent metadata

Field	Value
Publication number	US-9106917-B2
Application number	US-79120510-A
Country	US
Kind code	B2
Filing date	Jun 1, 2010
Priority date	Jun 3, 2009
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A video encoding method and apparatus performing intra-frame prediction in units of a sub-block determined by any one of two or more block sizes is provided. The method includes generating a prediction image in each of a plurality of intra-frame prediction modes in units of the sub-block determined by each block size, calculating a first evaluation value on the basis of the difference images between an original image and the prediction images in the intra-frame prediction modes for the sub-blocks determined by each block size, accumulating values indicating frequency characteristics of the original image for the sub-blocks determined by each block size in units of a macroblock to obtain a second evaluation value, and selecting one of the two or more block sizes on the basis of the first evaluation values and the second evaluation values.

First claim

What is claimed is:

1. A video encoding apparatus, comprising:
a computer configured to implement an operation with the video encoding apparatus that includes:
generating a prediction image in each of a plurality of intra-frame prediction modes in units of a sub-block determined by each block size;
calculating a first evaluation value based on a difference between an original image and prediction images in the intra-frame prediction modes for sub-blocks determined by each block…

Assignees

• Shimada Satoshi
• Fujitsu Ltd

Inventors

• Shimada Satoshi

Classifications

• H04N19/134

  Electricity · mapped topic

• H04N19/11

  Electricity · mapped topic

• H04N19/61

  Electricity · mapped topic

• H04N19/119

  Electricity · mapped topic

• H04N19/176

  Electricity · mapped topic