Method and apparatus for encoding and decoding motion vector by predicting motion vector according to mode

Patent metadata

Field	Value
Publication number	US-9131237-B2
Application number	US-201414515226-A
Country	US
Kind code	B2
Filing date	Oct 15, 2014
Priority date	Jan 14, 2010
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block.

First claim

What is claimed is:

1. An apparatus for decoding an image, the apparatus comprising:
a coding information extractor which obtains prediction mode of a current block from a bitstream;
an image data decoder which obtains spatial motion vector predictor candidates using a neighboring block adjacent to the current block and a temporal motion vector predictor candidate of the current block using a block co-located with the current block in a temporal reference picture in direction L…

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Tammy
• Han Woo-Jin
• Min Jung-Hye

Classifications

• H04N19/70

  Electricity · mapped topic

• H04N19/51

  Electricity · mapped topic

• H04N19/33 Primary

  Electricity · mapped topic

• H04N19/105

  Electricity · mapped topic

• H04N19/147

  Electricity · mapped topic