METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BY USING LARGE TRANSFORMATION UNIT

PROBLEM TO BE SOLVED: To provide a method and apparatus for encoding and decoding an image by using a more efficient discrete cosine transform (DCT).SOLUTION: A method comprises grouping a plurality of prediction units into a transformation unit so as to set the transformation unit to be greater tha...

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Bibliographic Details
Main Authors CHEN JIANLE, JUNG HAE-KYUNG, LEE TAMMY, HAN WOO-JIN
Format Patent
LanguageEnglish
Japanese
Published 01.10.2015
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:PROBLEM TO BE SOLVED: To provide a method and apparatus for encoding and decoding an image by using a more efficient discrete cosine transform (DCT).SOLUTION: A method comprises grouping a plurality of prediction units into a transformation unit so as to set the transformation unit to be greater than the prediction units, and using the DCT for transformation into the frequency domain. 【課題】より効率的なＤＣＴ（Ｄｉｓｃｒｅｔｅ Ｃｏｓｉｎｅ Ｔｒａｎｓｆｏｒｍ）を利用した映像を符号化、復号化する方法及び装置を提供する。【解決手段】複数の予測単位を一つの変換単位にグルーピングして予測単位より大きいサイズに変換単位を設定し、ＤＣＴを用いて周波数領域に変換する。【選択図】図３
Bibliography:Application Number: JP20150095215