IMAGE ENCODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING METHOD, AND IMAGE DECODING APPARATUS

To provide an image encoding method which implements high compression rate and high image quality, and an image decoding method.SOLUTION: A block division unit 102 in an image encoding apparatus includes: a block division method determination unit 601 which analyzes characteristics of an image, adju...

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Bibliographic Details
Main Authors MURAKAMI TOMOKAZU, SHIMIZU TAKUYA
Format Patent
LanguageEnglish
Japanese
Published 08.04.2021
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:To provide an image encoding method which implements high compression rate and high image quality, and an image decoding method.SOLUTION: A block division unit 102 in an image encoding apparatus includes: a block division method determination unit 601 which analyzes characteristics of an image, adjusts size and position of a block for efficient encoding, and determines a block division method; and a block division duplication determination unit 602 which determines whether the determined block division method can be represented by a plurality of methods or not, allows only one representation and prohibits other representations, or selects a division method in order of priority of the processing when the determination is affirmative.SELECTED DRAWING: Figure 6 【課題】高い圧縮率とより良い画質とを実現することができる画像符号化方法及び画像復号方法を提供する。【解決手段】画像符号化装置におけるブロック分割部１０２は、画像の特徴を解析し効率的な符号化が行えるようにブロックのサイズ及び位置を調整し、ブロックの分割方法を決定するブロック分割方法決定部６０１と、決定したブロックの分割方法が複数の方法で表現可能かどうかを判定し、複数の表現方法が可能な場合には、１つの表現のみを可能として他を禁止するか又は処理の優先順位づけを行って分割方法を選択するブロック分割重複判定部６０２と、を備える。【選択図】図６
Bibliography:Application Number: JP20190178614