VIDEO DECODING DEVICE AND VIDEO DECODING METHOD

PROBLEM TO BE SOLVED: To provide a video decoding device and a video decoding method capable of reproducing a moving image with high quality.SOLUTION: A video encoding device comprises: quantization step size decoding means for decoding a quantization step size that controls the granularity of inver...

Full description

Saved in:
Bibliographic Details
Main Authors SENDA YUZO, CHONO KEIICHI, AOKI HIROFUMI, SENZAKI KENTA
Format Patent
LanguageEnglish
Japanese
Published 10.08.2017
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:PROBLEM TO BE SOLVED: To provide a video decoding device and a video decoding method capable of reproducing a moving image with high quality.SOLUTION: A video encoding device comprises: quantization step size decoding means for decoding a quantization step size that controls the granularity of inverse quantization; and prediction image generation means for generating a prediction image of a decoding target image block by using an image decoded in the past and a predetermined parameter. The quantization step size decoding means predicts the quantization step size that controls the granularity of inverse quantization by using the parameter to be used for generating the prediction image.SELECTED DRAWING: Figure 20 【課題】高画質な動画像の再生が可能な映像復号装置及び映像復号方法を提供する。【解決手段】映像符号化装置は、逆量子化の粒度を制御する量子化ステップサイズを復号する量子化ステップサイズ復号手段と、過去に復号済みの画像と所定のパラメータとを用いて復号対象画像ブロックの予測画像を生成する予測画像生成手段とを備え、量子化ステップサイズ復号手段は、予測画像の生成に用いられるパラメータを用いて逆量子化の粒度を制御する量子化ステップサイズを予測する。【選択図】図20
Bibliography:Application Number: JP20170073515