JP2016007085A - 映像復号装置、映像復号方法及びプログラム - Google Patents
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Abstract
【解決手段】映像復号装置は、ビットストリームに含まれる画像の変換データをエントロピー復号するエントロピー復号手段と、ビットストリームに含まれる画像の非圧縮符号化データを非圧縮復号する非圧縮復号手段と、非圧縮復号したデータの画素ビット長を増加させる画素ビット長増加手段と、エントロピー復号手段および非圧縮復号手段を制御する復号制御手段とを備え画素ビット長増加手段は、非圧縮復号手段の入力データに対応する画像の画素ビット長を、エントロピー復号手段の入力データに対応する画像の画素ビット長に揃える。
【選択図】図4
Description
本実施形態の映像符号化装置は、エントロピー符号化の出力データとPCM符号化の出力データのそれぞれに対応する画像の画素ビット長を互いに異ならせる手段、画素ビット長増加情報に基づいてPCM復号の復号画像の画素ビット長を増加させる手段、および画素ビット長増加情報をビットストリームに多重化する手段を備える。
本実施形態の映像復号装置では、エントロピー復号手段とPCM復号手段のそれぞれの入力データに対応する画像の画素ビット長が互いに異なるビットストリームを復号する。なお、前記エントロピー復号手段の入力データに対応する画像とは、後述する逆変換/逆量子化器206から供給される画素ビット長増加された入力映像の画像の再構築画像である。また、前記PCM復号手段の入力データに対応する画像とは、後述するPCM復号器203から供給される画素ビット長増加されていない入力映像のPCM復号画像である。
S'L[ xP + ( i % 16), yP + dy * ( i / 16)) ] = (pcm_sample_luma[ i ]<<increased_bit_depth_luma) (8-154')
S'Cb[ ( xP / SubWidthC ) + ( i % MbWidthC ), ( ( yP + SubHeightC − 1) / SubHeightC ) + dy * ( i / MbWidthC ) ] =
(pcm_sample_chroma[ i ]<< increased_bit_depth_chroma)
S'Cr[ ( xP / SubWidthC ) + ( i % MbWidthC ),( ( yP + SubHeightC − 1 ) / SubHeightC ) + dy * ( i / MbWidthC ) ] =
(pcm_sample_chroma[ i + MbWidthC * MbHeightC ]<< increased_bit_depth_chroma)
} (8-155’)
increased_bit_depth_chroma = internal_bit_depth_chroma_minus8
increased_bit_depth_chroma = internal_bit_depth_chroma_minus8 - pcm_sample_bit_depth_chroma_minus8
2 変換手段
3 エントロピー符号化手段
7 非圧縮符号化手段
8 多重化データ選択手段
9 画素ビット長減少手段
10 多重化手段
11 予測手段
12 逆変換手段
13 非圧縮復号手段
21 多重化解除手段
22 復号制御手段
23 非圧縮復号手段
24 エントロピー復号手段
26 逆変換手段
27 予測手段
101 画素ビット長増加器
102 変換/量子化器
103 エントロピー符号化器
104 逆変換/逆量子化器
105 バッファ
106 予測器
107 PCM符号化器
108 PCM復号器
109 多重化データ選択器
110 多重化器
111 画素ビット長増加器
112 画素ビット長減少器
121 スイッチ
122 スイッチ
201 多重化解除器
202 復号制御部
203 PCM復号器
204 エントロピー復号器
205 画素ビット長増加器
206 逆変換/逆量子化器
207 予測器
208 バッファ
209 画素ビット長減少器
221 スイッチ
222 スイッチ
1001 プロセッサ
1002 プログラムメモリ
1003 記憶媒体
1004 記憶媒体
Claims (3)
- ビットストリームに含まれる画像の変換データをエントロピー復号するエントロピー復号手段と、
前記ビットストリームに含まれる画像の非圧縮符号化データを非圧縮復号する非圧縮復号手段と、
前記非圧縮復号したデータの画素ビット長を増加させる画素ビット長増加手段と、
前記エントロピー復号手段および前記非圧縮復号手段を制御する復号制御手段とを備え、
前記画素ビット長増加手段は、前記非圧縮復号手段の入力データに対応する画像の画素ビット長を、前記エントロピー復号手段の入力データに対応する画像の画素ビット長に揃える
ことを特徴とする映像復号装置。 - ビットストリームに含まれる画像の変換データをエントロピー復号し、
前記ビットストリームに含まれる画像の非圧縮符号化データを非圧縮復号し、
前記エントロピー復号と前記非圧縮復号とを制御し、
前記非圧縮復号の入力データに対応する画像の画素ビット長が、前記エントロピー復号の入力データに対応する画像の画素ビット長と揃うように、前記非圧縮復号の入力データに対応する画像の画素ビット長を増加させる
ことを特徴とする映像復号方法。 - コンピュータに、
ビットストリームに含まれる画像の変換データをエントロピー復号する処理と、
前記ビットストリームに含まれる画像の非圧縮符号化データを非圧縮復号する処理と、
前記エントロピー復号と前記非圧縮復号とを制御する処理と、
前記非圧縮復号の入力データに対応する画像の画素ビット長が、前記エントロピー復号の入力データに対応する画像の画素ビット長と揃うように、前記非圧縮復号の入力データに対応する画像の画素ビット長を増加させる処理と
を実行させるための映像復号プログラム。
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| JP5850214B2 (ja) * | 2011-01-11 | 2016-02-03 | ソニー株式会社 | 画像処理装置および方法、プログラム、並びに記録媒体 |
| KR101954461B1 (ko) * | 2011-02-22 | 2019-03-05 | 타지반 투 엘엘씨 | 필터 방법, 동화상 부호화 장치, 동화상 복호 장치 및 동화상 부호화 복호 장치 |
| CN107094258B (zh) * | 2011-02-22 | 2020-02-14 | 太阳专利托管公司 | 图像解码方法及图像解码装置 |
| UA109312C2 (uk) | 2011-03-04 | 2015-08-10 | Імпульсно-кодова модуляція з квантуванням при кодуванні відеоінформації | |
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| EP2774362B1 (en) * | 2011-11-03 | 2023-07-26 | Sun Patent Trust | Quantization parameter for blocks coded in the pcm mode |
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