JP2015109680A - ビデオ符号化のための方法および装置 - Google Patents
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Abstract
【解決手段】画像ブロックのためのビデオ信号データを符号化するビデオ符号器は、共通の予測器を使用してビデオ信号データの全ての色成分を符号化するための符号器を含む。画像ブロックのためのビデオ信号データを復号化するビデオ復号器は、共通の予測器を使用してビデオ信号データの全ての色成分を復号化するための復号器を含む。加えて、画像ブロックのための信号データを符号化および復号化する装置及び方法は、残差色変換を適用することなくビデオ信号データの色成分を符号化/復号化するための符号器及び復号器を含む。さらに、画像ブロックのためのビデオ信号データを符号化/復号化するビデオ符号器および復号器は、ビデオ信号データの色成分毎に独自の予測器を使用してビデオ信号データを符号化/復号化するための符号器及び復号器を含む。
【選択図】図1
Description
・New1:単一の予測モードを用いる提案するアドバンスト4:4:4プロファイル。
・New3:3つの予測モードを用いる提案するアドバンスト4:4:4プロファイル。
・RCT−OFF:RCT=offとしたRGB入力。
・RCT−ON:RCT=onとしたRGB入力。
・YCOCG:RGBからYCOCGへの変換が符号復号器の外で実行された。その後、変換YCOCGが、JVTソフトウェアへの入力として使用された。
・R+G+B:R、G、およびB信号を別々に圧縮することによって近似された提案する方法。
・Y+CO+CG:変換Y、CO、およびCG信号を別々に圧縮することによって近似された提案する方法。
・J2k_RGB:JPEG2k圧縮がRGB領域で実行された。JPEG2k色変換はオフにされた。
・J2k_YUV:JPEG2k圧縮がYUV領域で実行された。JPEG2k色変換が使用された。
輝度用にprev_intra4×4_pred_mode_flag0およびrem_intra4×4_pred_mode0。
Cr用にprev_intra4×4_pred_mode_flag1およびrem_intra4×4_pred_mode1。
Cb用にprev_intra4×4_pred_mode_flag2およびrem_intra4×4_pred_mode2。
SymbolMode=1
RDOptimization=1
ScalingMatrixPresentFlag=0
OffsetMatrixPresentFlag=1
QoffsetMatrixFile=“q_offset.cfg”
AdaptiveRounding=1
AdaptRndPeriod=1
AdaptRndChroma=1
AdaptRndWFactorX=8
SearchRange=64
UseFME=1
New1:単一の予測モードを用いる提案するアドバンスト4:4:4プロファイル。
New3:3つの予測モードを用いる提案するアドバンスト4:4:4プロファイル。
RCT−OFF:RCT=offとしたRGB入力。
RCT−ON:RCT=onとしたRGB入力。
YCOCG:RGBからYCOCGへの変換が符号復号器の外で実行された。その後、変換YCOCGが、JVTソフトウェアへの入力として使用された。
R+G+B:R、G、およびB信号を別々に圧縮することによって近似された提案する方法。
Y+CO+CG:変換Y、CO、およびCG信号を別々に圧縮することによって近似された提案する方法。
JPEG2k_RGB:JPEG2k圧縮がRGB領域で実行された。JPEG2k色変換はオフにされた。
JPEG2k_YUV:JPEG2k圧縮がYUV領域で実行された。JPEG2k色変換が使用された。
Claims (22)
- 画像ブロックのためのビデオ信号データを符号化するための装置であって、前記ビデオ信号データの色成分を、それらに残差色変換を適用することなく符号化するための符号器(100)を含む、前記装置。
- 前記符号器による前記色成分の符号化の前に前記ビデオ信号データの色成分上で色変換を選択的に実行するために、前記符号器と信号通信を行う符号器前色変換モジュール(105)をさらに含む、請求項1に記載の装置。
- 前記符号器前色変換モジュール(105)によって実行される前記色変換が、非残差色変換である、請求項2に記載の装置。
- 前記符号器前色変換モジュール(105)が、前記ビデオ信号データに対応する原画像上で前記色変換を実行する、請求項2に記載の装置。
- 前記符号器前色変換モジュール(105)が、RGBフォーマットまたは任意の非RGBフォーマットで前記符号器に前記ビデオ信号データの変換色成分を提供する、請求項2に記載の装置。
- 前記符号器(100)が、共通の予測器を使用して、前記ビデオ信号データの前記色成分のすべてを符号化する、請求項1に記載の装置。
- 前記共通の予測器が、前記ビデオ信号データの輝度および色度成分の両方に対して使用される輝度予測器である、請求項6に記載の装置。
- 前記符号器(100)が、前記ビデオ信号データの前記色成分のすべてに対して共通の空間予測モードを使用する、請求項1に記載の装置。
- 前記共通の空間予測モードが、国際電気通信連合電気通信標準化部門のH.264規格のprev_intra8×8_pred_mode_flag、rem_intra8×8_pred_mode、prev_intra4×4_pred_mode_flag、およびrem_intra4×4_pred_modeパラメータによって設定される、請求項8に記載の装置。
- 前記符号器(100)が、BフレームおよびPフレームについて、前記ビデオ信号データの前記色成分のすべてに対して共通の補間フィルタを使用する、請求項1に記載の装置。
- 前記ビデオ信号データのサンプリングが、国際電気通信連合電気通信標準化部門のH.264規格の4:4:4、4:2:2、および4:2:0の何れかに対応する、請求項1に記載の装置。
- 画像ブロックのためのビデオ信号データを符号化するための方法であって、前記ビデオ信号データの色成分を、それらに残差色変換を適用することなく符号化(300)するステップを含む、前記方法。
- 前記ビデオ信号データの色成分上で色変換を選択的に実行するための、符号化前ステップ(308)をさらに含む、請求項12に記載の方法。
- 前記符号化前ステップ(308)によって実行される前記色変換が、非残差色変換である、請求項13に記載の方法。
- 前記符号化前ステップ(308)が、前記ビデオ信号データに対応する原画像上で前記色変換を実行する、請求項13に記載の方法。
- 前記符号化前ステップ(308)が、RGBフォーマットまたは任意の非RGBフォーマットで前記符号化ステップに前記ビデオ信号データの変換色成分を提供する、請求項13に記載の方法。
- 前記符号化ステップが、共通の予測器を使用して、前記ビデオ信号データの前記色成分のすべてを符号化(315)する、請求項12に記載の方法。
- 前記共通の予測器が、前記ビデオ信号データの輝度および色度成分の両方に対して使用される輝度予測器である、請求項17に記載の方法。
- 前記符号化ステップが、前記ビデオ信号データの前記色成分のすべてに対して共通の空間予測モードを使用する、請求項12に記載の方法。
- 前記共通の空間予測モードが、国際電気通信連合電気通信標準化部門のH.264規格のprev_intra8×8_pred_mode_flag、rem_intra8×8_pred_mode、prev_intra4×4_pred_mode_flag、およびrem_intra4×4_pred_modeパラメータによって設定される、請求項19に記載の方法。
- 前記符号化ステップが、BフレームおよびPフレームについて、前記ビデオ信号データの前記色成分のすべてに対して共通の補間フィルタを使用する、請求項12に記載の方法。
- 前記ビデオ信号データのサンプリングが、国際電気通信連合電気通信標準化部門のH.264規格の4:4:4、4:2:2、および4:2:0フォーマットの何れかに対応する、請求項12に記載の方法。
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