JP6132006B1 - 映像符号化装置、映像システム、映像符号化方法、及び映像符号化プログラム - Google Patents
映像符号化装置、映像システム、映像符号化方法、及び映像符号化プログラム Download PDFInfo
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Abstract
Description
・L=0の構造:Temporal ID が0のピクチャだけで構成されるSOP 構造(つまり、同SOPに含まれるピクチャの段数は1つである。最大Temporal ID を示すLが0であるともいえる。)
・L=1の構造:Temporal ID が0のピクチャおよび1のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は2つである。最大Temporal ID を示すLが1であるともいえる。)
・L=2の構造:Temporal ID が0のピクチャ、1のピクチャ、および、2のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は3つである。最大Temporal ID を示すLが2であるともいえる。)
・L=3の構造:Temporal ID が0のピクチャ、1のピクチャ、2のピクチャ、および3のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は4つである。最大Temporal ID を示すLが3であるともいえる。)
図3は、図1に示された映像符号化装置100の第1の実施形態の動作を示すフローチャートである。第1の実施形態では、8Kの映像は4分割され(図11参照)、スライス境界付近において動きベクトル制限があるとする。また、動きベクトル制限として、±128を例にする。8Kの映像は4分割され、かつ、動きベクトル制限があることは、他の実施形態でも同様である。なお、M値の初期値は8(M=8)である。
|Mavg|≦128 → M=8を維持
128<|Mavg|≦256 → M=4(M=8の1/2)に決定
256<|Mavg|≦512 → M=2(M=8の1/4)に決定
512<|Mavg| → M=1(M=8の1/8)に決定
|Mavg|≦64 → M=8に決定
64<|Mavg|≦128 → M=4を維持
128<|Mavg|≦256 → M=2に決定
256<|Mavg| → M=1に決定
図4は、図1に示された映像符号化装置100の第2の実施形態の動作を示すフローチャートである。
図5は、図1に示された映像符号化装置100の第3の実施形態の動作を示すフローチャートである。
・L=1の構造:Temporal ID が0のピクチャおよび1(またはM)のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は2つである。最大Temporal ID を示すLが1(またはM)であるともいえる。)
・L=2の構造:Temporal ID が0のピクチャ、1のピクチャ、および、2(またはM)のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は3つである。最大Temporal ID を示すLが2(またはM)であるともいえる。)
・L=3の構造:Temporal ID が0のピクチャ、1のピクチャ、2のピクチャ、および3(またはM)のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は4つである。最大Temporal ID を示すLが3(またはM)であるともいえる。)
・L=4の構造:Temporal ID が0のピクチャ、1のピクチャ、2のピクチャ、3のピクチャ、および、4(またはM)のピクチャで構成されるSOP 構造(つまり、同SOP に含まれるピクチャの段数は4つである。最大Temporal ID を示すLが4(またはM)であるともいえる。)
11 解析部
12 推定部
13 符号化構造決定部
14 伝送部
20 映像復号装置
21 復号部
100 映像符号化装置
101 符号化部
102 画面分割器
103 周波数変換/量子化器
104 逆量子化/逆周波数変換器
105 バッファ
106 予測器
107 エントロピー符号化器
111 解析部
112 判定部
113 M値決定部
200 映像復号装置
202 エントロピー復号器
203 逆量子化/逆周波数変換器
204 予測器
205 バッファ
401 音声符号化部
402 映像符号化部
403 多重化部
1001 プロセッサ
1002 プログラムメモリ
1003,10004 記憶媒体
Claims (4)
- ダイナミックレンジに関する映像信号の情報を用い、複数のSOP 構造を使用してビットストリームを生成する映像符号化方法であって、
時間方向で、符号化対象の映像信号がSDR (Standard Dynamic Range)からHDR (High Dynamic Rang )に切り替わるとき、または、HDR からSDR に切り替わるとき、前記ダイナミックレンジを切り替えるための前記ダイナミックレンジに関する映像信号の情報を伝送可能にするために、切り替わり後の先頭のSOP のSOP 構造をTemporal ID が0のピクチャだけで構成されるSOP 構造に設定する
ことを特徴とする映像符号化方法。 - ダイナミックレンジに関する映像信号の情報を用い、複数のSOP 構造を使用してビットストリームを生成する映像符号化装置であって、
時間方向で、符号化対象の映像信号がSDR (Standard Dynamic Range)からHDR (High Dynamic Rang )に切り替わるとき、または、HDR からSDRに切り替わるとき、前記ダイナミックレンジを切り替えるための前記ダイナミックレンジに関する映像信号の情報を伝送可能にするために、切り替わり後の先頭のSOP のSOP 構造をTemporal ID が0のピクチャだけで構成されるSOP 構造に設定する符号化構造制御手段を備える
ことを特徴とする映像符号化装置。 - ダイナミックレンジに関する映像信号の情報を用い、複数のSOP 構造を使用してビットストリームを生成する映像符号化装置におけるコンピュータに、
時間方向で、符号化対象の映像信号がSDR (Standard Dynamic Range)からHDR (High Dynamic Rang )に切り替わるとき、または、HDR からSDRに切り替わるとき、前記ダイナミックレンジを切り替えるための前記ダイナミックレンジに関する映像信号の情報を伝送可能にするために、切り替わり後の先頭のSOP のSOP 構造をTemporal ID が0のピクチャだけで構成されるSOP 構造に設定する処理を実行させるための
映像符号化プログラム。 - 請求項2に記載の映像符号化装置と、
音声信号を符号化する音声符号化部と、
前記映像符号化装置からのビットストリームと前記音声符号化部からのビットストリームとを多重化して出力する多重化部と
を備える映像システム。
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JP2015235525A JP6132006B1 (ja) | 2015-12-02 | 2015-12-02 | 映像符号化装置、映像システム、映像符号化方法、及び映像符号化プログラム |
CA3138227A CA3138227C (en) | 2015-12-02 | 2016-11-14 | Video encoding method, video encoding device, video decoding method, video decoding device, program, and video system |
KR1020207037536A KR102242880B1 (ko) | 2015-12-02 | 2016-11-14 | 비디오 인코딩 방법, 비디오 인코딩 디바이스, 비디오 디코딩 방법, 비디오 디코딩 디바이스, 및 컴퓨터 판독가능 정보 기록 매체 |
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CA3006941A CA3006941C (en) | 2015-12-02 | 2016-11-14 | Video encoding method, video encoding device, video decoding method, video decoding device, program, and video system |
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KR1020187014826A KR102198120B1 (ko) | 2015-12-02 | 2016-11-14 | 비디오 인코딩 방법, 비디오 인코딩 디바이스, 비디오 디코딩 방법, 비디오 디코딩 디바이스, 프로그램, 및 비디오 시스템 |
BR112018010465-5A BR112018010465B1 (pt) | 2015-12-02 | 2016-11-14 | Método de codificação de vídeo e dispositivo de codificação de vídeo para gerar um fluxo de bits e sistema de vídeo |
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US10979729B2 (en) * | 2016-11-30 | 2021-04-13 | Qualcomm Incorporated | Systems and methods for signaling and constraining a high dynamic range (HDR) video system with dynamic metadata |
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CN113824914B (zh) * | 2021-08-12 | 2022-06-28 | 荣耀终端有限公司 | 视频处理方法、装置、电子设备和存储介质 |
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KR101579831B1 (ko) * | 2011-10-20 | 2015-12-23 | 돌비 레버러토리즈 라이쎈싱 코오포레이션 | 비디오 등화를 위한 방법 및 시스템 |
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CN110415634A (zh) * | 2018-04-27 | 2019-11-05 | 苹果公司 | 用于高动态范围显示器的标准和高动态范围显示***和方法 |
CN111083480A (zh) * | 2019-12-10 | 2020-04-28 | 四川新视创伟超高清科技有限公司 | 一种基于cpu的8k超高清视频高速编码方法 |
CN111083480B (zh) * | 2019-12-10 | 2022-11-04 | 四川新视创伟超高清科技有限公司 | 一种基于cpu的8k超高清视频高速编码方法 |
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