JP7304419B2 - 送信装置、送信方法及びプログラム - Google Patents
送信装置、送信方法及びプログラム Download PDFInfo
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- 230000003111 delayed effect Effects 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/107—Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/174—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
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Description
Claims (6)
- フレームバッファに描画されたフレーム画像を順次取得する取得部と、
グラデュアルデコーダリフレッシュ(GDR)を利用するか否かを決定する決定部と、
前記決定に応じて、前記フレーム画像を、通常のIフレーム、又は、GDRにおけるIスライスを含むデータのいずれかにエンコードするエンコード処理部と、
前記Iフレーム、又は、前記Iスライスを含むデータを送信する送信部と、を含み、
前記決定部は、過去の単位時間あたりに前記Iフレーム若しくは前記Iスライスを含むデータの欠落が発生した回数、又は、過去の単位時間あたりに前記Iフレームが生成された回数のうちの少なくとも一方に基づいて、GDRを利用するか否かを決定する、
ことを特徴とする送信装置。 - 前記エンコード処理部は、前記フレーム画像が通常のIフレームにエンコードされる場合に、当該フレーム画像の次の少なくとも1つのフレーム画像のエンコードをスキップする、
ことを特徴とする請求項1に記載の送信装置。 - 前記エンコード処理部は、前記Iフレームのデータサイズと、転送可能帯域と、に基づいて決定されるフレーム数のフレーム画像のエンコードをスキップする、
ことを特徴とする請求項2に記載の送信装置。 - 前記送信部は、転送可能帯域に応じたデータレートで前記Iフレーム、又は、前記Iスライスを含むデータを送信する、
ことを特徴とする請求項1から3のいずれか一項に記載の送信装置。 - フレームバッファに描画されたフレーム画像を順次取得するステップと、
グラデュアルデコーダリフレッシュ(GDR)を利用するか否かを決定するステップと、
前記決定に応じて、前記フレーム画像を、通常のIフレーム、又は、GDRにおけるIスライスを含むデータのいずれかにエンコードするステップと、
前記Iフレーム、又は、前記Iスライスを含むデータを送信するステップと、を含み、
前記決定するステップでは、過去の単位時間あたりに前記Iフレーム若しくは前記Iスライスを含むデータの欠落が発生した回数、又は、過去の単位時間あたりに前記Iフレームが生成された回数のうちの少なくとも一方に基づいて、GDRを利用するか否かが決定される、
ことを特徴とする送信方法。 - フレームバッファに描画されたフレーム画像を順次取得する手順、
グラデュアルデコーダリフレッシュ(GDR)を利用するか否かを決定する手順、
前記決定に応じて、前記フレーム画像を、通常のIフレーム、又は、GDRにおけるIスライスを含むデータのいずれかにエンコードする手順、
前記Iフレーム、又は、前記Iスライスを含むデータを送信する手順、をコンピュータに実行させ、
前記決定する手順では、過去の単位時間あたりに前記Iフレーム若しくは前記Iスライスを含むデータの欠落が発生した回数、又は、過去の単位時間あたりに前記Iフレームが生成された回数のうちの少なくとも一方に基づいて、GDRを利用するか否かが決定される、
ことを特徴とするプログラム。
Applications Claiming Priority (3)
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JP2019163117 | 2019-09-06 | ||
JP2019163117 | 2019-09-06 | ||
PCT/JP2020/032657 WO2021044974A1 (ja) | 2019-09-06 | 2020-08-28 | 送信装置、受信装置、送信方法、受信方法及びプログラム |
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JPWO2021044974A1 JPWO2021044974A1 (ja) | 2021-03-11 |
JP7304419B2 true JP7304419B2 (ja) | 2023-07-06 |
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US (1) | US20220279190A1 (ja) |
JP (1) | JP7304419B2 (ja) |
WO (1) | WO2021044974A1 (ja) |
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JP2009105970A (ja) | 2003-06-19 | 2009-05-14 | Nokia Corp | 漸進的デコーダリフレッシュに基づくストリーム切り換え |
JP2010232720A (ja) | 2009-03-25 | 2010-10-14 | Toshiba Corp | 画像符号化方法および画像復号化方法 |
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2020
- 2020-08-28 WO PCT/JP2020/032657 patent/WO2021044974A1/ja active Application Filing
- 2020-08-28 US US17/638,020 patent/US20220279190A1/en active Pending
- 2020-08-28 JP JP2021543739A patent/JP7304419B2/ja active Active
Patent Citations (5)
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JP2002158969A (ja) | 2000-11-22 | 2002-05-31 | Nec Corp | 動画像符号化データ変換装置及びその方法 |
JP2004215252A (ja) | 2002-12-23 | 2004-07-29 | Polycom Inc | ビデオエラー隠蔽のための動的イントラ符号化マクロブロックリフレッシュインターバル |
JP2009105970A (ja) | 2003-06-19 | 2009-05-14 | Nokia Corp | 漸進的デコーダリフレッシュに基づくストリーム切り換え |
WO2009044475A1 (ja) | 2007-10-04 | 2009-04-09 | Fujitsu Limited | 符号化装置、符号化方法、符号化プログラムおよび符号化回路 |
JP2010232720A (ja) | 2009-03-25 | 2010-10-14 | Toshiba Corp | 画像符号化方法および画像復号化方法 |
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US20220279190A1 (en) | 2022-09-01 |
JPWO2021044974A1 (ja) | 2021-03-11 |
WO2021044974A1 (ja) | 2021-03-11 |
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