JPWO2020000019A5 - - Google Patents
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- JPWO2020000019A5 JPWO2020000019A5 JP2020563622A JP2020563622A JPWO2020000019A5 JP WO2020000019 A5 JPWO2020000019 A5 JP WO2020000019A5 JP 2020563622 A JP2020563622 A JP 2020563622A JP 2020563622 A JP2020563622 A JP 2020563622A JP WO2020000019 A5 JPWO2020000019 A5 JP WO2020000019A5
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Description
本開示の一態様は、ビットストリームから画像内の変換ブロックを復号する方法であって、前記ビットストリームから少なくとも１つのトランケーテッド・ユーナリの符号を復号する第１復号工程と、前記１つのトランケーテッド・ユーナリの符号を用いて、復号対象の変換ブロックのための水平変換タイプおよび垂直変換タイプの両方を決定する決定工程とを有し、前記１つのトランケーテッド・ユーナリの符号は、前記水平変換タイプと前記垂直変換タイプとで異なる変換タイプを指定可能であり、前記方法はさらに、決定された前記水平変換タイプおよび前記垂直変換タイプを前記復号対象の変換ブロックに適用して変換処理を実行することによって、前記復号対象の変換ブロックを復号する第２復号工程を有することを特徴とする。
また、本開示の一態様は、画像内の変換ブロックを符号化して、復号方法において復号されるビットストリームを生成する方法であって、符号化対象の変換ブロックのための水平変換タイプを決定する第１決定工程と、前記符号化対象の変換ブロックのための垂直変換タイプを決定する第２決定工程と、決定された前記水平変換タイプおよび前記垂直変換タイプを前記符号化対象の変換ブロックに適用して変換処理を実行することによって、前記符号化対象の変換ブロックを符号化する第１符号化工程と、少なくとも１つのトランケーテッド・ユーナリの符号を前記ビットストリームに符号化する第２符号化工程とを有し、前記１つのトランケーテッド・ユーナリの符号は、前記符号化対象の変換ブロックのための水平変換タイプおよび垂直変換タイプの両方を指定可能であり、前記１つのトランケーテッド・ユーナリの符号は、前記水平変換タイプと前記垂直変換タイプとで異なる変換タイプを指定可能であることを特徴とする。
One aspect of the present disclosure is a method of decoding a conversion block in an image from a bitstream, which comprises a first decoding step of decoding at least one channeled unitary code from the bitstream, and the one transistor. It has a determination step of determining both a horizontal conversion type and a vertical conversion type for the conversion block to be decoded by using the code of the categorized unity, and the code of the one transcribed unity is described above. It is possible to specify different conversion types for the horizontal conversion type and the vertical conversion type, and the method further applies the determined horizontal conversion type and the vertical conversion type to the conversion block to be decoded to perform the conversion process. It is characterized by having a second decoding step of decoding the conversion block to be decoded by executing the execution.
Further, one aspect of the present disclosure is a method of encoding a conversion block in an image to generate a bit stream to be decoded in the decoding method, and determining a horizontal conversion type for the conversion block to be encoded. The first determination step, the second determination step of determining the vertical conversion type for the conversion block to be coded, and the determined horizontal conversion type and the vertical conversion type are applied to the conversion block to be coded. A first coding step for encoding the conversion block to be encoded and a second coding for encoding the code of at least one truncated utility into the bit stream by executing the conversion process. The code of the one truncated utility can specify both a horizontal conversion type and a vertical conversion type for the conversion block to be encoded, and the one truncated unit. The unity code is characterized in that different conversion types can be specified between the horizontal conversion type and the vertical conversion type.
Claims (11)
前記ビットストリームから少なくとも１つのトランケーテッド・ユーナリの符号を復号する第１復号工程と、
前記１つのトランケーテッド・ユーナリの符号を用いて、復号対象の変換ブロックのための水平変換タイプおよび垂直変換タイプの両方を決定する決定工程と
を有し、
前記１つのトランケーテッド・ユーナリの符号は、前記水平変換タイプと前記垂直変換タイプとで異なる変換タイプを指定可能であり、
前記方法はさらに、決定された前記水平変換タイプおよび前記垂直変換タイプを前記復号対象の変換ブロックに適用して変換処理を実行することによって、前記復号対象の変換ブロックを復号する第２復号工程を有することを特徴とする方法。 A method of decoding a conversion block in an image from a bitstream,
A first decoding step of decoding at least one truncated unity code from the bitstream,
With the determination step of determining both the horizontal conversion type and the vertical conversion type for the conversion block to be decoded using the code of the one truncated utility.
Have,
The code of the one truncated utility can specify different conversion types for the horizontal conversion type and the vertical conversion type.
The method further comprises a second decoding step of decoding the conversion block to be decoded by applying the determined horizontal conversion type and the vertical conversion type to the conversion block to be decoded and executing the conversion process. A method characterized by having.
前記複数のビンの算術復号のために用いられる複数のコンテキスト値は、それぞれ異なることを特徴とする請求項１に記載の方法。 The code of the one truncated utility is a code using a bin string that can contain a plurality of bins.
The method according to claim 1, wherein the plurality of context values used for arithmetically decoding the plurality of bins are different from each other .
符号化対象の変換ブロックのための水平変換タイプを決定する第１決定工程と、The first determination step of determining the horizontal transformation type for the transformation block to be encoded,
前記符号化対象の変換ブロックのための垂直変換タイプを決定する第２決定工程と、A second determination step of determining the vertical conversion type for the conversion block to be encoded,
決定された前記水平変換タイプおよび前記垂直変換タイプを前記符号化対象の変換ブロックに適用して変換処理を実行することによって、前記符号化対象の変換ブロックを符号化する第１符号化工程と、A first coding step of encoding the conversion block to be encoded by applying the determined horizontal conversion type and the vertical conversion type to the conversion block to be encoded and executing the conversion process.
少なくとも１つのトランケーテッド・ユーナリの符号を前記ビットストリームに符号化する第２符号化工程とA second coding step that encodes at least one transcribed unity code into the bitstream.
を有し、Have,
前記１つのトランケーテッド・ユーナリの符号は、前記符号化対象の変換ブロックのための水平変換タイプおよび垂直変換タイプの両方を指定可能であり、前記１つのトランケーテッド・ユーナリの符号は、前記水平変換タイプと前記垂直変換タイプとで異なる変換タイプを指定可能であるThe code of the one truncated unitary can specify both a horizontal conversion type and a vertical conversion type for the conversion block to be encoded, and the code of the one truncated unitary is the above-mentioned. It is possible to specify different conversion types for the horizontal conversion type and the vertical conversion type.
ことを特徴とする方法。A method characterized by that.
前記複数のビンの算術符号化のために用いられる複数のコンテキスト値は、それぞれ異なるThe plurality of context values used for the arithmetic coding of the plurality of bins are different from each other.
ことを特徴とする請求項５に記載の方法。The method according to claim 5, wherein the method is characterized by the above.
ことを特徴とする請求項５に記載の方法。The method according to claim 5, wherein the method is characterized by the above.
前記ビットストリームから少なくとも１つのトランケーテッド・ユーナリの符号を復号する第１復号手段と、A first decoding means that decodes the code of at least one truncated utility from the bitstream,
前記１つのトランケーテッド・ユーナリの符号を用いて、復号対象の変換ブロックのための水平変換タイプおよび垂直変換タイプの両方を決定する決定手段とAs a determination means for determining both the horizontal conversion type and the vertical conversion type for the conversion block to be decoded by using the code of the one truncated utility.
を有し、Have,
前記１つのトランケーテッド・ユーナリの符号は、前記水平変換タイプと前記垂直変換タイプとで異なる変換タイプを指定可能であり、The code of the one truncated utility can specify different conversion types for the horizontal conversion type and the vertical conversion type.
前記復号装置はさらに、決定された前記水平変換タイプおよび前記垂直変換タイプを前記復号対象の変換ブロックに適用して変換処理を実行することによって、前記復号対象の変換ブロックを復号する第２復号手段を有することを特徴とする復号装置。The decoding device further applies the determined horizontal conversion type and the vertical conversion type to the conversion block to be decoded and executes the conversion process to decode the conversion block to be decoded. A decoding device characterized by having.
符号化対象の変換ブロックのための水平変換タイプを決定する第１決定手段と、A first determination means for determining the horizontal transformation type for the transformation block to be encoded, and
前記符号化対象の変換ブロックのための垂直変換タイプを決定する第２決定手段と、A second determination means for determining the vertical conversion type for the conversion block to be encoded,
決定された前記水平変換タイプおよび前記垂直変換タイプを前記符号化対象の変換ブロックに適用して変換処理を実行することによって、前記符号化対象の変換ブロックを符号化する第１符号化手段と、A first coding means for encoding the conversion block to be coded by applying the determined horizontal conversion type and the vertical conversion type to the conversion block to be coded and executing the conversion process.
少なくとも１つのトランケーテッド・ユーナリの符号を前記ビットストリームに符号化する第２符号化手段とAs a second coding means for encoding the code of at least one truncated utility into the bitstream.
を有し、Have,
前記１つのトランケーテッド・ユーナリの符号は、前記符号化対象の変換ブロックのための水平変換タイプおよび垂直変換タイプの両方を指定可能であり、前記１つのトランケーテッド・ユーナリの符号は、前記水平変換タイプと前記垂直変換タイプとで異なる変換タイプを指定可能であるThe code of the one truncated unitary can specify both a horizontal conversion type and a vertical conversion type for the conversion block to be encoded, and the code of the one truncated unitary is the above-mentioned. It is possible to specify different conversion types for the horizontal conversion type and the vertical conversion type.
ことを特徴とする符号化装置。A coding device characterized by that.
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| JP2023183527A JP2023179798A (en) | 2018-06-29 | 2023-10-25 | Method, apparatus and system for encoding and decoding transformed block of video samples |
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| AU2018204786A AU2018204786A1 (en) | 2018-06-29 | 2018-06-29 | Method, apparatus and system for encoding and decoding a transformed block of video samples |
| PCT/AU2019/050534 WO2020000019A1 (en) | 2018-06-29 | 2019-05-29 | Method, apparatus and system for encoding and decoding a transformed block of video samples |
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| EP (1) | EP3815362A4 (en) |
| JP (2) | JP2021530124A (en) |
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| CN (6) | CN117560513A (en) |
| AU (1) | AU2018204786A1 (en) |
| BR (1) | BR112020024151A2 (en) |
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| BR112021010602A2 (en) * | 2018-12-26 | 2021-08-24 | Panasonic Intellectual Property Corporation Of America | Three-dimensional data encoding method, three-dimensional data decoding method, three-dimensional data encoding device, and three-dimensional data decoding device |
| WO2020141892A1 (en) * | 2019-01-01 | 2020-07-09 | 엘지전자 주식회사 | Image coding method based on secondary transform and device therefor |
| TWI737143B (en) * | 2019-01-25 | 2021-08-21 | 聯發科技股份有限公司 | Method and apparatus of transform coefficient coding with tb-level constraint |
| WO2020156454A1 (en) * | 2019-01-31 | 2020-08-06 | Mediatek Inc. | Method and apparatus of transform type assignment for intra sub-partition in video coding |
| JP2022527774A (en) * | 2019-03-26 | 2022-06-06 | エルジー エレクトロニクス インコーポレイティド | Video coding method based on conversion and its equipment |
| CN114026862A (en) * | 2019-06-21 | 2022-02-08 | 松下电器（美国）知识产权公司 | System and method for video coding |
| JP7453581B2 (en) * | 2020-02-25 | 2024-03-21 | 日本電信電話株式会社 | Encoding method, encoding device and program |
| WO2022109910A1 (en) * | 2020-11-26 | 2022-06-02 | 深圳市大疆创新科技有限公司 | Video encoding method, apparatus, and encoder, and storage medium |
| CN114900703A (en) * | 2022-03-31 | 2022-08-12 | 中南大学 | Universal video coding system and data processing method |
| WO2024020117A1 (en) * | 2022-07-19 | 2024-01-25 | Google Llc | Dependent context model for transform types |
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| KR101847365B1 (en) | 2012-04-13 | 2018-04-09 | 미쓰비시덴키 가부시키가이샤 | Moving image encoding device, moving image decoding device, moving image encoding method, moving image decoding method and storage medium |
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