WO2019182293A1 - Procédé et appareil de traitement de signal vidéo - Google Patents

Procédé et appareil de traitement de signal vidéo Download PDF

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Publication number
WO2019182293A1
WO2019182293A1 PCT/KR2019/003045 KR2019003045W WO2019182293A1 WO 2019182293 A1 WO2019182293 A1 WO 2019182293A1 KR 2019003045 W KR2019003045 W KR 2019003045W WO 2019182293 A1 WO2019182293 A1 WO 2019182293A1
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WO
WIPO (PCT)
Prior art keywords
region
face
padding
boundary
latitude
Prior art date
Application number
PCT/KR2019/003045
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English (en)
Korean (ko)
Inventor
이배근
Original Assignee
주식회사 케이티
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케이티 filed Critical 주식회사 케이티
Publication of WO2019182293A1 publication Critical patent/WO2019182293A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding

Definitions

  • An object of the present invention is to provide a method and apparatus for projection-converting a 360 degree image in two dimensions.
  • the encoding / decoding efficiency can be improved by projecting and converting a 360 degree image in two dimensions.
  • FIG. 8 is a flowchart illustrating operations of a 360 degree video data generating device and a 360 degree video playing device.
  • the entropy encoder 165 receives residual value coefficient information, block type information, prediction mode information, partition unit information, prediction unit information, transmission unit information, and motion of the coding unit from the reordering unit 160 and the prediction units 120 and 125.
  • Various information such as vector information, reference frame information, interpolation information of a block, and filtering information can be encoded.
  • the current picture in the 360 degree projection image may include at least one or more faces.
  • the number of faces may be 1, 2, 3, 4 or more natural numbers, depending on the projection method.
  • f may be set to a value equal to or smaller than the number of faces.
  • the current picture may include at least one or more faces having the same temporal order or output order (POC).
  • frame packing may be performed by adding a padding area between the faces. That is, a 360 degree projection image may be generated by adding a padding area to the face boundary.
  • 18 is a diagram illustrating an example in which padding is performed at a boundary of a face.
  • the length of the padding area between the faces may be set identically or differently depending on the position.
  • the length (i.e., horizontal length) n of the padding area where a given face is located on the left or right side and the horizontal length m of the padding area, which is located at the top or bottom of the predetermined face may have the same value or be different from each other. May have a value.
  • n and m are natural numbers greater than or equal to 0, and may have the same value, or one of m and n may have a smaller value than the other.
  • m and n may be encoded by the encoder and signaled through the bitstream.
  • the length n in the horizontal direction and the length m in the vertical direction may be predefined in the encoder and the decoder according to the projection transformation method, the position of the face, the size of the face or the shape of the face.
  • padding related information may be signaled through the bitstream.
  • the padding related information may include whether padding is performed, a location of a padding area, or a padding size.
  • the padding related information may be signaled in units of sequences, pictures, slices, or faces. For example, information indicating whether padding is performed on the upper boundary, the lower boundary, the left boundary, or the right boundary and the padding size may be signaled in units of paces.
  • padding regions are added to the three boundaries, and at the centered face (i.e., face 3 and face 4), the padding regions are at the two boundaries. Can be added. That is, the padding area may be added to the remaining boundary except for the boundary of adjacent faces.
  • the padding area may have a shape in which a region beyond the mxm square is deleted from the circular band area surrounding the active area of diameter m. Accordingly, padding regions may only be added to inactive regions within the high latitude region pace.
  • padding may be performed only at a boundary continuous with a high latitude region image in 3D space.
  • At least one of re-sizing or warping may be applied to at least one of a pace of a high latitude region or a pace of a mid-latitude region.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

La présente invention concerne un procédé de codage vidéo qui comprend les étapes consistant : à projeter une vidéo à 360 degrés sur un plan bidimensionnel et à transformer la vidéo à 360 degrés en une vidéo bidimensionnelle au moyen d'un procédé de transformation par projection SSP; et à coder la vidéo bidimensionnelle projetée et transformée sur le plan bidimensionnel. Ici, la vidéo bidimensionnelle projetée sur le plan bidimensionnel comprend des faces régionales de latitude élevée et des faces régionales de latitude médiane, les faces régionales de latitude élevée pouvant comprendre une zone active de forme circulaire, qui est créée par projection et transformation d'une région de latitude élevée de la vidéo à 360 degrés, et une zone inactive entre la face régionale à latitude élevée et la zone active.
PCT/KR2019/003045 2018-03-19 2019-03-15 Procédé et appareil de traitement de signal vidéo WO2019182293A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20180031545 2018-03-19
KR10-2018-0031545 2018-03-19

Publications (1)

Publication Number Publication Date
WO2019182293A1 true WO2019182293A1 (fr) 2019-09-26

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PCT/KR2019/003045 WO2019182293A1 (fr) 2018-03-19 2019-03-15 Procédé et appareil de traitement de signal vidéo

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KR (1) KR20190110042A (fr)
WO (1) WO2019182293A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114189697A (zh) * 2021-12-03 2022-03-15 腾讯科技（深圳）有限公司 一种视频数据处理方法、装置以及可读存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150341552A1 (en) * 2014-05-21 2015-11-26 Here Global B.V. Developing a Panoramic Image
CN106358033A (zh) * 2016-08-25 2017-01-25 北京字节跳动科技有限公司 一种全景视频关键帧编码方法和装置
WO2017090988A1 (fr) * 2015-11-23 2017-06-01 한국전자통신연구원 Procédé de codage/décodage vidéo à points de vue multiples

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150341552A1 (en) * 2014-05-21 2015-11-26 Here Global B.V. Developing a Panoramic Image
WO2017090988A1 (fr) * 2015-11-23 2017-06-01 한국전자통신연구원 Procédé de codage/décodage vidéo à points de vue multiples
CN106358033A (zh) * 2016-08-25 2017-01-25 北京字节跳动科技有限公司 一种全景视频关键帧编码方法和装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LEE, YA-HSUAN ET AL.: "EE 4: ERP/EAP-based segmented sphere projection with different padding sizes", JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/EEC JTC 1/SC 29/WG 11. JVET-G0097 . 7TH MEETING, 21 July 2017 (2017-07-21), Torino, IT, XP030150896, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet> [retrieved on 20190604] *
YOON, YONG-UK ET AL.: "Methods of Padding Inactive Regions for Segmented Sphere Projection", JOINT VIDEO EXPLORATION TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/SEC JTC 1/SC 29/WG 11. JVET-I0023 . 9TH MEETING, 26 January 2018 (2018-01-26), Gwangju, KR ., XP030151133, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet> [retrieved on 20190604] *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114189697A (zh) * 2021-12-03 2022-03-15 腾讯科技（深圳）有限公司 一种视频数据处理方法、装置以及可读存储介质
CN114189697B (zh) * 2021-12-03 2022-10-14 腾讯科技（深圳）有限公司 一种视频数据处理方法、装置以及可读存储介质

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