知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

33 records (took 0.015 seconds)

    Logical intra mode naming in HEVC video coding
    1.
    发明授权
    Logical intra mode naming in HEVC video coding 有权

    公开(公告)号：US11412255B2

    公开(公告)日：2022-08-09

    申请号：US17195854

    申请日：2021-03-09

    Applicant: SONY CORPORATION

    Inventor： Ehsan Maani ,  Ali J Tabatabai ,  Jun Xu

    IPC: H04N19/593 ,  H04N19/70 ,  H04N19/61 ,  H04N19/463

    Abstract: A method and apparatus of using logical mode numbers during both prediction and coding in the bit stream, such as for high efficiency video coders (HEVC). These logical intra mode numbers are sorted based on angle which as a result leads to improved coding designs with fewer and smaller look-up tables, and a small gain in coding efficiency. Furthermore, by using this type of naming, the number of most probable modes (MPMs) can be readily extended since no additional tables are required. The use of three MPMs achieves a larger gain of 0.25% and 0.31% for the AI_HE and AI_LC cases, respectively.

    LOGICAL INTRA MODE NAMING IN HEVC VIDEO CODING
    5.
    发明申请
    LOGICAL INTRA MODE NAMING IN HEVC VIDEO CODING 审中-公开

    公开(公告)号：US20160127743A1

    公开(公告)日：2016-05-05

    申请号：US14930861

    申请日：2015-11-03

    Applicant: SONY CORPORATION

    Inventor： Ehsan Maani ,  Ali Tabatabai ,  Jun Xu

    IPC: H04N19/593 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70

    Abstract: A method and apparatus of using logical mode numbers during both prediction and coding in the bit stream, such as for high efficiency video coders (HEVC). These logical intra mode numbers are sorted based on angle which as a result leads to improved coding designs with fewer and smaller look-up tables, and a small gain in coding efficiency. Furthermore, by using this type of naming, the number of most probable modes (MPMs) can be readily extended since no additional tables are required. The use of three MPMs achieves a larger gain of 0.25% and 0.31% for the AI_HE and AI_LC cases, respectively.

    Logical intra mode naming in HEVC video coding
    6.
    发明授权
    Logical intra mode naming in HEVC video coding 有权
    HEVC视频编码中的逻辑帧内模式命名

    公开(公告)号：US09210438B2

    公开(公告)日：2015-12-08

    申请号：US13674646

    申请日：2012-11-12

    Applicant: SONY CORPORATION

    Inventor： Ehsan Maani ,  Ali Tabatabai ,  Jun Xu

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/463 ,  H04N19/70 ,  H04N19/593

    CPC classification number: H04N19/593 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70

    Abstract: A method and apparatus of using logical mode numbers during both prediction and coding in the bit stream, such as for high efficiency video coders (HEVC). These logical intra mode numbers are sorted based on angle which as a result leads to improved coding designs with fewer and smaller look-up tables, and a small gain in coding efficiency. Furthermore, by using this type of naming, the number of most probable modes (MPMs) can be readily extended since no additional tables are required. The use of three MPMs achieves a larger gain of 0.25% and 0.31% for the AI_HE and AI_LC cases, respectively.

    Abstract translation: 在诸如用于高效率视频编码器（HEVC）的比特流中的预测和编码期间都使用逻辑模式号的方法和装置。 这些逻辑内部模式编号基于角度进行排序，其结果导致具有更少和更小的查找表的改进的编码设计，以及编码效率的小增益。 此外，通过使用这种类型的命名，可以容易地扩展最可能模式（MPM）的数量，因为不需要额外的表。 对于AI_HE和AI_LC病例，使用三个MPM分别实现了0.25％和0.31％的较大增益。

    Flexible band offset mode in sample adaptive offset in HEVC
    7.
    发明授权
    Flexible band offset mode in sample adaptive offset in HEVC 有权
    HEVC样本自适应偏移中的灵活带偏移模式

    公开(公告)号：US09161035B2

    公开(公告)日：2015-10-13

    申请号：US13674653

    申请日：2012-11-12

    Applicant: SONY CORPORATION

    Inventor： Ehsan Maani ,  Ali Tabatabai ,  Jun Xu

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/44 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/82 ,  H04N19/86

    CPC classification number: H04N19/44 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/50 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

    Abstract: A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5.

    Abstract translation: 一种灵活的带偏移（FBO）装置和方法，用于根据高效率视频编码（HEVC）标准以及类似配置的编码装置在编码器和解码器内进行采样自适应偏移（SAO）滤波。 减少了带宽偏移（BO）模式的数量和必要的偏移量。 本发明有利地提供了更简单的编码，减少了临时缓冲区大小的要求，并且与现有的HEV测试模型HM5的SAO技术相比可以产生小的性能增益。

    Logical intra mode naming in HEVC video coding
    8.
    发明授权
    Logical intra mode naming in HEVC video coding 有权

    公开(公告)号：US10567795B2

    公开(公告)日：2020-02-18

    申请号：US14930861

    申请日：2015-11-03

    Applicant: SONY CORPORATION

    Inventor： Ehsan Maani ,  Ali Tabatabai ,  Jun Xu

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/593 ,  H04N19/70 ,  H04N19/463 ,  H04N19/61

    Abstract: A method and apparatus of using logical mode numbers during both prediction and coding in the bit stream, such as for high efficiency video coders (HEVC). These logical intra mode numbers are sorted based on angle which as a result leads to improved coding designs with fewer and smaller look-up tables, and a small gain in coding efficiency. Furthermore, by using this type of naming, the number of most probable modes (MPMs) can be readily extended since no additional tables are required. The use of three MPMs achieves a larger gain of 0.25% and 0.31% for the AI_HE and AI_LC cases, respectively.

    Codeword space reduction for intra chroma mode signaling for HEVC
    9.
    发明授权
    Codeword space reduction for intra chroma mode signaling for HEVC 有权

    公开(公告)号：US10123026B2

    公开(公告)日：2018-11-06

    申请号：US15452544

    申请日：2017-03-07

    Applicant: SONY CORPORATION

    Inventor： Ehsan Maani ,  Wei Liu ,  Lina Dong ,  Ali Tabatabai

    IPC: H04N19/186 ,  H04N19/159 ,  H04N19/593

    Abstract: Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 7 different modes defined in AVC: vertical, horizontal, DC, diagonal directions, and “same as luma”. Statistics show that the “same as luma” mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard.

Patent Agency Ranking