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    • 44. 发明申请
    • Method, medium, and apparatus for encoding and/or decoding video
    • 用于编码和/或解码视频的方法,介质和装置
    • US20090110054A1
    • 2009-04-30
    • US12213017
    • 2008-06-12
    • Dae-hee KimDae-sung ChoWoong-il Choi
    • Dae-hee KimDae-sung ChoWoong-il Choi
    • H04N7/26
    • H04N19/00321H04N19/184H04N19/186H04N19/187H04N19/33H04N19/59H04N19/61H04N19/63H04N19/645H04N19/647
    • A method, medium, and apparatus for encoding and/or decoding video by generating a scalable bitstream formed with a base layer bitstream and an enhancement layer bitstream, in order to provide forward compatibility, is described. The method includes reconstructing an image having an extended bit-depth and an extended video format into an image having a base bit-depth and a base video format, encoding the reconstructed image, and as a result of the encoding of the image having the base bit-depth and the base video format, generating a base layer bitstream, and reconstructing the image having the extended bit-depth and extended video format into an image having the extended bit-depth and the base video format, and by using the result of the encoding of the image having the base bit-depth and the base video format, encoding the image having the extended bit-depth and the base video format, and generating an enhancement layer bitstream with a result of the encoding of the image having the extended bit-depth and the base video format and additional data required for the extended video format.
    • 描述了通过生成形成有基本层比特流和增强层比特流的可分级比特流来编码和/或解码视频的方法,介质和装置,以提供向前兼容性。 该方法包括将具有扩展位深度和扩展视频格式的图像重建为具有基本位深度和基本视频格式的图像,对重建图像进行编码,并且作为具有基底的图像的编码结果 比特深度和基本视频格式,生成基本层比特流,并将具有扩展比特深度和扩展视频格式的图像重构为具有扩展比特深度和基本视频格式的图像,并且使用 具有基本位深度和基本视频格式的图像的编码,对具有扩展位深度的图像和基本视频格式进行编码,以及生成具有扩展的图像的编码结果的增强层比特流 位深度和基本视频格式以及扩展视频格式所需的附加数据。
    • 45. 发明授权
    • Method and apparatus for encoding and decoding motion vectors
    • 用于编码和解码运动矢量的方法和装置
    • US07447370B2
    • 2008-11-04
    • US11773297
    • 2007-07-03
    • Woong-il ChoiByeung-woo Jēon
    • Woong-il ChoiByeung-woo Jēon
    • G06K9/36
    • H04N19/61H04N19/503H04N19/52
    • There is provided a method and apparatus for encoding and decoding motion vectors. Motion vectors are encoded through the steps of: (a) predicting motion vectors of a type identical to that of a present block and obtaining predictive motion vectors with respect to neighbor blocks having motion vectors of a type different from that of the present block among a plurality of neighbor blocks adjacent to the present block; (b) calculating a representative value of the motion vectors of the type identical to that of the present block from the motion vectors of the neighbor blocks and the predictive motion vectors; (c) calculating a difference value between the calculated representative value and the motion vector of the present block; and (d) encoding the calculated difference value. The motion vectors can be more efficiently encoded even when they refer to different reference pictures.
    • 提供了一种用于对运动矢量进行编码和解码的方法和装置。 运动矢量通过以下步骤进行编码:(a)预测与当前块相同类型的运动矢量,并获得相对于具有不同于当前块类型的运动矢量的相邻块的预测运动矢量 与当前块相邻的多个相邻块; (b)从相邻块和预测运动矢量的运动矢量中计算与当前块相同类型的运动矢量的代表值; (c)计算所计算的代表值与当前块的运动矢量之间的差值; 和(d)对所计算的差值进行编码。 运动矢量即使在参考不同的参考图像时也能被更有效地编码。
    • 50. 发明授权
    • Video encoding apparatus and method and video decoding apparatus and method
    • 视频编码装置及方法及视频解码装置及方法
    • US08331433B2
    • 2012-12-11
    • US11896443
    • 2007-08-31
    • Dae-hee KimHyun-mun KimDae-sung ChoWoong-il ChoiJae-woo Jung
    • Dae-hee KimHyun-mun KimDae-sung ChoWoong-il ChoiJae-woo Jung
    • H04B1/66
    • H04N19/36H04N19/124H04N19/184H04N19/186H04N19/187H04N19/59H04N19/61
    • A video encoding apparatus and method and a video decoding apparatus and method are provided. The video encoding apparatus includes a base layer encoding unit generating a base layer bitstream including a quantization level of video data and a base quantization parameter corresponding to a base bit-depth, an enhancement layer encoding unit generating an enhancement layer bitstream including a refined quantization parameter for refining the difference between an extended bit-depth and the base bit-depth, and a bitstream combining unit combining the base layer bitstream and the enhancement layer bitstream to generate the scalable bitstream. The video decoding apparatus includes a base layer decoding unit decoding a base layer bitstream including a quantization level of video data and a base quantization parameter corresponding to a base bit-depth in a received bitstream to obtain a base restoration image, an enhancement layer decoding unit decoding an enhancement layer bitstream including a refined quantization parameter for refining the difference between an extended bit-depth and the base bit-depth in the received bitstream, and a bit-depth restoration unit obtaining an extended restoration image corresponding to an extended bit-depth by using the decoded quantization level, the decoded base quantization parameter, and the decoded refined quantization parameter.
    • 提供了视频编码装置和方法以及视频解码装置和方法。 该视频编码装置包括:基本层编码单元,生成包括视频数据的量化级别和与基本位深度相对应的基本量化参数的基本层位流;增强层编码单元,生成包含精细量化参数的增强层比特流 用于改善扩展位深度和基本位深度之间的差异;以及比特流组合单元,组合基本层比特流和增强层比特流以生成可缩放比特流。 视频解码装置包括:基本层解码单元,对包含视频数据的量化级别的基本层比特流和对应于接收比特流中的基本比特深度的基本量化参数进行解码,以获得基本恢复图像;增强层解码单元 解码包括精细化量化参数的增强层比特流,用于细化所接收的比特流中的扩展比特深度和基本比特深度之间的差异;以及比特深度恢复单元,获得对应于扩展比特深度的扩展恢复图像 通过使用解码的量化级,解码的基本量化参数和解码的精化量化参数。