Method of encoding flags in layer using inter-layer correlation, method and apparatus for decoding coded flags
    42.
    发明申请
    Method of encoding flags in layer using inter-layer correlation, method and apparatus for decoding coded flags 审中-公开
    使用层间相关编码层中标记的方法,用于解码编码标志的方法和装置

    公开(公告)号:US20070086516A1

    公开(公告)日:2007-04-19

    申请号:US11476103

    申请日:2006-06-28

    IPC分类号: H04B1/66 H04N7/12

    摘要: A method and apparatus for efficiently encoding diverse flags being used in a multilayer-based scalable video codec, based on an inter-layer correlation. The encoding method includes judging whether flags of a current layer included in a specified unit area are all equal to flags of a base layer, setting a specified prediction flag according to the result of judgment, and if it is judged that the flags of the current layer are equal to the flags of the base layer, skipping the flags of the current layer and inserting the flags of the base layer and the prediction flag into a bitstream.

    摘要翻译: 一种用于在基于层间相关性的基于多层的可伸缩视频编解码器中有效地编码各种标记的方法和装置。 编码方法包括:判断包含在指定单位区域中的当前层的标志是否全部等于基本层的标志,根据判断结果设定指定的预测标志,如果判断为当前的标志 层等于基本层的标志,跳过当前层的标志,并将基本层的标志和预测标记插入到比特流中。

    Method and apparatus for entropy encoding and entropy decoding fine-granularity scalability layer video data
    43.
    发明申请
    Method and apparatus for entropy encoding and entropy decoding fine-granularity scalability layer video data 审中-公开
    用于熵编码和熵解码细粒度可扩展层视频数据的方法和装置

    公开(公告)号:US20070071088A1

    公开(公告)日:2007-03-29

    申请号:US11525912

    申请日:2006-09-25

    IPC分类号: H04B1/66 H04N11/04

    摘要: Methods and apparatuses for entropy encoding and decoding Fine-granularity Scalability (FGS) layer video data are provided. The encoding method includes extracting residual data between a first block and a second block in a layer lower than the FGS layer corresponding to the first block; obtaining transform coefficients; dividing the transform coefficients in the first block into at least two subblocks; calculating the length of a prefix of first coefficients in the subblocks; and combining the prefix with a suffix used to distinguish the first coefficients; and VLC encoding the first coefficients. The encoding apparatus includes a subblock divider, a prefix generator, and a significant coefficient encoding unit. The decoding method includes calculating a range of a transform coefficient using a length of a prefix of the transform coefficient; extracting a value of the transform coefficient; VLC decoding the value; and combining first and second subblocks having the decoded coefficients.

    摘要翻译: 提供熵编码和解码的方法和装置细粒度可扩展性(FGS)层视频数据。 所述编码方法包括:在与所述第一块相对应的所述FGS层以下的层中提取第一块与第二块之间的残差数据; 获得变换系数; 将第一块中的变换系数划分为至少两个子块; 计算子块中第一系数的前缀的长度; 以及将前缀与用于区分第一系数的后缀组合; 和VLC编码第一系数。 编码装置包括子块分割器,前缀生成器和有效系数编码单元。 解码方法包括使用变换系数的前缀的长度来计算变换系数的范围; 提取变换系数的值; VLC解码值; 以及组合具有解码系数的第一和第二子块。

    Method and apparatus for encoding and decoding video signal according to directional intra-residual prediction
    44.
    发明申请
    Method and apparatus for encoding and decoding video signal according to directional intra-residual prediction 有权
    根据定向残差预测对视频信号进行编码和解码的方法和装置

    公开(公告)号:US20070025439A1

    公开(公告)日:2007-02-01

    申请号:US11490199

    申请日:2006-07-21

    IPC分类号: H04B1/66 H04N11/04

    摘要: A method and apparatus for encoding and decoding a video signal according to directional intra-residual prediction. The video encoding method of the present invention includes calculating first residual data by performing directional intra-prediction on a first block of a base layer with reference to a second block of the base layer, calculating second residual data by performing directional intra-prediction on a third block of an enhancement layer that corresponds to the first block of the base layer with reference to a fourth block of the enhancement layer that corresponds to the second block of the base layer, and encoding the third block according to the directional intra-residual prediction by obtaining third residual data that is a difference between the first residual data and the second residual data.

    摘要翻译: 一种根据定向残差预测对视频信号进行编码和解码的方法和装置。 本发明的视频编码方法包括通过参照基本层的第二块对基本层的第一块进行定向帧内预测来计算第一残差数据,通过对基本层进行定向帧内预测来计算第二残差数据 增强层的第三块,其对应于基本层的第一块,参考对应于基本层的第二块的增强层的第四块,并且根据定向残差预测对第三块进行编码 通过获得作为第一残差数据和第二残差数据之间的差的第三残差数据。

    Video coding method and apparatus using multi-layer based weighted prediction
    45.
    发明申请
    Video coding method and apparatus using multi-layer based weighted prediction 审中-公开
    使用多层加权预测的视频编码方法和装置

    公开(公告)号:US20060291562A1

    公开(公告)日:2006-12-28

    申请号:US11454908

    申请日:2006-06-19

    摘要: A method and apparatus for efficiently encoding a plurality of layers using inter-layer information in a multi-layer based video codec are disclosed. The video encoding method includes operations of reading the weighting factors of one layer; performing motion compensation on reference frames for the current frame based on a motion vector; generating a predicted frame for the current frame by acquiring a weighted sum of the motion-compensated reference frames using the read weighting factors; and encoding the difference between the current frame and the predicted frame.

    摘要翻译: 公开了一种使用多层视频编解码器中的层间信息对多层进行有效编码的方法和装置。 视频编码方法包括读取一层加权因子的操作; 基于运动矢量对当前帧的参考帧执行运动补偿; 通过使用读取的加权因子获取运动补偿参考帧的加权和来产生当前帧的预测帧; 并对当前帧和预测帧之间的差进行编码。

    Method and apparatus for compressing multi-layered motion vector
    46.
    发明申请
    Method and apparatus for compressing multi-layered motion vector 审中-公开
    用于压缩多层运动矢量的方法和装置

    公开(公告)号:US20060176957A1

    公开(公告)日:2006-08-10

    申请号:US11348316

    申请日:2006-02-07

    CPC分类号: H04N19/33 H04N19/51 H04N19/52

    摘要: A method of compressing a motion vector (MV) of a first macroblock when the region of a first lower layer corresponding to the first macroblock of a current layer frame does not have an MV is provided. The method includes interpolating the MV of a second macroblock to which the region belongs, based on the MV of at least one neighboring macroblock, and predicting the MV of the first macroblock using the interpolated MV.

    摘要翻译: 提供了当与当前层框架的第一宏块对应的第一下层的区域不具有MV时,压缩第一宏块的运动矢量(MV)的方法。 该方法包括基于至少一个相邻宏块的MV来内插该区域所属的第二宏块的MV,并且使用内插MV来预测第一宏块的MV。

    Video coding method and apparatus for efficiently predicting unsynchronized frame
    47.
    发明申请
    Video coding method and apparatus for efficiently predicting unsynchronized frame 审中-公开
    用于有效预测不同步帧的视频编码方法和装置

    公开(公告)号:US20060165303A1

    公开(公告)日:2006-07-27

    申请号:US11336953

    申请日:2006-01-23

    IPC分类号: G06K9/46

    摘要: A multi-layered video encoding method is provided wherein motion estimation is performed by using one of two frames of a lower layer temporally closest to an unsynchronized frame of a current layer as a reference frame. A virtual base layer frame at the same temporal location as that of the unsynchronized frame is generated using a motion vector obtained as a result of the motion estimation and the reference frame. The generated virtual base layer frame is subtracted from the unsynchronized frame to generate a difference, and the difference is encoded.

    摘要翻译: 提供了一种多层视频编码方法,其中通过使用时间上最接近当前层的不同步帧的下层的两个帧中的一个作为参考帧来执行运动估计。 使用作为运动估计和参考帧的结果获得的运动矢量来生成与非同步帧相同的时间位置的虚拟基本层帧。 从非同步帧中减去生成的虚拟基本层帧以产生差异,并且对差异进行编码。

    Video coding method and apparatus
    48.
    发明申请
    Video coding method and apparatus 审中-公开
    视频编码方法及装置

    公开(公告)号:US20060088222A1

    公开(公告)日:2006-04-27

    申请号:US11247147

    申请日:2005-10-12

    IPC分类号: G06K9/36

    摘要: A video coding method and apparatus are provided for improving compression efficiency or video/image quality by selecting a spatial transform method suitable for characteristics of an incoming video/image during video/image compression. The video coding apparatus includes a temporal transform module for removing temporal redundancy in an input frame to generate a residual frame, a wavelet transform module for performing wavelet transform on the residual frame to generate a wavelet coefficient, a Discrete Cosine Transform (DCT) module for performing DCT on the wavelet coefficient of each DCT block to create a DCT coefficient, and a quantization module for quantizing the DCT coefficient.

    摘要翻译: 提供一种用于通过在视频/图像压缩期间选择适合于输入视频/图像的特性的空间变换方法来提高压缩效率或视频/图像质量的视频编码方法和装置。 视频编码装置包括用于消除输入帧中的时间冗余以产生残余帧的时间变换模块,用于对残差帧执行小波变换以生成小波系数的小波变换模块,用于产生小波系数的离散余弦变换(DCT)模块 对每个DCT块的小波系数执行DCT以产生DCT系数,以及用于量化DCT系数的量化模块。

    Method and apparatus for effectively encoding multi-layered motion vectors
    49.
    发明申请
    Method and apparatus for effectively encoding multi-layered motion vectors 审中-公开
    用于有效地编码多层运动矢量的方法和装置

    公开(公告)号:US20060088102A1

    公开(公告)日:2006-04-27

    申请号:US11254642

    申请日:2005-10-21

    摘要: An apparatus and method for improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhanced layer from a motion vector in a base layer in a video coding method using a multi-layer structure are provided. The method includes obtaining a motion vector in a mother frame of a base layer that is temporally closest to an unsynchronized frame of a current layer, obtaining a predicted motion vector from the motion vector in the mother frame considering the referencing direction in the mother frame and in the unsynchronized frame and distances between the mother frame and a reference frame and between the unsynchronized frame and a reference frame, generating a residual between the motion vector in the unsynchronized frame and the predicted motion vector, and encoding the motion vector in the mother frame and the residual.

    摘要翻译: 提供一种用于通过使用多层结构的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来提高运动矢量的压缩效率的装置和方法。 该方法包括获得在时间上最接近当前层的非同步帧的基本层的母帧中的运动矢量,从母帧中的运动矢量中获取预测运动矢量,考虑母帧中的参考方向, 在母帧与参考帧之间以及非同步帧与参考帧之间的非同步帧和距离之间,产生非同步帧中的运动矢量与预测运动矢量之间的残差,并对母帧中的运动矢量进行编码 和剩余。

    Method and apparatus for predecoding and decoding bitstream including base layer
    50.
    发明申请
    Method and apparatus for predecoding and decoding bitstream including base layer 有权
    用于对包括基本层的比特流进行预解码和解码的方法和装置

    公开(公告)号:US20060013300A1

    公开(公告)日:2006-01-19

    申请号:US11180634

    申请日:2005-07-14

    申请人: Woo-jin Han

    发明人: Woo-jin Han

    摘要: A method and apparatus for extracting a higher quality video stream for a given bit-rate by replacing a specific frame by a base layer frame at a predecoder are provided. A predecoding method performed by the predecoder includes selecting a mode by determining frames to be skipped according to a predetermined criterion among frames located at positions where the base layer exists, and extracting a portion of the bitstream according to the selected mode and extraction conditions.

    摘要翻译: 提供了一种用于通过在预解码器处由基本层帧替换特定帧来为给定比特率提取较高质量视频流的方法和装置。 由预解码器执行的预解码方法包括:通过根据位于基层存在的位置的帧中的预定标准来确定要跳过的帧来选择模式,并且根据所选择的模式和提取条件提取比特流的一部分。