VIDEO ENCODING AND DECODING METHOD AND APPARATUS
    81.
    发明申请
    VIDEO ENCODING AND DECODING METHOD AND APPARATUS 审中-公开
    视频编码和解码方法和设备

    公开(公告)号:US20080240246A1

    公开(公告)日:2008-10-02

    申请号:US12027410

    申请日:2008-02-07

    IPC分类号: H04N7/12

    摘要: Provided are a video encoding and decoding method and apparatus, in which a current block is divided into partitions based on an edge in the current block, and motion estimation is performed on the divided partitions. Video encoding efficiency can be improved by encoding partitions that are obtained by dividing the current block along a predetermined line passing through pixels belonging to an edge around the current block from among neighboring pixels around the current block.

    摘要翻译: 提供了一种视频编码和解码方法和装置,其中当前块基于当前块中的边缘被划分成分区,并且对划分的分区执行运动估计。 可以通过对通过当前块周围的相邻像素中沿着属于当前块周围的边缘的像素的预定线分割当前块而获得的分区来提高视频编码效率。

    METHOD OF AND APPARATUS FOR VIDEO ENCODING AND DECODING BASED ON MOTION ESTIMATION
    82.
    发明申请
    METHOD OF AND APPARATUS FOR VIDEO ENCODING AND DECODING BASED ON MOTION ESTIMATION 有权
    基于运动估计的视频编码和解码的方法和装置

    公开(公告)号:US20080107181A1

    公开(公告)日:2008-05-08

    申请号:US11936128

    申请日:2007-11-07

    IPC分类号: H04N7/26

    摘要: Provided is a method of and apparatus for video encoding and decoding based on motion estimation. The method includes generating a motion vector by searching a reference picture using pixels of a current block, generating a prediction motion vector that is a prediction value of the motion vector by searching the reference picture using previously encoded pixels located adjacent to the current block, and encoding the current block based on the motion vector and the prediction motion vector. By accurately predicting the motion vector of the current block, the number of bits required for encoding the motion vector can be reduced, thereby improving the compression rate of video data.

    摘要翻译: 提供了一种基于运动估计的用于视频编码和解码的方法和装置。 该方法包括通过使用当前块的像素搜索参考图像来生成运动矢量,通过使用与当前块相邻的先前编码的像素搜索参考图像来生成作为运动矢量的预测值的预测运动矢量,以及 基于运动矢量和预测运动矢量对当前块进行编码。 通过精确地预测当前块的运动矢量,可以减少编码运动矢量所需的位数,从而提高视频数据的压缩率。

    METHOD AND APPARATUS FOR ENTROPY ENCODING/DECODING
    83.
    发明申请
    METHOD AND APPARATUS FOR ENTROPY ENCODING/DECODING 失效
    用于入侵编码/解码的方法和装置

    公开(公告)号:US20080080620A1

    公开(公告)日:2008-04-03

    申请号:US11780990

    申请日:2007-07-20

    IPC分类号: H04N11/02 H04B1/66

    摘要: A method and apparatus are provided for performing entropy encoding on a fine granular scalability layer. A method of entropy encoding on a plurality of current coefficients of a quality layer among a plurality of quality layers of an image block divided into the plurality of quality layers, includes determining a coding pass with respect to each of the current coefficients, selecting a context model with respect to each of the current coefficients using at least one lower coefficient corresponding to each of the current coefficients if the coding pass is a refinement pass, and performing arithmetic encoding a group of coefficients having a same selected context model among the current coefficients by using the selected context model.

    摘要翻译: 提供了一种在细粒度可伸缩性层上进行熵编码的方法和装置。 对分割为多个质量层的图像块的多个质量层中的质量层的多个当前系数进行熵编码的方法包括确定关于每个当前系数的编码遍,选择上下文 使用与当前系数中的每一个相对应的至少一个较低系数的当前系数中的每一个的模型,并且在当前系数中对具有相同的所选上下文模型的一组系数进行算术编码, 使用所选择的上下文模型。

    Video coding method and apparatus supporting fast fine granular scalability
    84.
    发明申请
    Video coding method and apparatus supporting fast fine granular scalability 审中-公开
    支持快速细粒度可扩展性的视频编码方法和装置

    公开(公告)号:US20060245495A1

    公开(公告)日:2006-11-02

    申请号:US11410955

    申请日:2006-04-26

    IPC分类号: H04N11/04

    CPC分类号: H04N19/34 H04N19/187

    摘要: A method for reducing the amount of computations required for multilayer-based progressive fine granular scalability (PFGS) algorithm and a video coding method and apparatus employing the same method are provided. The video coding method supporting fine granular scalability (FGS) includes obtaining a predicted image for a current frame using a motion vector estimated at predetermined accuracy, quantizing a residual between the current frame and the predicted image, inversely quantizing the quantized residual, and generating a reconstructed image for the current frame, performing motion compensation on an FGS layer reference frame and a base layer reference frame using the estimated motion vector, calculating a residual between the motion-compensated FGS layer reference frame and the motion-compensated base layer reference frame, subtracting the reconstructed image for the current frame and the calculated residual from the current frame, and encoding the result of subtraction.

    摘要翻译: 提供了一种用于减少基于多层的逐行细粒度可缩放性(PFGS)算法所需的计算量和采用相同方法的视频编码方法和装置的方法。 支持精细粒度可缩放性(FGS)的视频编码方法包括使用以预定精度估计的运动矢量获取当前帧的预测图像,量化当前帧与预测图像之间的残差,逆量化量化残差,并产生 用于当前帧的重建图像,使用估计的运动矢量在FGS层参考帧和基本层参考帧上执行运动补偿,计算运动补偿FGS层参考帧和运动补偿基础层参考帧之间的残差, 从当前帧减去当前帧的重建图像和计算出的残差,并对相减结果进行编码。

    Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency and video coding and decoding methods and apparatuses using the same
    85.
    发明申请
    Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency and video coding and decoding methods and apparatuses using the same 审中-公开
    具有改进的编码效率的基于上下文的自适应算术编码和解码方法和装置以及使用其的视频编码和解码方法和装置

    公开(公告)号:US20060233240A1

    公开(公告)日:2006-10-19

    申请号:US11402934

    申请日:2006-04-13

    摘要: Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency using the same are provided. The context-based adaptive arithmetic coding method includes resetting a context model for the given slice to a context model for a slice coded temporally before the given slice, arithmetically encoding a data symbol of the given slice using the reset context model, and updating the context model using a value of the data symbol. The context-based adaptive arithmetic decoding method includes resetting a context model for the given slice to a context model coded temporally before the given slice, arithmetically decoding a bitstream corresponding to the given slice using the reset context model to generate a data symbol of the given slice, and updating the context model using a value of the data symbol.

    摘要翻译: 提供了具有改进的编码效率的基于上下文的自适应算术编码和解码方法和装置。 基于上下文的自适应算术编码方法包括将给定切片的上下文模型重置为在给定切片之前暂时编码的切片的上下文模型,使用重置上下文模型对给定切片的数据符号进行算术编码,以及更新上下文 模型使用数据符号的值。 基于上下文的自适应算术解码方法包括将给定切片的上下文模型重新设置为在给定切片之前暂时编码的上下文模型,使用复位上下文模型对对应于给定切片的比特流进行算术解码,以生成给定切片的数据符号 切片,并使用数据符号的值更新上下文模型。

    Video encoding/decoding method and apparatus using motion prediction between temporal levels
    86.
    发明申请
    Video encoding/decoding method and apparatus using motion prediction between temporal levels 审中-公开
    视频编码/解码方法和使用时间水平之间的运动预测的装置

    公开(公告)号:US20060209961A1

    公开(公告)日:2006-09-21

    申请号:US11378357

    申请日:2006-03-20

    摘要: A video encoding/decoding method and apparatus is disclosed that can efficiently compress/decompress motion vectors in a video codec including a hierarchical temporal level decomposition process. The video encoding method including a hierarchical temporal level decomposition process involves obtaining a predicted motion vector of a second frame, which exists at a present temporal level, from a first motion vector of a first frame that exists at a lower temporal level; obtaining a second motion vector of the second frame by performing a motion estimation in a predetermined motion search area using the predicted motion vector as a start point; and encoding the second frame using the obtained second motion vector.

    摘要翻译: 公开了可以有效地压缩/解压缩包括分层时间级别分解处理的视频编解码器中的运动矢量的视频编码/解码方法和装置。 包括分层时间级别分解处理的视频编码方法涉及从存在于较低时间级别的第一帧的第一运动矢量获得在当前时间级存在的第二帧的预测运动矢量; 通过使用预测的运动矢量作为起始点,在预定运动搜索区域中执行运动估计来获得第二帧的第二运动矢量; 以及使用所获得的第二运动矢量对所述第二帧进行编码。

    Method and apparatus for multi-layered video encoding and decoding
    87.
    发明申请
    Method and apparatus for multi-layered video encoding and decoding 审中-公开
    用于多层视频编码和解码的方法和装置

    公开(公告)号:US20060120450A1

    公开(公告)日:2006-06-08

    申请号:US11290515

    申请日:2005-12-01

    摘要: A video compression method, and more particularly, a prediction method for efficiently eliminating redundancy within a video frame, and a video compression method and an apparatus using the prediction method are provided. There is provided a method for encoding video based on a multi-layer structure, including performing intra-prediction on a current intra-block using images of neighboring intra-blocks of the current intra-block to obtain a prediction residual, performing prediction on the current intra-block using an image of a lower layer region corresponding to the current intra-block to obtain a prediction residual, selecting one of the two prediction residuals that offers higher coding efficiency, and encoding the selected prediction residual.

    摘要翻译: 提供一种视频压缩方法,更具体地,提供一种用于有效消除视频帧内的冗余的预测方法以及使用该预测方法的视频压缩方法和装置。 提供了一种用于基于多层结构对视频进行编码的方法,包括使用当前帧内相邻帧内的图像对当前块内进行帧内预测,​​以获得预测残差,对 使用与当前帧内对应的下层区域的图像的当前帧内块来获得预测残差,选择提供更高编码效率的两个预测残差中的一个,并对所选择的预测残差进行编码。

    Video decoding method using smoothing filter and video decoder therefor
    88.
    发明申请
    Video decoding method using smoothing filter and video decoder therefor 审中-公开
    使用平滑滤波器和视频解码器的视频解码方法

    公开(公告)号:US20060013311A1

    公开(公告)日:2006-01-19

    申请号:US11153410

    申请日:2005-06-16

    申请人: Woo-jin Han

    发明人: Woo-jin Han

    IPC分类号: H04N11/04

    摘要: A method and apparatus for increasing output picture quality at a decoding terminal by using a smoothing filter are provided. The video decoding method includes generating a residual frame from an input bitstream, performing wavelet-based upsampling on the residual frame, performing non-wavelet-based downsampling on the upsampled frame, and performing inverse temporal filtering on the downsampled frame.

    摘要翻译: 提供了一种通过使用平滑滤波器来增加解码终端的输出图像质量的方法和装置。 视频解码方法包括从输入比特流生成残差帧,对残差帧执行基于小波的上采样,对上采样帧执行基于小波的下采样,对下采样帧执行逆时间滤波。

    Video encoding and decoding methods and video encoder and decoder
    89.
    发明申请
    Video encoding and decoding methods and video encoder and decoder 审中-公开
    视频编解码方式及视频编解码器

    公开(公告)号:US20060008006A1

    公开(公告)日:2006-01-12

    申请号:US11174633

    申请日:2005-07-06

    摘要: Video coding and decoding methods and video encoder and decoder are provided. The video encoding method includes determining one of inter predictive coding and intra predictive coding mode as a coding mode for each block in an input video frame, generating a predicted frame for the input video frame based on predicted blocks obtained according to the determined coding mode, and encoding the input video frame based on the predicted frame. When the intra predictive coding mode is determined as the coding mode, an intra basis block composed of representative values of a block is generated for a block and the intra basis block is interpolated to generate an intra predicted block for the block.

    摘要翻译: 提供视频编码和解码方法以及视频编码器和解码器。 视频编码方法包括:将帧间预测编码和帧内预测编码模式之一确定为输入视频帧中的每个块的编码模式,基于根据所确定的编码模式获得的预测块生成用于输入视频帧的预测帧, 以及基于预测帧对输入视频帧进行编码。 当将帧内预测编码模式确定为编码模式时,为块生成由块的代表值组成的帧内基本块,并且内部基本块被内插以生成块的帧内预测块。

    Video coding/decoding method and apparatus
    90.
    发明申请
    Video coding/decoding method and apparatus 审中-公开
    视频编码/解码方法和装置

    公开(公告)号:US20050157793A1

    公开(公告)日:2005-07-21

    申请号:US11034734

    申请日:2005-01-14

    申请人: Ho-jin Ha Woo-jin Han

    发明人: Ho-jin Ha Woo-jin Han

    IPC分类号: H04N7/24 H04N7/12 H04N7/26

    摘要: A video encoder/decoder and method. The video coding method includes estimating a virtual frame, electing a reference frame from candidate frames including the virtual frame to remove temporal redundancy using the elected reference frame, coding a motion vector and predetermined information obtained in removing the temporal redundancy, and obtaining transform coefficients from the frames free from the temporal redundancy and quantizing the obtained transform coefficients to generate a bit-stream. The video decoding method includes receiving a bit-stream and parsing the received bit-stream to extract information on coded frames, inversely quantizing the information on the coded frames to obtain the transform coefficients, and performing inverse spatial transform of the obtained transform coefficients and inverse temporal transform by use of a reference frame including a virtual frame in inverse order to an order in which redundancy of the coded frames is removed and restoring the coded frames. As a result, it is possible to code the video at a higher compression rate.

    摘要翻译: 视频编码器/解码器和方法。 视频编码方法包括估计虚拟帧,从包括虚拟帧的候选帧中选择参考帧,以使用所选择的参考帧去除时间冗余,对运动矢量进行编码以及在消除时间冗余时获得的预定信息,以及从 帧没有时间冗余并量化所获得的变换系数以产生比特流。 视频解码方法包括接收比特流并解析接收到的比特流以提取关于编码帧的信息,对编码帧的信息进行逆量化以获得变换系数,并对所获得的变换系数进行逆空间变换 通过使用包括虚拟帧的参考帧以与去除编码帧的冗余的顺序相反的顺序进行时间变换并恢复编码帧。 结果,可以以更高的压缩率对视频进行编码。