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    ADAPTIVE VARIABLE LENGTH CODES FOR INDEPENDENT VARIABLES
    91.
    发明申请
    ADAPTIVE VARIABLE LENGTH CODES FOR INDEPENDENT VARIABLES 审中-公开
    适用于独立变量的可变长度代码

    公开(公告)号：WO2007039795A1

    公开(公告)日：2007-04-12

    申请号：PCT/IB2006/002354

    申请日：2006-08-29

    Applicant: NOKIA CORPORATION ,  RIDGE, Justin ,  KARCZEWICZ, Marta ,  BAO, Yiliang ,  WANG, Xianglin

    Inventor： RIDGE, Justin ,  KARCZEWICZ, Marta ,  BAO, Yiliang ,  WANG, Xianglin

    IPC: H04N7/26

    CPC classification number: H04N19/33 ,  H04N19/102 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/184 ,  H04N19/187 ,  H04N19/44 ,  H04N19/61

    Abstract: A method for coding spatial and quality enhancement information in scalable video coding using variable length codes. Conventional systems have been capable of using variable length codes only with nonscalable video coding, In the present invention, the coded block pattern for each block of information, significance passes, and refinement passes can all be coded with different types of variable length codes. The present invention also provides for a variable length encoder/decoder that dynamically adapts to the actual symbol probability. The encoder/decoder of the present invention counts the number of times each symbol is coded. Based upon these counts, the encoder/decoder selects how many symbols to group when forming a code word- The encoder also uses these counts to select the specific codeword that should be used.

    Abstract translation: 一种使用可变长度码对可缩放视频编码中的空间和质量增强信息进行编码的方法。 传统的系统只能使用不可缩放的视频编码来使用可变长度代码。在本发明中，每个信息块，重要性传递和细化遍的编码块模式都可以用不同类型的可变长度代码进行编码。 本发明还提供了一种动态适应实际符号概率的可变长度编码器/解码器。 本发明的编码器/解码器对每个符号进行编码的次数进行计数。 基于这些计数，编码器/解码器在形成码字时选择要分组的符号数量。编码器还使用这些计数来选择应使用的特定码字。

    OPTIMAL RATE ALLOCATION FOR A GROUP OF CHANNELS
    93.
    发明申请
    OPTIMAL RATE ALLOCATION FOR A GROUP OF CHANNELS 审中-公开
    一组通道的最优费率分配

    公开(公告)号：WO2006047727A2

    公开(公告)日：2006-05-04

    申请号：PCT/US2005038882

    申请日：2005-10-27

    Applicant: EG TECHNOLOGY INC ,  MONACO JOSEPH WILSON

    Inventor： MONACO JOSEPH WILSON

    IPC: H04B1/66

    CPC classification number: H04N19/00 ,  H04N19/115 ,  H04N19/132 ,  H04N19/137 ,  H04N19/14 ,  H04N19/147 ,  H04N19/149 ,  H04N19/177 ,  H04N19/184 ,  H04N19/37 ,  H04N19/70 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/2402 ,  H04N21/4347 ,  H04N21/8456

    Abstract: The present invention relates generally to systems, methods, and computer program products for optimally allocating a fixed number of bits among a plurality of multi-media data channels. The optimal number of bits is determined by preprocessing each channel to calculate complexity data, and then the complexity data is used to determine the optimal number of bits to assign to each channel. The optimal number of bits may be determined by a closed loop controller in communication with one or more channel encoders, and the multimedia channels may contain video data conforming to the MPEG2 video format.

    Abstract translation: 本发明一般涉及用于在多个多媒体数据信道中最佳地分配固定数量的比特的系统，方法和计算机程序产品。 通过预处理每个信道以计算复杂度数据来确定最佳比特数，然后使用复杂度数据来确定分配给每个信道的最佳比特数。 最佳比特数可以由与一个或多个信道编码器通信的闭环控制器确定，并且多媒体信道可以包含符合MPEG2视频格式的视频数据。

    METHOD AND SYSTEM FOR ENTROPY ENCODING AND DECODING OF A SCALABLE VIDEO BIT STREAM
    94.
    发明申请
    METHOD AND SYSTEM FOR ENTROPY ENCODING AND DECODING OF A SCALABLE VIDEO BIT STREAM 审中-公开
    用于篡改编码和解码可扩展视频流的方法和系统

    公开(公告)号：WO2006008605A1

    公开(公告)日：2006-01-26

    申请号：PCT/IB2005/001941

    申请日：2005-07-08

    Applicant: NOKIA CORPORATION ,  BAO, Yiliang ,  KARCZEWICZ, Marta ,  RIDGE, Justin

    Inventor： BAO, Yiliang ,  KARCZEWICZ, Marta ,  RIDGE, Justin

    IPC: H04N7/26

    CPC classification number: H04N19/184 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/196 ,  H04N19/30 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

    Abstract: A method, program product and apparatus for decoding from a scalable bit stream the binarization results of a video sequence by selectively decoding syntax elements and avoidin redundancy in coding. The result is a decrease in the size of the compressed bit stream of an enhancement layer bit stream. One method includes determining whether a skipping flag in the base layer macro block of the video data is set, and decoding a skipping flag from an enhancement layer macro block of the video data, corresponding to the base layer macro block, only if the base layer macro block skipping flag is set. Another method includes determining which of a plurality of blocks in a base layer macro block contain zero coefficients, decoding an abbreviated coded block pattern (CBP) of an enhancement layer macro block, where the CBP includes a number of digits equal to the number of blocks in said base layer macro block containing only zero coefficients, and then generating a complete CBP for the enhancement layer based on the results of said decoding. Yet another method includes decoding a CBP value of a base layer macro block and differentially decoding a CBP value for an enhancement layer macro block relative to the CBP of the base layer macro block. An additional method includes determining the zero-value coefficients in a block of a base layer, decoding a coded block flag for a corresponding block in an enhancement layer, acid determining, based on the value of said encoded block flag, whether any of the zero-coefficients become non-zero coefficients in said enhancement block.

    Abstract translation: 一种用于通过选择性地解码语法元素并避免编码中的冗余，从可缩放比特流解码视频序列的二值化结果的方法，程序产品和装置。 结果是增强层比特流的压缩比特流的大小减小。 一种方法包括：确定视频数据的基本层宏块中的跳过标志是否被设置，并且对应于基本层宏块的视频数据的增强层宏块解码跳跃标志，只有当基本层 设置宏块跳过标志。 另一种方法包括确定基层宏块中的多个块中的哪个块包含零系数，解码增强层宏块的缩写编码块模式（CBP），其中CBP包括等于块数的数位数 在仅包含零系数的所述基本层宏块中，然后基于所述解码的结果为增强层生成完整的CBP。 另一种方法包括解码基本层宏块的CBP值，并相对于基本层宏块的CBP对增强层宏块的CBP值进行​​差分解码。 一种附加方法包括确定基本层的块中的零值系数，对增强层中相应块的编码块标志进行解码，基于所述编码块标志的值来确定酸值，否则是零 - 系数在所述增强块中变为非零系数。

    ENCODING, DECODING AND REPRESENTING HIGH DYNAMIC RANGE IMAGES
    95.
    发明申请
    ENCODING, DECODING AND REPRESENTING HIGH DYNAMIC RANGE IMAGES 审中-公开
    编码，解码和表示高动态范围图像

    公开(公告)号：WO2005104035A1

    公开(公告)日：2005-11-03

    申请号：PCT/CA2004/002199

    申请日：2004-12-24

    Applicant: SUNNYBROOK TECHNOLOGIES INC. ,  WARD, Gregory, J. ,  SIMMONS, Maryann

    Inventor： WARD, Gregory, J. ,  SIMMONS, Maryann

    IPC: G06T9/00

    CPC classification number: H04N19/98 ,  G06T5/007 ,  G06T5/009 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20208 ,  G09G5/10 ,  H04N1/3871 ,  H04N19/126 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/463

    Abstract: A data structure defining a high dynamic range image comprises a tone map having a reduced dynamic range and HDR information. The high dynamic range image can be reconstructed from the tone map and the HDR information. The data structure can be backwards compatible with legacy hardware or software viewers. The data structure may comprise a JFIF file having the tone map encoded as a JPEG image with the HDR information in an application extension or comment field of the JFIF file, or a MPEG file having the tone map encoded as a MPEG image with the HDR information in a video or audio channel of the MPEG file. Apparatus and methods for encoding or decoding the data structure may apply pre- or post correction to compensate for lossy encoding of the high dynamic range information.

    Abstract translation: 定义高动态范围图像的数据结构包括具有减小的动态范围和HDR信息的色调映射。 可以从色调图和HDR信息重建高动态范围图像。 数据结构可以与传统硬件或软件查看器向后兼容。 数据结构可以包括具有编码为JPEG图像的色调映射的JFIF文件，其中HDR信息在JFIF文件的应用程序扩展或注释字段中，或具有编码为具有HDR信息的MPEG图像的色调映射的MPEG文件 在MPEG文件的视频或音频通道中。 用于对数据结构进行编码或解码的装置和方法可以在校正前或之后应用以补偿高动态范围信息的有损编码。

    METHOD FOR ENCODING A DIGITAL SIGNAL INTO A SCALABLE BITSTREAM; METHOD FOR DECODING A SCALABLE BITSTREAM.
    97.
    发明申请
    METHOD FOR ENCODING A DIGITAL SIGNAL INTO A SCALABLE BITSTREAM; METHOD FOR DECODING A SCALABLE BITSTREAM. 审中-公开
    将数字信号编码到可扩展的字典中的方法; 解码可扩展字典的方法。

    公开(公告)号：WO2005036528A1

    公开(公告)日：2005-04-21

    申请号：PCT/SG2004/000323

    申请日：2004-10-06

    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH ,  YU, Rongshan ,  LIN, Xiao ,  RAHARDJA, Susanto

    Inventor： YU, Rongshan ,  LIN, Xiao ,  RAHARDJA, Susanto

    IPC: G10L19/00

    CPC classification number: G10L19/24 ,  H04N19/126 ,  H04N19/184 ,  H04N19/187 ,  H04N19/34 ,  H04N19/647

    Abstract: A method for encoding a digital signal into a scalable bitstream comprising quantizing the digital signal, and encoding the quantized signal to form a core-layer bitstream, performing an error mapping based on the digital signal and the core-layer bitstream to remove information that has been encoded into the core-layer bitstream, resulting in an error signal, bit-plane coding the error signal based on perceptual information of the digital signal, resulting in an enhancement-layer bitstream, wherein the perceptual information of the digital signal is determined using a perceptual model, and multiplexing the core-layer bitstream and the enhancement-layer bitstream, thereby generating the scalable bitstream. A method for decoding a scalable bitstream into a digital signal comprising de-multiplexing the scalable bitstream into a core-layer bitstream and an enhancement-layer bitstream, decoding and de-quantizing the core-layer bitstream to generate a core-layer signal, bit-plane decoding the enhancement-layer bitstream based on perceptual information of the digital signal, and performing an error mapping based on the bit-plane decoded enhancement-layer bitstream and the de-quantized core-layer signal, resulting in an reconstructed transformed signal, wherein the reconstructed transformed signal is the digital signal.

    Abstract translation: 一种用于将数字信号编码成可分级比特流的方法，包括量化数字信号，以及对量化信号进行编码以形成核心层比特流，基于数字信号和核心层比特流执行误差映射，以去除具有 被编码到核心层比特流中，导致误差信号，基于数字信号的感知信息对误差信号进行位平面编码，产生增强层比特流，其中数字信号的感知信息使用 感知模型，以及多路复用核心层比特流和增强层比特流，由此生成可分级比特流。 一种用于将可分级比特流解码为数字信号的方法，包括将可分级比特流解复用为核心层比特流和增强层比特流，解码和解量化核心层比特流以产生核心层信号 基于数字信号的感知信息对增强层比特流进行平面解码，并且基于比特平面解码的增强层比特流和去量化的核心层信号执行错误映射，导致重构的变换信号， 其中重建的变换信号是数字信号。

    MATCH MSB DIGITAL IMAGE COMPRESSION
    99.
    发明申请
    MATCH MSB DIGITAL IMAGE COMPRESSION 审中-公开
    MATCH MSB数字图像压缩

    公开(公告)号：WO2004061772A1

    公开(公告)日：2004-07-22

    申请号：PCT/US2003/036344

    申请日：2003-11-13

    Applicant: INTEL CORPORATION

    Inventor： DWYER, Michael ,  PIAZZA, Thomas

    IPC: G06T9/00

    CPC classification number: H04N19/184 ,  H04N19/124 ,  H04N19/156 ,  H04N19/186 ,  H04N19/50

    Abstract: Methods, apparatus and computer readable medium are described that compress and/or decompress a digital image in a lossless or a lossy manner. In some embodiments, a display controller may compress a digital image by generating a symbol for each pel of the digital image. In particular, the symbol may represent a pel via a match vector and a channel error vector. The match vector may indicate which quantized channels of the pel matched quantized channels of a previous pel. Further, the channel error vector may comprise a lossless or lossy channel for each quantized channel of the pel that did not match a corresponding quantized channel of the previous pel. The channel error may also comprise a lossless or lossy channel error for each quantized channel of the pel that matched a corresponding quantized channel of the previous pel.

    Abstract translation: 描述了以无损或有损的方式对数字图像进行压缩和/或解压缩的方法，装置和计算机可读介质。 在一些实施例中，显示控制器可以通过为数字图像的每个像素生成符号来压缩数字图像。 特别地，符号可以经由匹配向量和信道误差向量来表示像素。 匹配向量可以指示先前像素的像素匹配量化通道的哪个量化通道。 此外，信道误差向量可以包括与先前像素的对应量化信道不匹配的像素的每个量化信道的无损或有损信道。 信道误差还可以包括与先前像素的相应量化信道匹配的像素的每个量化信道的无损或有损信道误差。

    HIGH PRECISION ENCODING AND DECODING OF VIDEO IMAGES
    100.
    发明申请
    HIGH PRECISION ENCODING AND DECODING OF VIDEO IMAGES 审中-公开
    高精度编码和解码视频图像

    公开(公告)号：WO02071735A8

    公开(公告)日：2004-05-27

    申请号：PCT/US0206078

    申请日：2002-03-01

    Applicant: DOLBY LABORATORIES INC ,  DEMOS GARY A ,  RUHOFF DAVID

    Inventor： DEMOS GARY A ,  RUHOFF DAVID

    IPC: H04N11/04 ,  G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  H04N7/32 ,  H04N7/50 ,  H04N7/12

    CPC classification number: H04N19/124 ,  H04N19/0009 ,  H04N19/136 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/196 ,  H04N19/45 ,  H04N19/60 ,  H04N19/61 ,  H04N19/90

    Abstract: Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the "quantization parameter" or "QP" (502). The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range (506) to reduced constrast regions of an image to extend the precision with which the low contrast portions are compression coded.

    Abstract translation: 用于改进质量视频压缩的方法，系统和计算机程序。 可以通过在中间编码和解码处理步骤期间保留较高数量的比特来改进来自MPEG风格视频编码的图像质量。 逆离散余弦变换（IDCT）失配的问题可以通过解码器的IDCT函数数值算法与编码器解码部分所使用的IDCT函数数值算法来消除。 还包括通过扩展“量化参数”或“QP”（502）的范围来对宽动态范围图像进行高精度压缩的应用。 QP的扩展可以通过直接增加QP的范围或者通过非线性变换来间接地实现。 还包括扩展中间处理精度和扩展QP范围（506）的应用，以减少图像的对比区域，以扩展低对比度部分被压缩编码的精度。

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