SYSTEM AND METHOD FOR THE DYNAMIC RESOLUTION CHANGE FOR VIDEO ENCODING
    91.
    发明申请
    SYSTEM AND METHOD FOR THE DYNAMIC RESOLUTION CHANGE FOR VIDEO ENCODING 审中-公开
    用于视频编码的动态分辨率变化的系统和方法

    公开(公告)号:WO2005076631A1

    公开(公告)日:2005-08-18

    申请号:PCT/US2004/036377

    申请日:2004-11-02

    Abstract: The present invention relates to a method, system and computer program product for the predictive encoding of digital video sequences. The objectives of the invention are accomplished by dynamically determining the resolution of a current frame being encoded and outputting the determination. The determination process is based on statistical and coding information of a plurality of frames, including at least one previous frame and the current frame. Further, general encoding parameters and the encoding parameters of a current frame at a chosen resolution are determined, wherein the encoding parameter selection step takes into account the determination of the dynamic resolution determination step in determining the encoding parameters.

    Abstract translation: 本发明涉及用于数字视频序列的预测编码的方法,系统和计算机程序产品。 本发明的目的通过动态地确定正被编码的当前帧的分辨率并输出该确定来实现。 确定处理基于包括至少一个先前帧和当前帧的多个帧的统计和编码信息。 此外,确定所选分辨率下的当前帧的一般编码参数和编码参数,其中编码参数选择步骤在确定编码参数时考虑动态分辨率确定步骤的确定。

    復号化装置、符号化装置、補間フレーム生成システム、集積回路装置、復号化プログラムおよび符号化プログラム
    92.
    发明申请
    復号化装置、符号化装置、補間フレーム生成システム、集積回路装置、復号化プログラムおよび符号化プログラム 审中-公开
    解码器,编码器,插值帧生成系统,集成电路设备,解码程序和编码程序

    公开(公告)号:WO2005076630A1

    公开(公告)日:2005-08-18

    申请号:PCT/JP2005/000250

    申请日:2005-01-12

    Abstract:  本発明では、符号化効率を向上させつつ高精度の補間フレームの生成を行うための復号化装置、符号化装置、補間フレーム生成システム、集積回路装置、復号化プログラムおよび符号化プログラムを提供することを課題とする。復号化装置12は、復号化部70と、動きベクトル検出部79と、補間フレーム生成部80とを備えている。復号化部70は、画像信号d210を構成する画像フレームと、画像フレーム間の動きベクトルである動きベクトルMV48に基づいて画像フレームを補間する補間フレームを生成するための付加情報d231とが符号化された符号化画像信号d211を復号化する。動きベクトル検出部79は、復号化された画像フレームd260間の動きベクトルである動きベクトルMV90を検出する。補間フレーム生成部80は、動きベクトルMV90と復号化された画像フレームd259と復号化された付加情報d252とに基づいて補間フレームを生成する。

    Abstract translation: 解码器,编码器,内插帧生成系统,集成电路装置,解码程序和编码程序,用于以提高的编码效率产生高精度的内插帧。 解码器(12)包括解码部分(70),运动矢量检测部分(79)和内插帧产生部分(80)。 解码部(70)对构成图像信号(d210)的图像帧进行编码而生成的编码图像信号(d211)和用于根据运动矢量生成要插值的插值帧的附加信息(d231) MV48),它是图像帧之间的运动矢量。 运动矢量检测部(79)检测作为解码图像帧(d260)之间的运动矢量的运动矢量(MV90)。 内插帧生成部(80)从运动矢量(MV90),解码图像帧(d259)和解码附加信息(d252)生成内插帧。

    METHOD AND APPARATUS FOR PROCESSING A BITSTREAM IN A DIGITAL VIDEO TRANSCODER
    93.
    发明申请
    METHOD AND APPARATUS FOR PROCESSING A BITSTREAM IN A DIGITAL VIDEO TRANSCODER 审中-公开
    在数字视频转码器中处理一个BITSTREAM的方法和装置

    公开(公告)号:WO2005071959A1

    公开(公告)日:2005-08-04

    申请号:PCT/US2005/000595

    申请日:2005-01-10

    Abstract: [0052] A method and apparatus for processing a bitstream in a digital video transcoder is described. In one example, an adjustment factor is determined (408) that relates a number of bits representing a selected frame defined by the bitstream to a target number of bits for the selected frame. An average spatial activity value among sets of video data is associated (410) with the selected frame. A spatial activity value for a selected set of the sets of video data is determined (414). A normalized spatial activity value for the selected set of frequency video data is then computed (416) in response to the average spatial activity value, the spatial activity value, and a function of the adjustment factor. Target bit reduction for each of the sets of video data may be computed using a function of the normalized spatial activity value and the adjustment factor.

    Abstract translation: 描述了一种用于处理数字视频代码转换器中的位流的方法和装置。 在一个示例中,确定调整因子(408),其将表示由比特流定义的所选帧的位的数量与所选择的帧的目标位数相关联。 视频数据组中的平均空间活动值与所选择的帧相关联(410)。 确定所选择的视频数据组集合的空间活动值(414)。 然后响应于平均空间活动值,空间活动值和调整因子的函数来计算(416)所选择的频率视频数据集合的归一化空间活动值。 可以使用归一化空间活动值和调整因子的函数来计算每组视频数据的目标比特缩减。

    METHOD AND APPARATUS FOR SCALABLE VIDEO ENCODING AND DECODING
    94.
    发明申请
    METHOD AND APPARATUS FOR SCALABLE VIDEO ENCODING AND DECODING 审中-公开
    用于可扩展视频编码和解码的方法和装置

    公开(公告)号:WO2005055608A1

    公开(公告)日:2005-06-16

    申请号:PCT/KR2004/002989

    申请日:2004-11-18

    Inventor: HAN, Woo-jin

    Abstract: Disclosed is a scalable video coding algorithm. A method for video coding includes temporally filtering frames in the same sequence to a decoding sequence thereof to remove temporal redundancy, obtaining and quantizing transformation coefficients from frames whose temporal redundancy is removed, and generating bitstreams. A video encoder comprises a temporal transformation unit, a spatial transformation unit, a quantization unit and a bitstream generation unit to perform the method. A method for video decoding is basically reverse in sequence to the video coding. A video decoder extracts information necessary for video decoding by interpreting the received bitstream and decoding it. Thus, video streams may be generated by allowing a decoder to decode the generated bitstreams, while maintaining the temporal scalability on an encoder-side.

    Abstract translation: 公开了一种可扩展的视频编码算法。 一种用于视频编码的方法包括以与其解码序列相同的顺序对帧进行时间滤波,以去除时间冗余,从其时间冗余被去除的帧获得和量化变换系数,并生成比特流。 视频编码器包括时间变换单元,空间变换单元,量化单元和比特流生成单元,以执行该方法。 视频解码的方法基本上与视频编码相反。 视频解码器通过解释所接收的比特流并解码来提取视频解码所需的信息。 因此,可以通过允许解码器解码生成的比特流,同时保持编码器侧的时间可扩展性来生成视频流。

    DETECTION OF LOCAL VISUAL SPACE-TIME DETAILS IN A VIDEO SIGNAL
    95.
    发明申请
    DETECTION OF LOCAL VISUAL SPACE-TIME DETAILS IN A VIDEO SIGNAL 审中-公开
    在视频信号中检测局部视觉空间时间细节

    公开(公告)号:WO2005050564A2

    公开(公告)日:2005-06-02

    申请号:PCT/IB2004/003677

    申请日:2004-11-04

    Abstract: The invention relates to video signal processing such as for TV or DVD signals. Methods and systems for detection and segmentation of local visual space-time details in video signals are described. Furthermore, a video signal encoder is described. The method described comprises the steps of dividing an image into blocks of pixels, calculating space-time feature(s) within each block, calculating statistical parameter(s) for each space-time feature(s), and detecting blocks wherein the statistical parameter(s) exceeds a predetermined level. Preferably, visual normal flow is used as a local space-time feature. In addition, visual normal acceleration may be used as space-time features. In preferred embodiments visual artefacts, such as blockiness, occurring by MPEG or H.26x encoding can be reduced by allocating a larger amount of bits to local image parts exhibiting a large amount of space-time details.

    Abstract translation: 本发明涉及诸如用于TV或DVD信号的视频信号处理。 描述了用于视频信号中局部视觉空间 - 时间细节的检测和分割的方法和系统。 此外,描述了视频信号编码器。 所描述的方法包括以下步骤:将图像划分为多个像素块,计算每个块内的时空特征,计算每个时空特征的统计参数,以及检测块,其中统计参数 (s)超过预定水平。 优选地,视觉正常流被用作本地时空特征。 此外,视觉正常加速度可以用作时空特征。 在优选实施例中,可以通过将更大量的比特分配给呈现大量时空细节的本地图像部分来减少通过MPEG或H.26x编码发生的视觉伪影,如块效应。

    METHOD AND APPARATUS FOR WEIGHTED PREDICTION ESTIMATION USING A DISPLACED FRAME DIFFERENTIAL
    97.
    发明申请
    METHOD AND APPARATUS FOR WEIGHTED PREDICTION ESTIMATION USING A DISPLACED FRAME DIFFERENTIAL 审中-公开
    用于使用移位帧差分进行加权预测的方法和装置

    公开(公告)号:WO2005004492A2

    公开(公告)日:2005-01-13

    申请号:PCT/US2004020028

    申请日:2004-06-23

    Abstract: A video encoder (200, 300) and corresponding methods (600, 700) are provided for weighted prediction estimation using a displaced frame difference or differential, the encoder embodying a method (700) for receiving (712) a substantially uncompressed image block, assigning (714) a weighting factor for the image block corresponding to a particular reference picture having a corresponding index, computing (716) motion vectors corresponding to the difference between the image block and the particular reference picture, motion compensating (718) the particular reference picture in correspondence with the motion vectors, multiplying (720) the motion compensated reference picture by the assigned weighting factor to form a weighted motion compensated reference picture, subtracting (722) the weighted motion compensated reference picture from the substantially uncompressed image block, and encoding (724) a signal indicative of the difference between the substantially uncompressed image block and the weighted motion compensated reference picture along with the corresponding index of the particular reference picture.

    Abstract translation: 提供了使用移位的帧差或差分进行加权预测估计的视频编码器(200,300)和相应的方法(600,700),该编码器体现了用于接收(712)基本上未压缩的图像块的方法(700) (714)与具有相应索引的特定参考图片对应的图像块的加权因子,计算(716)与图像块和特定参考图片之间的差异对应的运动矢量,运动补偿(718)特定参考图片 与运动矢量相对应地将运动补偿参考图像乘以(720)分配的加权因子以形成加权运动补偿参考图像,从实质上未压缩图像块中减去(722)加权运动补偿参考图像,并且编码 724)表示基本上未压缩的图像块与图像块之间的差异的信号 加权运动补偿参考图片以及特定参考图片的对应索引。

    ERROR MASKING METHOD USING MOVING PICTURE ELECTRONIC WATERMARK OF VIDEO
    98.
    发明申请
    ERROR MASKING METHOD USING MOVING PICTURE ELECTRONIC WATERMARK OF VIDEO 审中-公开
    使用移动图像电子水印的错误掩蔽方法

    公开(公告)号:WO03073772A9

    公开(公告)日:2005-01-06

    申请号:PCT/JP0207542

    申请日:2002-07-25

    Inventor: TANAKA MASAFUMI

    Abstract: An error masking method using a moving picture electronic watermark. The method can reduce the operation quantity required for estimating motion vectors and acquire correct motion vectors even in case of high error ratio. The method has the conventional accuracy as the lowest accuracy and the upper layer compatibility with a general-purpose decoder. The digital moving picture signal is area-divided into a plurality of blocks or macro-blocks comprising N x N pixels, and each block or macro-block is subjected to motion-compensation. When obtaining the differential signal from one of the image in the future and in the past, and when obtaining no differential signal, each block or macro-block is transformed through the discrete cosine transform to obtain the discrete cosine transform output. The discrete cosine transform output is quantized to obtain the quantized output. The quantized output is subjected to the variable length encoding to obtain the bit stream. On the other hand, the motion vector is embedded in each block or macro-block as the electronic watermark information, so that the electronic watermark information is used for masking errors during decoding.

    Abstract translation: 使用运动图像电子水印的误差屏蔽方法。 该方法即使在高错误率的情况下也可以减少估计运动矢量所需的操作量并获得正确的运动矢量。 该方法具有作为最低精度的传统精度和与通用解码器的上层兼容性。 数字运动图像信号被区域划分为包括N×N个像素的多个块或宏块,并且对每个块或宏块进行运动补偿。 当从未来和过去的图像之一获得差分信号时,并且当不获得差分信号时,通过离散余弦变换来转换每个块或宏块以获得离散余弦变换输出。 离散余弦变换输出被量化以获得量化输出。 对量化输出进行可变长度编码以获得比特流。 另一方面,将运动矢量嵌入在每个块或宏块中作为电子水印信息,使得电子水印信息用于解码期间的掩蔽误差。

    SIGNAL PROCESSING SYSTEM
    99.
    发明申请
    SIGNAL PROCESSING SYSTEM 审中-公开
    信号处理系统

    公开(公告)号:WO2004047423A3

    公开(公告)日:2004-08-19

    申请号:PCT/US0336351

    申请日:2003-11-13

    Abstract: Methods and systems are disclosed for a video system. In a first exemplary embodiment, a video system (100) comprises a video processing circuit (105) that receives a picture and provides video compression by using an optimal macroblock mode of operation, the optimal macroblock mode of operation being identified by processing at least one macroblock of the picture, the processing being performed independent of other macroblocks contained in the picture. Additionally, the video processing circuit comprises a mode selection circuit (215) that identifies the optimal macroblock mode of operation by using a rate-distortion model. The rate-distortion model incorporates an overall macroblock mode distortion D that is defined as the sum of D>AC DC

    Abstract translation: 公开了用于视频系统的方法和系统。 在第一示例性实施例中,视频系统(100)包括视频处理电路(105),其接收图像并通过使用最佳宏块操作模式提供视频压缩,最佳宏块操作模式通过处理至少一个 图像的宏块,处理是独立于包含在图像中的其他宏块执行的。 此外,视频处理电路包括通过使用速率 - 失真模型来识别最佳宏块操作模式的模式选择电路(215)。 速率 - 失真模型包含总体宏块模式失真D,其被定义为由于AC系数导致的D> AC DC <由于DC系数导致的失真。

    SEQUENTIAL DIGITAL IMAGE COMPRESSION
    100.
    发明申请
    SEQUENTIAL DIGITAL IMAGE COMPRESSION 审中-公开
    顺序数字图像压缩

    公开(公告)号:WO2004034709A1

    公开(公告)日:2004-04-22

    申请号:PCT/IB2003/004168

    申请日:2003-09-22

    Abstract: A method for compressing a sequence of digital images includes: comparing a reference image of the sequence of digital images to a subsequent image of the sequence of digital images. In response to the reference and subsequent images being the same within a predetermined threshold, 1) a count of a number of images discarded is incremented, 2) the subsequent image is discarded, and 3) the comparing step is repeated with a next subsequent image. In response to the reference and subsequent images not being within the predetermined threshold, 1) the count is initialized and 2) the comparing step is repeated using the subsequent image as the reference image. Rather than comparing whole images corresponding portions of the images can be compared and compressed independently.

    Abstract translation: 用于压缩数字图像序列的方法包括:将数字图像序列的参考图像与数字图像序列的后续图像进行比较。 响应于参考和后续图像在预定阈值内相同,1)丢弃的图像数量的计数增加,2)丢弃随后的图像,以及3)比较步骤与下一个后续图像重复 。 响应于参考和后续图像不在预定阈值内,1)初始化计数,并且2)使用后续图像作为参考图像重复比较步骤。 而不是比较整个图像,可以独立地比较和压缩对应的图像部分。

Patent Agency Ranking