利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

87 条记录 (耗时 0.026 秒)

    Method for coding pictures using hierarchical transform units
    51.
    发明授权
    Method for coding pictures using hierarchical transform units 有权
    使用分层变换单元编码图像的方法

    公开(公告)号：US08494290B2

    公开(公告)日：2013-07-23

    申请号：US13169959

    申请日：2011-06-27

    申请人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

    发明人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： G06K9/36

    CPC分类号： G06T9/40 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

    摘要： A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree.

    摘要翻译： 比特流包括编码图像，以及用于生成变换树的分割标志。 比特流是将编码单元（CU）划分成预测单元（PU）。 转换树根据分裂标志生成。 变换树中的节点表示与CU相关联的变换单元（TU）。 仅当相应的分割标志被设置时，该代码才能分割每个TU。 对于包含多个TU的每个PU，将多个TU合并成一个较大的TU，根据分割和合并修改变换树。 然后，可以使用根据变换树与PU相关联的TU来解码包含在每个PU中的数据。

    Error concealing decoding method of intra-frames of compressed videos
    52.
    发明授权
    Error concealing decoding method of intra-frames of compressed videos 失效
    错误隐藏压缩视频帧内解码方法

    公开(公告)号：US07394855B2

    公开(公告)日：2008-07-01

    申请号：US10717826

    申请日：2003-11-20

    申请人： Hao-Song Kong ,  Wei-Ying Kung ,  Anthony Vetro ,  Huifang Sun

    发明人： Hao-Song Kong ,  Wei-Ying Kung ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： G06K9/40

    CPC分类号： H04N19/895 ,  H04N19/159

    摘要： A method conceals errors in an infra-frame of compressed video. The intra-frame is decoded to multiple macroblocks. Each macroblock including pixels arranged in a rectangular array. A lost macroblock is identified during the decoding. Pixels along an outer boundary of the lost macroblock are concealed from nearest candidate pixels along outer boundaries of macroblocks immediately adjacent to the lost macroblock. All other pixels in the lost macroblock are concealed from nearest candidate pixels selected from previously concealed pixels in the lost macroblock.

    摘要翻译： 一种方法隐藏了压缩视频的帧内错误。 帧内解码为多个宏块。 每个宏块包括以矩形阵列排列的像素。 在解码期间识别丢失的宏块。 沿着与丢失的宏块紧邻的宏块的外边界沿着离开的宏块的外边界的像素被隐藏起来。 丢失的宏块中的所有其他像素从丢失宏块中的先前隐藏的像素中选择的最近的候选像素中隐藏。

    Transcoding compressed videos to reducing resolution videos
    53.
    发明授权
    Transcoding compressed videos to reducing resolution videos 失效
    将压缩视频转码为缩小分辨率的视频

    公开(公告)号：US07142601B2

    公开(公告)日：2006-11-28

    申请号：US10413250

    申请日：2003-04-14

    申请人： Hao-Song Kong ,  Anthony Vetro ,  Huifang Sun

    发明人： Hao-Song Kong ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： H04B1/66 ,  H04N7/12

    CPC分类号： H04N19/59 ,  H04N19/126 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/40 ,  H04N19/60

    摘要： A method and system transcodes an input video to a lower spatial resolution. The input video is first decoded into pictures. Each picture includes a set of macroblocks. Each picture sub-sampled to a downscaled picture having a lower spatial resolution. A quantization scale is selected for each macroblock in the downscaled picture. A set of motion vectors is generated for each macroblock in the downscaled picture. A multiplier value based on the quantization scale is determined for each macroblock in the downscaled picture. One of a plurality of encoding modes is selected for each macroblock in the downscaled picture according to the quantization scale, the motion vectors, and the multiplier value. Then, each macroblock in each downscaled picture is encoded according to the quantization scale, the selected encoding mode, and the set of motion vectors to produce an output video having a lower spatial resolution that the input video.

    摘要翻译： 方法和系统将输入视频转码为较低的空间分辨率。 输入视频首先被解码为图片。 每个图片包括一组宏块。 每个图像被子采样到具有较低空间分辨率的缩小图像。 对于缩小图像中的每个宏块选择量化比例。 对于缩小图像中的每个宏块生成一组运动矢量。 对于缩小图像中的每个宏块确定基于量化比例的乘数值。 根据量化尺度，运动矢量和乘数值，对缩小图像中的每个宏块选择多个编码模式之一。 然后，根据量化尺度，所选择的编码模式和运动矢量集合对每个缩小图像中的每个宏块进行编码，以产生输入视频具有较低空间分辨率的输出视频。

    Adaptively processing a video based on content characteristics of frames in a video
    56.
    发明授权
    Adaptively processing a video based on content characteristics of frames in a video 失效
    基于视频中的帧的内容特征自适应地处理视频

    公开(公告)号：US07003154B1

    公开(公告)日：2006-02-21

    申请号：US09715639

    申请日：2000-11-17

    申请人： Kadir A. Peker ,  Ajay Divakaran ,  Huifang Sun

    发明人： Kadir A. Peker ,  Ajay Divakaran ,  Huifang Sun

    IPC分类号： G06K9/34 ,  H04N5/91 ,  G11B27/00

    CPC分类号： H04N19/587 ,  H04N19/132 ,  H04N19/136 ,  H04N19/17 ,  H04N19/172 ,  H04N19/186 ,  H04N19/61

    摘要： A system and method for temporally processing an input video including input frames. Each frame has an associated frame play time, and the input video has a total input video play time that is a sum of the input frame play times of all of the input frames. Each of the input frames is classified according to a content characteristic of each frames. An output frame play time is allocated to each of the input frames that is based on the classified content characteristic of each of the input frames to generate a plurality of output frames that form an output video.

    摘要翻译： 一种用于在时间上处理包括输入帧的输入视频的系统和方法。 每帧具有关联的帧播放时间，并且输入视频具有作为所有输入帧的输入帧播放时间之和的总输入视频播放时间。 每个输入帧根据每帧的内容特征进行分类。 输出帧播放时间被分配给基于每个输入帧的分类内容特征的每个输入帧，以产生形成输出视频的多个输出帧。

    Optimal bit allocation for error resilient video transcoding
    57.
    发明申请
    Optimal bit allocation for error resilient video transcoding 审中-公开
    用于错误弹性视频转码的最佳位分配

    公开(公告)号：US20050175109A1

    公开(公告)日：2005-08-11

    申请号：US10776571

    申请日：2004-02-11

    申请人： Anthony Vetro ,  Minghui Xia ,  Bede Liu ,  Huifang Sun

    发明人： Anthony Vetro ,  Minghui Xia ,  Bede Liu ,  Huifang Sun

    IPC分类号： H03M7/30 ,  H04N7/12 ,  H04N19/89 ,  H04N19/895

    CPC分类号： H04N19/68 ,  H04N19/107 ,  H04N19/126 ,  H04N19/147 ,  H04N19/172 ,  H04N19/19 ,  H04N19/40 ,  H04N19/61 ,  H04N19/89 ,  H04N19/895

    摘要： A method transcodes an input video to an output video, which can have a lower bit rate than the input video. Sets of rate values and corresponding sets of distortion values are determined for each components of the output video. There is one set of rate values and one corresponding set of distortion values for each component in the output video. The components include a requantization of the input video, inserted resynchronization markers, and inserted intra-blocks. Then, bits are allocated to each of the components in the output video according to the associated set of rate values and the associated corresponding set of distortion values.

    摘要翻译： 一种方法将输入视频转码为输出视频，其可以具有比输入视频更低的比特率。 为输出视频的每个组件确定速率值和相应的失真值集合。 输出视频中的每个组件有一组速率值和一组对应的失真值。 这些组件包括输入视频的重新排序，插入的重新同步标记和插入的块内块。 然后，根据相关联的一组速率值和相应的对应的失真值组，将比特分配给输出视频中的每个分量。

    Error concealing decoding method of intra-frames of compressed videos
    58.
    发明申请
    Error concealing decoding method of intra-frames of compressed videos 失效
    错误隐藏压缩视频帧内解码方法

    公开(公告)号：US20050111557A1

    公开(公告)日：2005-05-26

    申请号：US10717826

    申请日：2003-11-20

    申请人： Hao-Song Kong ,  Wei-Ying Kung ,  Anthony Vetro ,  Huifang Sun

    发明人： Hao-Song Kong ,  Wei-Ying Kung ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： H04N7/12 ,  H04N19/895

    CPC分类号： H04N19/895 ,  H04N19/159

    摘要： A method conceals errors in an intra-fame of compressed video. The intra-frame is decoded to multiple macroblocks. Each macroblock including pixels arranged in a rectangular array. A lost macroblock is identified during the decoding. Pixels along an outer boundary of the lost macroblock are concealed from nearest candidate pixels along outer boundaries of macroblocks immediately adjacent to the lost macroblock. All other pixels in the lost macroblock are concealed from nearest candidate pixels selected from previously concealed pixels in the lost macroblock.

    摘要翻译： 一种方法隐藏压缩视频内部的错误。 帧内解码为多个宏块。 每个宏块包括以矩形阵列排列的像素。 在解码期间识别丢失的宏块。 沿着与丢失的宏块紧邻的宏块的外边界沿着离开的宏块的外边界的像素被隐藏起来。 丢失的宏块中的所有其他像素从丢失宏块中的先前隐藏的像素中选择的最近的候选像素中隐藏。

    System and method for classifying and filtering pixels
    59.
    发明申请
    System and method for classifying and filtering pixels 审中-公开
    用于分类和过滤像素的系统和方法

    公开(公告)号：US20050100235A1

    公开(公告)日：2005-05-12

    申请号：US10703809

    申请日：2003-11-07

    申请人： Hao-Song Kong ,  Anthony Vetro ,  Huifang Sun

    发明人： Hao-Song Kong ,  Anthony Vetro ,  Huifang Sun

    IPC分类号： G06T5/20 ,  G06K9/00 ,  G06K9/36 ,  G06K9/40 ,  G06T5/00 ,  H04N1/41 ,  H04N5/21 ,  H04N7/24 ,  H04N19/00

    CPC分类号： H04N19/176 ,  G06T7/11 ,  G06T7/143 ,  G06T2207/20012 ,  G06T2207/20021 ,  H04N19/117 ,  H04N19/14 ,  H04N19/61 ,  H04N19/86

    摘要： A method classifies pixels in an image. The image can be a decompressed image that was compressed using a block-based compression process. A filter is applied to each pixel in the image to determine a mean intensity value of the pixel. The mean is used to determine a mean-square intensity for each pixel, which in turn is used to determine a variance of the intensity for each pixel. The mean-square represents an average power of a DC component in the image, and the variance represents an average power of AC frequency components in the image. The pixels are then classified according to the variance as being either smooth, edge, or texture pixels. Blocks in the image can then be classified according to the classified pixels, and blocking artifacts and ringing artifacts in the blocks can then be filtered according to the block classification.

    摘要翻译： 一种方法对图像中的像素进行分类。 图像可以是使用基于块的压缩过程压缩的解压缩图像。 将滤波器应用于图像中的每个像素以确定像素的平均强度值。 该平均值用于确定每个像素的均方强度，其依次用于确定每个像素的强度的方差。 均方根表示图像中的直流分量的平均功率，方差表示图像中的交流频率分量的平均功率。 然后将像素根据方差分类为平滑，边缘或纹理像素。 然后可以根据分类的像素对图像中的块进行分类，然后可以根据块分类来过滤块中的块伪影和振铃伪像。