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    Error resilient encoding method for inter-frames of compressed videos
    5.
    发明授权
    Error resilient encoding method for inter-frames of compressed videos 失效
    压缩视频帧间错误弹性编码方法

    公开(公告)号：US07324698B2

    公开(公告)日：2008-01-29

    申请号：US10717679

    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： G06K9/36

    CPC分类号： H04N19/513 ,  H04N19/895

    摘要： A method encodes an inter-frame of a compressed video, the inter-frame including multiple macroblocks in a predetermined order. Each macroblock has an associated motion vector. For each current macroblock in the predetermined order, a set of near macroblocks are identified. An index is assigned to each near macroblock. A difference between the motion vector of the current macroblock and the motion vector of each near macroblocks is determined. The indices of the near macroblocks are then sorted in order of the differences and appended to the inter-frame.

    摘要翻译： 方法对压缩视频的帧间进行编码，帧间以预定顺序包括多个宏块。 每个宏块具有相关的运动矢量。 对于按照预定顺序的每个当前宏块，识别一组近似的宏块。 索引被分配给每个近似的宏块。 确定当前宏块的运动矢量与每个近似宏块的运动矢量之间的差异。 然后按照差异的顺序对近宏块的索引进行排序并附加到帧间。

    Error concealing decoding method of intra-frames of compressed videos
    7.
    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
    8.
    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。

    Error concealing decoding method of intra-frames of compressed videos
    9.
    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
    10.
    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。