Splicing of video data in progressively refreshed video streams
    1.
    发明授权
    Splicing of video data in progressively refreshed video streams 有权
    逐渐刷新的视频流中的视频数据的拼接

    公开(公告)号:US06434195B1

    公开(公告)日:2002-08-13

    申请号:US09196709

    申请日:1998-11-20

    IPC分类号: H04N712

    摘要: A method is provided for replacing compressed video from a first source with video from a second source at a predefined insertion point in a video data stream. If the video from the second source is progressively refreshed video, it is decompressed sufficiently prior to the insertion point to enable the recovery and recompression of a first video frame (in encoding order) from the second source to be inserted at the insertion point. The recovered first video frame is then recompressed as an intra-coded (I) frame. The insertion of the video from the second source is then commenced at the insertion point using the I frame. The insertion point can, for example, indicate the commencement of a commercial break in the video stream, in which case the second source provides a commercial for insertion into the commercial break. Where the commercial is stored in memory, it can be stored with the first frame thereof (in encoding order) as an I frame.

    摘要翻译: 提供了一种用于在视频数据流中的预定插入点处从来自第二源的视频替换来自第一源的压缩视频的方法。 如果来自第二源的视频是逐渐刷新的视频,则在插入点之前对其进行充分的解压缩,以便能够从插入点插入第二个源的第一个视频帧(以编码顺序)的恢复和重新压缩。 然后将恢复的第一视频帧作为帧内编码(I)帧重新压缩。 然后使用I帧在插入点处开始从第二源插入视频。 例如,插入点可以指示视频流中的商业中断的开始,在这种情况下,第二个源提供商业插入到商业中断。 在商业存储在存储器中的情况下,可以将其第一帧(以编码顺序)存储为I帧。

    Reference picture selection for sub-pixel motion estimation
    3.
    发明授权
    Reference picture selection for sub-pixel motion estimation 有权
    子像素运动估计的参考图片选择

    公开(公告)号:US08462849B2

    公开(公告)日:2013-06-11

    申请号:US12342223

    申请日:2008-12-23

    IPC分类号: H04N7/12

    摘要: A video coding system includes a prediction module configured to perform multi-reference picture sub-pixel motion estimation. Reference pictures are selected for the sub-pixel motion estimation based on full-pixel motion estimation. A cost function is used to select the reference pictures from one or more groups of reference pictures for a block in a macroblock. The cost is based on full-pixel motion estimation errors and a predicted motion vector for the block. The selected reference pictures are used for sub-pixel motion estimation to get the final motion vector for each block.

    摘要翻译: 视频编码系统包括被配置为执行多参考图像子像素运动估计的预测模块。 基于全像素运动估计选择参考图像用于子像素运动估计。 使用成本函数来从宏块中的块的一个或多个参考图片组中选择参考图片。 成本基于全像素运动估计误差和块的预测运动矢量。 选择的参考图像用于子像素运动估计,以获得每个块的最终运动矢量。

    Reference Picture Selection for Sub-Pixel Motion Estimation
    4.
    发明申请
    Reference Picture Selection for Sub-Pixel Motion Estimation 有权
    子像素运动估计的参考图像选择

    公开(公告)号:US20100158120A1

    公开(公告)日:2010-06-24

    申请号:US12342223

    申请日:2008-12-23

    IPC分类号: H04N11/02

    摘要: A video coding system includes a prediction module configured to perform multi-reference picture sub-pixel motion estimation. Reference pictures are selected for the sub-pixel motion estimation based on full-pixel motion estimation. A cost function is used to select the reference pictures from one or more groups of reference pictures for a block in a macroblock. The cost is based on full-pixel motion estimation errors and a predicted motion vector for the block. The selected reference pictures are used for sub-pixel motion estimation to get the final motion vector for each block.

    摘要翻译: 视频编码系统包括被配置为执行多参考图像子像素运动估计的预测模块。 基于全像素运动估计选择参考图像用于子像素运动估计。 使用成本函数来从宏块中的块的一个或多个参考图片组中选择参考图片。 成本基于全像素运动估计误差和块的预测运动矢量。 选择的参考图像用于子像素运动估计,以获得每个块的最终运动矢量。

    Multi-functional transcoder for compressed bit streams
    6.
    发明授权
    Multi-functional transcoder for compressed bit streams 有权
    用于压缩比特流的多功能代码转换器

    公开(公告)号:US06434197B1

    公开(公告)日:2002-08-13

    申请号:US09226796

    申请日:1999-01-07

    IPC分类号: H04N718

    摘要: A method and apparatus for transcoding digital video data, for example, at the headend of a cable or satellite television network. A generic multi-functional transcoder architecture has a “post-pre-processing engine” that provides a number of processing functions for implementing desired format conversions according to a user selection signal or an automatically generated selection signal. The processing functions can change frame size, frame rate, color space sampling format, interlaced or progressive scan format, resolution, and provide noise/deblocking filtering, for example. The system also allows the control of several transcoders to convert several bit streams with different formats into corresponding bit streams with a common format. Furthermore, the transcoder avoids the need for motion estimation.

    摘要翻译: 一种用于例如在有线或卫星电视网络的前端对数字视频数据进行代码转换的方法和装置。 通用多功能代码转换器架构具有“后预处理引擎”,其提供用于根据用户选择信号或自动生成的选择信号来实现所需格式转换的多个处理功能。 处理功能可以改变帧大小,帧速率,色彩空间采样格式,隔行或逐行扫描格式,分辨率,并提供噪声/去块滤波。 该系统还允许控制多个代码转换器,将具有不同格式的多个比特流以通用格式转换成相应的比特流。 此外,代码转换器避免了对运动估计的需要。

    Macroblock level adaptive frame/field coding for digital video content
    7.
    发明授权
    Macroblock level adaptive frame/field coding for digital video content 有权
    用于数字视频内容的宏块级自适应帧/场编码

    公开(公告)号:US07310377B2

    公开(公告)日:2007-12-18

    申请号:US11027656

    申请日:2004-12-30

    IPC分类号: H04B1/66

    摘要: A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each of the smaller blocks in each picture in said stream of pictures in either frame mode or in field mode.

    摘要翻译: 数字视频内容的编码和解码方法和系统。 数字视频内容包括可以是帧内,预测或双预测图像的图像流。 每个图像包括可以进一步分割成较小块的宏块。 该方法需要在帧模式或场模式下对所述图像流中的每个图像中的每个较小块进行编码和解码。