Adaptive interpolation filters for video coding
    51.
    发明申请
    Adaptive interpolation filters for video coding 有权
    用于视频编码的自适应插值滤波器

    公开(公告)号:US20080247467A1

    公开(公告)日:2008-10-09

    申请号:US12008254

    申请日:2008-01-08

    IPC分类号: H04N11/02

    摘要: In digital video image encoding and decoding, a filter type is selected based on symmetrical properties of the images and coefficient values of an interpolation filter are calculated based on the selected filter type. Coefficient values, filter tap-length and selected filter-type are provided in the encoded video data. Coefficient values are also calculated based on a prediction signal representative of the different between a video frame and a reference image. The prediction signal is calculated from the reference image based on a predefined base filter and motion estimation performed on the video frame. The predefined base filter has fixed coefficient values. Coefficient values are selected from interpolation of pixel values in a selected image segment in the video frame. Symmetry properties of images can be a vertical symmetry, a horizontal symmetry and a combination thereof, so that only a portion of the filter coefficients are coded.

    摘要翻译: 在数字视频图像编码和解码中,基于图像的对称属性选择滤波器类型,并且基于所选择的滤波器类型来计算内插滤波器的系数值。 在编码的视频数据中提供系数值,滤波器抽头长度和选定的滤波器类型。 也可以基于表示视频帧和参考图像之间的不同的预测信号来计算系数值。 基于对视频帧执行的预定义的基本滤波器和运动估计,从参考图像计算预测信号。 预定义的基本滤波器具有固定的系数值。 系数值从视频帧中所选图像段中的像素值的内插中选择。 图像的对称属性可以是垂直对称性,水平对称性及其组合,使得只有一部分滤波器系数被编码。

    SYSTEM AND METHOD FOR USING PARALLELLY DECODABLE SLICES FOR MULTI-VIEW VIDEO CODING
    52.
    发明申请
    SYSTEM AND METHOD FOR USING PARALLELLY DECODABLE SLICES FOR MULTI-VIEW VIDEO CODING 有权
    用于多视图视频编码的并行解码器的系统和方法

    公开(公告)号:US20080089412A1

    公开(公告)日:2008-04-17

    申请号:US11872650

    申请日:2007-10-15

    IPC分类号: H04N11/02

    摘要: A system and method for enabling parallel decoder implementation for different views, even when there are existing dependencies between views. In various embodiments of the present invention, information is signaled to a decoder that slices are coded using certain constraints, so that parallel decoding of slices is possible. This signaling can be performed at a sequence parameter set level, or it could be performed at picture parameter set level, slice header level or macroblock header level. Additionally, the delay between various views is also signaled to the decoder, at the same location as the constraint information in various embodiments. Various algorithms can also be used to improve the coding efficiency of the system.

    摘要翻译: 即使当视图之间存在依赖关系时,也可以为不同的视图实现并行解码器的系统和方法。 在本发明的各种实施例中,向解码器发信号通知使用特定约束对切片进行编码的信息,从而切片的并行解码是可能的。 该信令可以在序列参数设置级别执行,或者可以在图像参数设置级别,片头级别或宏块头级别执行。 此外,各种视图之间的延迟也在与各种实施例中的约束信息相同的位置处被通知给解码器。 也可以使用各种算法来提高系统的编码效率。