Layered Wyner-Ziv video coding for transmission over unreliable channels
    1.
    发明授权
    Layered Wyner-Ziv video coding for transmission over unreliable channels 有权
    分层Wyner-Ziv视频编码,用于传输不可靠的频道

    公开(公告)号:US08073052B1

    公开(公告)日:2011-12-06

    申请号:US11494678

    申请日:2006-07-27

    IPC分类号: H04N7/12

    摘要: A system and method for video coding. Energy-concentrating transform operations are performed on video data to obtain transformed data. Nested scalar quantization is performed on the transformed data to generate blocks of coset indices. Bit planes of the blocks of coset indices are encoded using irregular repeat accumulate (IRA) encoders to generate corresponding bit streams. The bit streams are transmitted to a destination device over a channel. A decoder of the destination device receives input data, corresponding to transmitted bit streams, from the channel. The input data is decoded, using side information, to obtain estimates for the blocks of coset indices. Output video data (i.e., an estimate of the original video data) is generated using the estimated blocks of coset indices and the side information.

    摘要翻译: 一种用于视频编码的系统和方法。 对视频数据执行能量集中变换操作以获得变换数据。 对变换后的数据执行嵌套标量量化,生成集合索引块。 使用不规则重复累积(IRA)编码器对陪集索引块的位平面进行编码,以生成相应的比特流。 比特流通过信道被发送到目的地设备。 目的地设备的解码器从信道接收对应于发送的比特流的输入数据。 使用边信息对输入数据进行解码,以获得对陪集索引块的估计。 使用估计的陪集索引块和侧面信息来生成输出视频数据(即,原始视频数据的估计)。

    Distributed joint source-channel coding of video using raptor codes
    2.
    发明申请
    Distributed joint source-channel coding of video using raptor codes 有权
    使用猛禽码分布式联合源视频编码

    公开(公告)号:US20080069242A1

    公开(公告)日:2008-03-20

    申请号:US11517942

    申请日:2006-09-08

    IPC分类号: H04N7/26

    摘要: A video encoder system includes a base layer and an enhancement layer for encoding video data. The base layer encodes a reduced quality version of the video data to obtain base layer data. The enhancement layer encodes the video data using energy-concentrating transform operations, nested scalar quantization, and Raptor encoders. The base layer data and enhancement layer data are transmitted through a channel to a video decoder system. The decoder system decodes the base layer data to recover an estimate of the reduced quality video and decodes the enhancement layer data (using the reduced quality video as side information) to obtain blocks of coset indices. The decoder system then operates on the blocks of coset indices to generate estimates of the original video data.

    摘要翻译: 视频编码器系统包括用于编码视频数据的基本层和增强层。 基层对视频数据的降低质量版本进行编码以获得基本层数据。 增强层使用能量集中变换操作,嵌套标量量化和猛禽编码器编码视频数据。 基层数据和增强层数据通过一个信道发送到视频解码器系统。 解码器系统对基本层数据进行解码以恢复降低质量视频的估计,并且将增强层数据(使用缩减质量视频作为辅助信息)解码以获得陪集索引块。 然后,解码器系统对陪集索引的块进行操作以产生原始视频数据的估计。

    Distributed joint source-channel coding of video using raptor codes
    3.
    发明授权
    Distributed joint source-channel coding of video using raptor codes 有权
    使用猛禽码分布式联合源视频编码

    公开(公告)号:US08315306B2

    公开(公告)日:2012-11-20

    申请号:US11517942

    申请日:2006-09-08

    IPC分类号: H04N7/12

    摘要: A video encoder system includes a base layer and an enhancement layer for encoding video data. The base layer encodes a reduced quality version of the video data to obtain base layer data. The enhancement layer encodes the video data using energy-concentrating transform operations, nested scalar quantization, and Raptor encoders. The base layer data and enhancement layer data are transmitted through a channel to a video decoder system. The decoder system decodes the base layer data to recover an estimate of the reduced quality video and decodes the enhancement layer data (using the reduced quality video as side information) to obtain blocks of coset indices. The decoder system then operates on the blocks of coset indices to generate estimates of the original video data.

    摘要翻译: 视频编码器系统包括用于编码视频数据的基本层和增强层。 基层对视频数据的降低质量版本进行编码以获得基本层数据。 增强层使用能量集中变换操作,嵌套标量量化和猛禽编码器编码视频数据。 基层数据和增强层数据通过一个信道发送到视频解码器系统。 解码器系统对基本层数据进行解码以恢复降低质量视频的估计,并且将增强层数据(使用缩减质量视频作为辅助信息)解码以获得陪集索引块。 然后,解码器系统对陪集索引的块进行操作以产生原始视频数据的估计。

    Coherent anti-Stokes Raman holography
    10.
    发明授权
    Coherent anti-Stokes Raman holography 有权
    相干反斯托克斯拉曼全息术

    公开(公告)号:US08675201B2

    公开(公告)日:2014-03-18

    申请号:US12793976

    申请日:2010-06-04

    IPC分类号: G01B9/021

    摘要: Apparatus and methods of four wave mixing (FWM) holography are described, including illuminating a sample with a first beam, a second beam, and a third beam, and combining the generated FWM signal with a reference beam at a imaging device to obtain holographic image data. In some examples, the first and second beams may be provided by a single pump-probe beam. The third beam may be a Stokes beam or an anti-Stokes beam. A representative example is coherent anti-Stokes Raman holography (CARS holography), which includes illuminating a sample with a pump/probe beam and a Stokes beam to obtain a CARS signal from the sample; and combining the CARS signal with a reference beam to obtain a CARS hologram.

    摘要翻译: 描述了四波混合(FWM)全息术的装置和方法,包括用第一光束,第二光束和第三光束照射样本,并将所产生的FWM信号与成像装置处的参考光束组合以获得全息图像 数据。 在一些示例中,第一和第二梁可以由单个泵 - 探针梁提供。 第三光束可以是斯托克斯光束或反斯托克斯光束。 一个典型的例子是相干反斯托克斯拉曼全息术(CARS holography),其包括用泵/探针光束和斯托克斯光束照射样品以从样品获得CARS信号; 并将CARS信号与参考光束组合以获得CARS全息图。