Method for Secure Evaluation of a Function Applied to Encrypted Signals
    41.
    发明申请
    Method for Secure Evaluation of a Function Applied to Encrypted Signals 审中-公开
    用于安全评估应用于加密信号的功能的方法

    公开(公告)号:US20100329448A1

    公开(公告)日:2010-12-30

    申请号:US12495721

    申请日:2009-06-30

    IPC分类号: H04L9/28

    摘要: Embodiments of the invention describe a system and a method for determining securely a result of applying a function to a first encrypted signal and a second encrypted signal resulted from encrypting a first signal and a second signal respectively, The method expresses the function as a linear combination of homomorphic components, wherein a homomorphic component is an algebraic combination of the first signals and the second signal such that an encrypted result of the algebraic combination is suitable to be calculated directly from the first encrypted signal and the second encrypted signal using homomorphic properties. Next, the method determines encrypted results of the homomorphic components from the first encrypted signal and the second encrypted signal, and combines the encrypted results of the homomorphic components according to the linear combination to produce the encrypted result of the function. The method is executed by a plurality of processors.

    摘要翻译: 本发明的实施例描述了一种系统和方法,用于安全地确定对第一加密信号应用功能的结果以及由加密第一信号和第二信号而产生的第二加密信号。该方法将该功能表示为线性组合 的同态分量,其中同态分量是第一信号和第二信号的代数组合,使得代数组合的加密结果适于直接从第一加密信号和使用同态属性的第二加密信号计算。 接下来,该方法从第一加密信号和第二加密信号确定同态分量的加密结果,并且根据线性组合组合同态分量的加密结果以产生该功能的加密结果。 该方法由多个处理器执行。

    Method and System for Decoding Multiview Videos with Prediction Dependencies
    42.
    发明申请
    Method and System for Decoding Multiview Videos with Prediction Dependencies 有权
    用预测依赖关系解码多视点视频的方法和系统

    公开(公告)号:US20100322311A1

    公开(公告)日:2010-12-23

    申请号:US12871249

    申请日:2010-08-30

    IPC分类号: H04N7/32

    摘要: Multiview videos are acquired of a scene with corresponding cameras arranged at poses, such that there is view overlap between any pair of cameras. V-frames are generated from the multiview videos. The V-frames are encoded using only spatial prediction. Then, the V-frames are inserted periodically in an encoded bit stream to provide random temporal access to the multiview videos. Additional view dependency information enables the decoding of a reduced number of frames prior to accessing randomly a target frame for a specified view and time, and decoding the target frame. The method also decodes multiview videos by maintaining a reference picture list for a current frame of a plurality of multiview videos, and predicting each current frame of the plurality of multiview videos according to reference pictures indexed by the associated reference picture list.

    摘要翻译: 多视点视频被采集到具有以姿势布置的相应摄像机的场景,使得在任何一对摄像机之间存在视图重叠。 V帧是从多视角视频生成的。 V帧仅使用空间预测编码。 然后,将V帧周期性地插入到编码比特流中,以便为多视点视频提供随机的时间访问。 附加的视图依赖性信息使得能够在对指定的视图和时间的随机访问目标帧之前对减少数量的帧进行解码,以及对目标帧进行解码。 该方法还通过维护多个多视角视频的当前帧的参考图片列表,并根据由相关参考图片列表索引的参考图片来预测多个多视角视频中的每个当前帧来对多视点视频进行解码。

    Method for Embedding a Message into a Document
    44.
    发明申请
    Method for Embedding a Message into a Document 审中-公开
    将消息嵌入到文档中的方法

    公开(公告)号:US20100142004A1

    公开(公告)日:2010-06-10

    申请号:US12329869

    申请日:2008-12-08

    IPC分类号: G06K15/00 B42D15/00

    摘要: A method that embeds a message into a document containing a number of glyphs and extracts said message from a degraded version of said document. Each symbol of the message is represented as a geometrical relationship of two discrete sets of pixels, in which the pixels in each set are adjacent. The pixels associated with the glyphs selected from the document are combined with the discrete sets of pixels to produce modified glyphs that contain the embedded message.

    摘要翻译: 将消息嵌入到包含多个字形的文档中并从所述文档的劣化版本提取所述消息的方法。 消息的每个符号被表示为两组离散像素组的几何关系,其中每组中的像素相邻。 与从文档中选择的字形相关联的像素与离散的像素组合以产生包含嵌入消息的修改字形。

    Server-Driven Progressive Image Transmission
    46.
    发明申请
    Server-Driven Progressive Image Transmission 审中-公开
    服务器驱动的逐行图像传输

    公开(公告)号:US20090003270A1

    公开(公告)日:2009-01-01

    申请号:US11770874

    申请日:2007-06-29

    IPC分类号: H04L29/06

    摘要: A system and method generates a progressive codestream representing an image. The codestream of packets representing an image is parsed to obtain a parsed packets and metadata for each parsed packet. The parsed packets are decomposed to decomposed packets according to the metadata and a progressive transmission policy. The decomposed packets are assigned to sequentially arranged segments according to the metadata and the transmission policy, in which each segment includes a header, and in which an ordering of the packet in the codestream is different than an ordering of the decomposed packets in the plurality of segments. A client composes the decomposed packets according to the header in the segments to progressively reconstruct the image in the client.

    摘要翻译: 系统和方法产生代表图像的渐进码流。 解析代表图像的数据包的码流,以获得每个解析的数据包的解析数据包和元数据。 解析的分组根据元数据和逐行传输策略被分解成分解的分组。 分解的分组根据元数据和传输策略被分配到顺序排列的分段,其中每个分段包括报头,并且其中码流中的分组的排序不同于多个分组中的分解分组的排序 细分。 客户端根据片段中的标题组合分解的包,以逐渐重建客户端中的图像。

    Method and System for Acquiring, Encoding, Decoding and Displaying 3D Light Fields
    49.
    发明申请
    Method and System for Acquiring, Encoding, Decoding and Displaying 3D Light Fields 有权
    用于获取,编码,解码和显示3D光场的方法和系统

    公开(公告)号:US20080043095A1

    公开(公告)日:2008-02-21

    申请号:US11696562

    申请日:2007-04-04

    IPC分类号: H04N15/00

    摘要: A method and system acquire and display light fields. A continuous light field is reconstructed from input samples of an input light field of a 3D scene acquired by cameras according to an acquisition parameterization. The continuous light is reparameterized according to a display parameterization and then prefiltering and sampled to produce output samples having the display parametrization. The output samples are displayed as an output light field using a 3D display device. The reconstruction can be performed by interpolating the input samples having the different views;

    摘要翻译: 一种方法和系统获取和显示光场。 根据采集参数化,由摄像机获取的3D场景的输入光场的输入样本重建连续光场。 根据显示参数化对连续光进行重新参数化,然后对其进行预过滤和采样,以产生具有显示参数化的输出样本。 使用3D显示装置将输出样本显示为输出光场。 可以通过内插具有不同视图的输入样本来执行重建;

    Error resilient encoding method for inter-frames of compressed videos
    50.
    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

    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。