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    • 1. 发明申请
    • METHOD AND APPARATUS FOR ESTIMATING MOTION HOMOGENEITY FOR VIDEO QUALITY ASSESSMENT
    • 用于估计运动质量的视频质量评估的方法和装置
    • WO2014032451A1
    • 2014-03-06
    • PCT/CN2013/077262
    • 2013-06-14
    • THOMSON LICENSINGZHANG, FanLIAO, NingGU, XiaodongCHEN, Zhibo
    • ZHANG, FanLIAO, NingGU, XiaodongCHEN, Zhibo
    • H04N7/64
    • G06T7/0002G06T2207/10016G06T2207/30168H04N17/004H04N19/154
    • When a scene moves homogeneously or fast, human eyes become sensitive to freezing artifacts. To measure the strength of motion homogeneity, a panning homogeneity parameter is estimated to account for isotropic motion vectors, for example, caused by camera panning, tilting, and translation, a zooming homogeneity 5 parameter is estimated for radial symmetric motion vectors, for example, caused by camera zooming, and a rotation homogeneity parameter is estimated for rotational symmetric motion vectors, for example, caused by camera rotation. Subsequently, an overall motion homogeneity parameter is estimate based on the panning, zooming, and rotation homogeneity parameters. A freezing distortion factor can then 10 be estimated using the overall motion homogeneity parameter. The freezing distortion factor, combined with compression and slicing distortion factors, can be used to estimate a video quality metric.
    • 当场景均匀或快速移动时,人类的眼睛变得对冻结文物敏感。 为了测量运动均匀性的强度,估计平移均匀性参数以解决各向同性运动矢量,例如由相机平移,倾斜和平移引起的,对于径向对称运动矢量估计缩放均匀性5参数,例如, 由相机变焦引起的旋转均匀性参数,例如由摄像机旋转引起的旋转对称运动矢量。 随后,基于平移,缩放和旋转均匀性参数来估计总体运动均匀性参数。 然后可以使用整体运动均匀性参数来估计冻结失真因子10。 结合压缩和切片失真因子的冻结失真因子可用于估计视频质量度量。
    • 2. 发明申请
    • HYBRID MULTI-TENANCY CLOUD PLATFORM
    • 混合多云天气平台
    • WO2013138979A1
    • 2013-09-26
    • PCT/CN2012/072537
    • 2012-03-19
    • EMPIRE TECHNOLOGY DEVELOPMENT LLCCAO, JunweiZHANG, Fan
    • CAO, JunweiZHANG, Fan
    • H04L29/06
    • G06F21/31H04L67/10H04W4/60
    • Technologies are presented for a hybrid cloud-based service model combining separate database / separate schema, shared database / separate schema, and shared database / shared schema architectures suitable for serving multiple tenants while addressing varying security needs. Roles and security level needs of different tenants may be determined based on tenant declaration or inference from tenant attributes. Tenants may then be assigned to suitable clouds or sub-clouds based on their security level needs. In some examples, a claims- based access control authorization model such as federation may be employed to support interactions between the three different types of clouds or sub-clouds under the umbrella of a single cloud-based service provider while maintaining application and data security.
    • 为混合基于云的服务模型提供了技术,该模型结合了独立的数据库/单独架构,共享数据库/独立模式,以及共享数据库/共享模式架构,适用于服务多个租户,同时解决不同的安全需求。 不同租户的角色和安全级别需求可以根据租客声明或租户属性的推论来确定。 然后可以根据其安全级别的需要将租户分配给合适的云或子云。 在一些示例中,可以采用诸如联合的基于声明的访问控制授权模型来支持在单个基于云的服务提供商的伞下的三种不同类型的云或子云之间的交互,同时保持应用和数据安全性。
    • 4. 发明申请
    • VIDEO QUALITY MEASUREMENT
    • 视频质量测量
    • WO2013075318A1
    • 2013-05-30
    • PCT/CN2011/082870
    • 2011-11-24
    • THOMSON LICENSINGZHANG, FanLIAO, NingXIE, KaiCHEN, Zhibo
    • ZHANG, FanLIAO, NingXIE, KaiCHEN, Zhibo
    • H04N7/64
    • H04N19/00933H04N17/004H04N19/895
    • A particular implementation receives a bitstream and derives parameters from the bitstream. The parameters include quantization parameters, content unpredictability parameters, ratios of lost blocks, ratios of propagated blocks, error concealment distances, motion vectors, durations of freezing, and frame rates. Using these parameters, a compression distortion factor, a slicing distortion factor, and a freezing distortion factor are estimated respectively for distortions resulting from video compression, a slicing mode error concealment, and a freezing slicing mode error concealment. The distortion factors are then mapped to a composite video quality score. For applications with limited computational power, the estimation of distortion factors can be simplified. In particular, the compression distortion factor, the slicing distortion factor, and the freezing distortion factor can be predicted from quantization parameters, ratios of lost blocks, and durations of freezing, respectively.
    • 特定实现接收比特流并从比特流导出参数。 参数包括量化参数,内容不可预测性参数,丢失块的比率,传播块的比率,错误隐藏距离,运动矢量,冻结持续时间和帧速率。 分别使用这些参数来估计压缩失真因子,切片失真因子和冻结失真因子,用于由视频压缩,切片模式错误隐藏和冷冻切片模式错误隐藏产生的失真。 然后将失真因子映射到复合视频质量得分。 对于具有有限计算能力的应用,可以简化失真因子的估计。 具体地,压缩失真因子,切片失真因子和冻结失真因子可以分别从量化参数,丢失块的比率和冻结时间预测。
    • 5. 发明申请
    • VIDEO ENCODING AND DECODING BASED ON IMAGE REFINEMENT
    • 基于图像精化的视频编码和解码
    • WO2013063784A1
    • 2013-05-10
    • PCT/CN2011/081744
    • 2011-11-03
    • THOMSON LICENSINGJIANG, WenfeiZHANG, FanCHEN, Zhibo
    • JIANG, WenfeiZHANG, FanCHEN, Zhibo
    • H04N7/32
    • H04N19/86H04N19/103H04N19/117H04N19/124H04N19/132H04N19/14H04N19/147H04N19/176H04N19/192H04N19/82
    • A particular implementation forms an initial reconstructed image block from inverse quantization and inverse transform, and further refines the reconstructed image block using pixels from neighboring reconstructed blocks. The image block may be refined using a bilateral filter, whose space parameter and range parameter are adaptive to the quantization parameter. The particular implementation can be used in both encoding and decoding when reconstructing an image block. When used in encoding, the particular implementation can be used jointly with coefficient truncation, where some non-zero transform coefficients are set to zero. The number of remaining non-zero transform coefficients after coefficient truncation may be adaptive to the quantization parameter, the variance of the image block, the number of non-zero transform coefficients of the image block, and the index of the last non- zero transform coefficient in a zigzag scanning order.
    • 特定的实施方式从反量化和逆变换形成初始重建图像块,并且使用来自相邻重构块的像素进一步精化重构图像块。 图像块可以使用双边滤波器进行精细化,该双边滤波器的空间参数和范围参数适应量化参数。 当重建图像块时,特定的实现可以用于编码和解码两者。 当用于编码时,特定的实现可以与系数截断一起使用,其中一些非零变换系数被设置为零。 系数截断后剩余的非零变换系数的数量可以适应于量化参数,图像块的方差,图像块的非零变换系数的数量以及最后的非零变换的索引 系数为锯齿形扫描顺序。
    • 6. 发明申请
    • METHOD AND DEVICE FOR LOSSY COMPRESS-ENCODING DATA AND CORRESPONDING METHOD AND DEVICE FOR RECONSTRUCTING DATA
    • 用于破坏编码数据的方法和装置以及用于重构数据的相应方法和装置
    • WO2012142731A1
    • 2012-10-26
    • PCT/CN2011/000705
    • 2011-04-22
    • TECHNICOLOR (CHINA) TECHNOLOGY CO. LTD.JIANG, WenfeiCHEN, ZhiboZHANG, Fan
    • JIANG, WenfeiCHEN, ZhiboZHANG, Fan
    • H04N7/46H04N7/50
    • H04N19/50H04N19/124H04N19/132H04N19/147H04N19/18H04N19/467H04N19/60H04N19/86
    • The invention proposes modification of quantized coefficients for signalling of a post-processing method. Therefore, it is proposed a method for lossy compress- encoding data comprising at least one of image data and audio data. Said method comprises determining quantized coefficients using a quantization of a discrete cosine transformed residual of a prediction of said data. Said method further comprises modifying said quantized coefficients for minimizing rate-distortion cost wherein distortion is determined using a post-processed reconstruction of the data, the post-processed reconstruction being post-processed according to a post¬ processing method, and compress-encoding said modified coefficients. In said proposed method, the post-processing method is that one of n>l different predetermined post processing method candidates whose position in an predetermined order of arrangement of the post processing method candidates equals a remainder of division, by n, of a sum of the modified coefficients. Doing so removes the overhead of flags in the bit stream.
    • 本发明提出了对后处理方法的信令的量化系数的修改。 因此,提出了一种包括图像数据和音频数据中的至少一个的有损压缩编码数据的方法。 所述方法包括使用所述数据的预测的离散余弦变换残差的量化来确定量化系数。 所述方法还包括修改所述量化系数以最小化速率失真成本,其中使用所述数据的后处理重建来确定失真,所述后处理重构根据后处理方法进行后处理,并且对所述 修正系数。 在所述提出的方法中,后处理方法是n≥1个不同的预定后处理方法候选中的一个,其处理方法候选的预定排列顺序等于n的余数除以n 修正系数。 这样做会消除位流中标志的开销。
    • 9. 发明申请
    • INNER MAGNETIC TRANSDUCER WITH MULTIPLE MAGNECTIC GAPS AND MULTIPLE COILS AND PREPARATION METHOD THEREOF
    • 具有多个磁性粒子和多个线圈的内置磁传感器及其制备方法
    • WO2009103247A1
    • 2009-08-27
    • PCT/CN2009070507
    • 2009-02-23
    • ZHANG FAN
    • ZHANG FAN
    • H04R9/02
    • H04R9/025H04R9/046H04R9/063
    • An inner magnetic transducer with multiple magnetic gaps and multiple coils, and a preparation method thereof. The inner magnetic transducer with multiple magnetic gaps and multiple coils includes a non-magnetic material frame and a non-magnetic material bearer frame. The inner magnetic transducer with multiple magnetic gaps and multiple coils includes two or more coaxial annular magnetic gaps with the same diameter value, two suits of symmetric magnetic paths, and a symmetric coil. In the transducer, enwinding direction, connection mode and parameters of coils are decided, in order to ensure that the value of the inductance of coils and the opposing electromotive force obtained during the process of moving to and fro are counteracted by each other. The inner magnetic transducer with multiple magnetic gaps and multiple coils has resistance load character or approximately has a resistance load character, simultaneously, has high sensitivity, high analytic capability, and high fidelity.
    • 具有多个磁隙和多个线圈的内磁换能器及其制备方法。 具有多个磁隙和多个线圈的内部磁传感器包括非磁性材料框架和非磁性材料承载框架。 具有多个磁隙和多个线圈的内部磁传感器包括具有相同直径值的两个或更多个同轴环形磁隙,两个对称磁路和两个对称线圈。 在换能器中,确定线圈的缠绕方向,连接方式和参数,以确保线圈的电感值和在往复运动过程中获得的相对电动势相互抵消。 具有多个磁隙和多个线圈的内磁换能器具有电阻负载特性或近似具有电阻负载特性,同时具有高灵敏度,高分析能力和高保真度。