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    • 9. 发明授权
    • Method, apparatus and computer program product implementing anonymous biometric matching
    • 方法,设备和计算机程序产品实现匿名生物识别匹配
    • US08908929B2
    • 2014-12-09
    • US11939135
    • 2007-11-13
    • Rudolf M. BolleNalini K. RathaJonathan H. Connell
    • Rudolf M. BolleNalini K. RathaJonathan H. Connell
    • G06K9/00G06K9/62
    • G06K9/6232G06K9/00885
    • Method, apparatus and computer program product compare biometrics in an anonymous manner. A first collection of biometrics is transformed using a first cancelable non-invertible biometric transform to create a first collection of transformed biometrics. A second collection of biometrics is transformed using the first cancelable non-invertible biometric transform to create a second collection of transformed biometrics. The first and second collection of transformed biometrics are then compared in the transformed domain to determine if any of the transformed biometrics from the first collection match any of the transformed biometrics from the second collection. If a match is found, the parties respectively maintaining the first and second collections of biometrics exchange information confidential nature of the biometrics are maintained by the entities responsible for the collections, since the biometrics are not compared in an untransformed state.
    • 方法,设备和计算机程序产品以匿名方式比较生物识别。 使用第一可取消的非可逆生物测定变换来转换生物测定的第一集合,以创建经转换的生物特征的第一集合。 使用第一可取消的不可逆生物测定变换来转换第二组生物特征,以创建转化的生物特征的第二集合。 然后将变换的生物特征的第一和第二集合在变换的域中进行比较,以确定来自第一集合的任何转化的生物特征是否匹配来自第二集合的任何转化的生物特征。 如果发现比赛,分别维护第一和第二组生物特征信息交换信息的各方保密生物特征的保密性由负责收集的实体维持,因为生物识别技术在未转化状态下不进行比较。
    • 10. 发明授权
    • Method and apparatus for visual background subtraction with one or more preprocessing modules
    • 用一个或多个预处理模块进行视觉背景扣除的方法和装置
    • US07970229B2
    • 2011-06-28
    • US12127952
    • 2008-05-28
    • Jonathan H. Connell
    • Jonathan H. Connell
    • G06K9/40
    • G06T5/002G06T5/006G06T5/007G06T5/50G06T7/194G06T7/254G06T2207/10024G06T2207/20182H04N1/407H04N1/6027
    • Methods and apparatus are provided for visual background subtraction using one or more preprocessing modules. One or more effects are detected in a received image signal and one or more blocks are selectively enabled to preprocess the image signal to compensate for the detected one or more effects. Visual analysis is then performed on the preprocessed signal using background subtraction. A spatially-variant temporal smoothing of the image signal is also disclosed. The spatially-variant temporal smoothing can be achieved by the mixing of a new intensity value with a previous intensity time-average as determined by a weighting matrix. The mixing can be influenced by a dynamic bias term that is a real-time estimate of a variance at the pixel, such as a degree of change, and the weighting can be determined by a relative stability of an observed value compared to a stability of the time-average.
    • 提供了使用一个或多个预处理模块进行视觉背景减除的方法和装置。 在接收到的图像信号中检测到一个或多个效果,并且选择性地使能一个或多个块来预处理图像信号以补偿检测到的一个或多个效果。 然后使用背景减法对预处理信号执行视觉分析。 还公开了图像信号的空间变化的时间平滑。 空间变化的时间平滑可以通过将新的强度值与由加权矩阵确定的先前的强度时间平均值进行混合来实现。 可以通过动态偏置项影响混合,该动态偏置项是像素处的方差的实时估计,例如变化程度,并且加权可以通过观测值的相对稳定性来确定,与 时间平均。