公开(公告)号：US09311555B2

公开(公告)日：2016-04-12

申请号：US14482629

申请日：2014-09-10

Applicant: Khalifa University of Science, Technology and Research

Inventor： Ehab Najeh Salahat ,  Hani Hasan Mustafa Saleh ,  Andrzej Stefan Sluzek ,  Mahmoud Al-Qutayri ,  Baker Mohammad ,  Mohammed Ismail Elnaggar

IPC: G06K9/46 ,  H04N7/18 ,  G06K9/52

CPC classification number: H04N7/18 ,  G06K9/00986 ,  G06K9/3233 ,  G06T7/246 ,  G06T2207/30232

Abstract: Architecture for real-time extraction of maximally stable extremal regions (MSERs) is disclosed. The architecture includes a communication interface and processing circuitry that are configured in hardware to receive a data stream of an intensity image in real-time and provide labels for light image regions and dark image regions within the intensity image that match a given intensity threshold during a single processing pass. The communication interface and processing circuitry are also configured in hardware to find extremal regions within the intensity image based upon the labels and to determine MSER ellipses parameters based upon the extremal regions and MSER criteria. In at least one embodiment, the MSER criteria include minimum and maximum MSER areas, and an acceptable growth rate value for MSER areas. In another embodiment, the MSER criteria include a nested MSER tolerance value.

Abstract translation: 公开了用于实时提取最大稳定极值区域（MSER）的架构。 该架构包括通信接口和处理电路，其被配置为硬件以实时地接收强度图像的数据流，并且提供在强度图像内的光图像区域和暗图像区域的标签，所述亮度图像区域和暗图像区域在一个 单处理通行证 通信接口和处理电路也被配置在硬件中以基于标签找到强度图像内的极值区域，并且基于极值区域和MSER标准来确定MSER椭圆参数。 在至少一个实施例中，MSER标准包括MSER区域的最小和最大MSER区域以及可接受的生长速率值。 在另一个实施例中，MSER标准包括嵌套的MSER容差值。

公开(公告)号：US20160070970A1

公开(公告)日：2016-03-10

申请号：US14482629

申请日：2014-09-10

Applicant: Khalifa University of Science, Technology and Research

Inventor： Ehab Najeh Salahat ,  Hani Hasan Mustafa Saleh ,  Andrzej Stefan Sluzek ,  Mahmoud Al-Qutayri ,  Baker Mohammad ,  Mohammed Ismail Elnaggar

IPC: G06K9/46 ,  G06K9/52 ,  H04N7/18

CPC classification number: H04N7/18 ,  G06K9/00986 ,  G06K9/3233 ,  G06T7/246 ,  G06T2207/30232

Abstract: Architecture for real-time extraction of maximally stable extremal regions (MSERs) is disclosed. The architecture includes a communication interface and processing circuitry that are configured in hardware to receive a data stream of an intensity image in real-time and provide labels for light image regions and dark image regions within the intensity image that match a given intensity threshold during a single processing pass. The communication interface and processing circuitry are also configured in hardware to find extremal regions within the intensity image based upon the labels and to determine MSER ellipses parameters based upon the extremal regions and MSER criteria. In at least one embodiment, the MSER criteria include minimum and maximum MSER areas, and an acceptable growth rate value for MSER areas. In another embodiment, the MSER criteria include a nested MSER tolerance value.

Abstract translation: 公开了用于实时提取最大稳定极值区域（MSER）的架构。 该架构包括通信接口和处理电路，其被配置为硬件以实时地接收强度图像的数据流，并且提供在强度图像内的光图像区域和暗图像区域的标签，该标签在一 单处理通行证 通信接口和处理电路也被配置在硬件中以基于标签找到强度图像内的极值区域，并且基于极值区域和MSER标准来确定MSER椭圆参数。 在至少一个实施例中，MSER标准包括MSER区域的最小和最大MSER区域以及可接受的生长速率值。 在另一个实施例中，MSER标准包括嵌套的MSER容差值。

公开(公告)号：US09270607B2

公开(公告)日：2016-02-23

申请号：US14100328

申请日：2013-12-09

Applicant: Khalifa University of Science, Technology, and Research ,  British Telecommunications plc ,  Emirates Telecommunications Corporation

Inventor： Zdenek Chaloupka ,  James Aweya

IPC: H04J3/06 ,  H04L12/841 ,  H04L29/06 ,  H04L12/70 ,  H04J3/14

CPC classification number: H04L47/283 ,  H04J3/0602 ,  H04J3/0638 ,  H04J3/0661 ,  H04J3/0667 ,  H04J3/14 ,  H04L69/28 ,  H04L2012/5674

Abstract: This invention relates to packet selection techniques that can be used in conjunction with a clock recovery mechanism to mitigate the effects of packet delay variation on timing messages exchanged over a packet network, particularly when seeking to synchronize the time of a clock in a slave device to that of a master clock. The packet selection techniques can assist in reducing the noise in the recovered clock signal at the slave device, allowing recovery to a higher quality. Embodiments of the invention provide techniques based on extracting timing packets that create a constant interval between the arrival of selected packets at the slave device and on extracting timing packets which are closest to making the interval between arrival of the selected packets equal to the interval between the departure of the packets.

Abstract translation: 本发明涉及可以与时钟恢复机制一起使用的分组选择技术，以减轻分组延迟变化对在分组网络上交换的定时消息的影响，特别是当寻求将从设备中的时钟的时间同步到 一个主时钟。 分组选择技术可以帮助减少从设备恢复的时钟信号中的噪声，从而允许恢复到更高的质量。 本发明的实施例提供了基于提取在从设备的所选分组到达之间创建恒定间隔的定时分组的技术，以及提取最接近于使所选分组的到达之间的间隔等于所述分组之间的间隔的定时分组 包的离开

公开(公告)号：US09184861B2

公开(公告)日：2015-11-10

申请号：US14043068

申请日：2013-10-01

Applicant: Khalifa University of Science, Technology, and Research ,  British Telecommunications plc ,  Emirates Telecommunications Corporation

Inventor： James Aweya

IPC: H04J3/06

CPC classification number: H04J3/0667 ,  H04J3/0685

Abstract: This invention relates to methods and devices for time and frequency synchronization. The invention has particular application where time and frequency synchronization over packet networks using, for example, the IEEE 1588 Precision Time Protocol (PTP) is being carried out. The primary challenge in clock distribution over packet networks is the variable transit delays experienced by timing packets, packet delay variations (PDVs). Embodiments of the invention provide a method for time offset alignment with PDV compensation where a synchronized frequency signal is available at a slave device via Synchronous Ethernet and is used to determine the compensation parameters for the PDV.

Abstract translation: 本发明涉及用于时间和频率同步的方法和装置。 本发明具有特定的应用，其中使用例如IEEE 1588精确时间协议（PTP）的分组网络进行时间和频率同步。 分组网络中时钟分配的主要挑战是定时分组，分组延迟变化（PDV）所经历的可变传输延迟。 本发明的实施例提供了一种用于与PDV补偿的时间偏移对准的方法，其中同步的频率信号在从属设备经由同步以太网可用并且用于确定PDV的补偿参数。

公开(公告)号：US20150172320A1

公开(公告)日：2015-06-18

申请号：US14109016

申请日：2013-12-17

Applicant: Khalifa University of Science, Technology, and Research ,  Emirates Telecommunications Corporation ,  British Telecommunications plc

Inventor： Maurizio Colombo ,  Marcello Leida ,  Ernesto Damiani

IPC: H04L29/06

CPC classification number: H04L63/20 ,  H04L63/105

Abstract: The invention relates to a method and system which provides access control and access control enforcement particularly in relation to business process data streams. Embodiments of the invention provide a method and a set of components (referred to as: Policy Administration Point, Policy Enforcement Point, Filter Updater, Log De-Multiplexer) for fast online filtering of process logs based on access rights. In one embodiment the method comprises a series of steps to (i) encode each user's access rights to the process log in a machine readable format (ii) use such encoding together with incoming process events to compute a custom online filter to be applied to the process log as it is being recorded (iii) execute logical log de-multiplexing, enabling each user to query, inspect and monitor a separate event flow. In specific embodiments, the four components are virtual devices, respectively in charge of policy encoding (Policy Administration Point), policy evaluation and enforcement (Policy Enforcement Point), computation of an online filter with enforcement of log integrity constraints (Filter Updater), and generation of virtual event flows and support for policy changes and rights' revocations (Log De-Multiplexer).

Abstract translation: 本发明涉及一种提供访问控制和访问控制强制的方法和系统，特别是与业务流程数据流有关。 本发明的实施例提供了一种方法和一组组件（称为：策略管理点，策略执行点，过滤器更新器，日志去多路复用器），用于基于访问权限快速在线过滤进程日志。 在一个实施例中，该方法包括以下一系列步骤：（i）以机器可读格式对每个用户对进程日志的访问权限进行编码（ii）使用这样的编码以及输入的处理事件来计算要应用于 正在记录进程日志（iii）执行逻辑日志解复用，使每个用户能够查询，检查和监视单独的事件流。 在具体实施例中，四个组件分别是负责策略编码（策略管理点），策略评估和实施（策略执行点）的虚拟设备，具有日志完整性约束（Filter Updater）强制的在线过滤器的计算，以及 生成虚拟事件流，支持政策更改和权利撤销（Log De-Multiplexer）。