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11. 发明授权

US08768868B1 Optimal multi-class classifier threshold-offset estimation with particle swarm optimization for visual object recognition 有权
标题翻译：用于视觉对象识别的粒子群优化的最优多类分类器阈值偏移估计
公开(公告)号：US08768868B1
公开(公告)日：2014-07-01
申请号：US13440881
申请日：2012-04-05
申请人： Shinko Y. Cheng , Yang Chen , Deepak Khosla , Kyungnam Kim
发明人： Shinko Y. Cheng , Yang Chen , Deepak Khosla , Kyungnam Kim
IPC分类号： G06N5/00
CPC分类号： G06N5/00
摘要： Described is a system for multi-class classifier threshold-offset estimation for visual object recognition. The system receives an input image with input features for classifying. A pair-wise classifier is trained for each pair of a plurality of object classes. A set of classification responses is generated, and a multi-class receiver-operating-characteristics (ROC) curve is computed for a set of threshold-offsets. An objective function of classification performance is computed from the ROC curve and optimized using particle swarm optimization (PSO) to generate a set of optimized threshold-offsets. The optimized threshold-offsets are then applied to the classification responses. The resulting classification responses are compared to a predetermined value to classify each input feature as belonging to one object class or another. The tuning of the threshold-offsets with (PSO) improves classification performance in a visual object recognition system.
摘要翻译：描述了用于视觉对象识别的多类分类器阈值偏移估计的系统。系统接收具有输入特征进行分类的输入图像。针对多对象类的每一对训练一对成对的分类器。生成一组分类响应，并计算一组阈值偏移量的多类接收器操作特性（ROC）曲线。从ROC曲线计算分类性能的目标函数，并使用粒子群优化（PSO）进行优化，以生成一组优化的阈值偏移。然后将优化的阈值偏移应用于分类响应。将所得分类响应与预定值进行比较，以将每个输入特征分类为属于一个对象类或另一对象类。使用（PSO）调整阈值偏移可提高视觉对象识别系统中的分类性能。

12. 发明授权

US08756183B1 System for representing, storing, and reconstructing an input signal 有权
标题翻译：用于表示，存储和重建输入信号的系统
公开(公告)号：US08756183B1
公开(公告)日：2014-06-17
申请号：US13160336
申请日：2011-06-14
申请人： Michael J. Daily , Michael D. Howard , Yang Chen , Rashmi N. Sundareswara , David W. Payton
发明人： Michael J. Daily , Michael D. Howard , Yang Chen , Rashmi N. Sundareswara , David W. Payton
IPC分类号： G06E1/00 , G06E3/00 , G06F15/18 , G06G7/00
CPC分类号： G06N3/02 , B25J9/00 , G06N3/049
摘要： Described is a system for representing, storing, and reconstructing an input signal. The system constructs an index of unique polychronous groups (PCGs) from a spiking neuron network. Thereafter, a basis set of spike codes is generated from the unique PCGs. An input signal can then be received, with the input signal being spike encoded using the basis set of spike codes from the unique PCGs. The input signal can then be reconstructed by looking up in a reconstruction table, for each unique PCG in the basis set in temporal order according to firing times, anchor neurons. Using a neuron assignment table, an output location can be looked up for each anchor neuron to place a value based on the firing times of each unique PCG. Finally, the output locations of the anchor neurons can be compiled to reconstruct the input signal.
摘要翻译：描述了用于表示，存储和重建输入信号的系统。该系统构建了一个来自尖峰神经元网络的独特的多组同步组（PCG）的索引。此后，从独特的PCG生成基准组尖峰码。然后可以接收输入信号，其中输入信号使用来自唯一PCG的基准组尖峰码进行尖峰编码。然后可以通过在重构表中查找输入信号，对于根据点火时间的时间顺序在基组中的每个唯一PCG来锚定神经元来重构。使用神经元分配表，可以查找每个锚神经元的输出位置，以根据每个唯一PCG的点火时间放置一个值。最后，可以编译锚神经元的输出位置，以重构输入信号。

13. 发明申请

US20110050878A1 Vision System for Monitoring Humans in Dynamic Environments 有权
标题翻译：动态环境监测人的视觉系统
公开(公告)号：US20110050878A1
公开(公告)日：2011-03-03
申请号：US12549425
申请日：2009-08-28
申请人： James W. Wells , Roland J. Menassa , Charles W. Wampler, II , Swarup Medasani , Yuri Owechko , Kyungnam Kim , Yang Chen
发明人： James W. Wells , Roland J. Menassa , Charles W. Wampler, II , Swarup Medasani , Yuri Owechko , Kyungnam Kim , Yang Chen
IPC分类号： H04N7/18
CPC分类号： H04N7/181
摘要： A safety monitoring system for a workspace area. The workspace area related to a region having automated moveable equipment. A plurality of vision-based imaging devices capturing time-synchronized image data of the workspace area. Each vision-based imaging device repeatedly capturing a time synchronized image of the workspace area from a respective viewpoint that is substantially different from the other respective vision-based imaging devices. A visual processing unit for analyzing the time-synchronized image data. The visual processing unit processes the captured image data for identifying a human from a non-human object within the workspace area. The visual processing unit further determining potential interactions between a human and the automated moveable equipment. The visual processing unit further generating control signals for enabling dynamic reconfiguration of the automated moveable equipment based on the potential interactions between the human and the automated moveable equipment in the workspace area.
摘要翻译：用于工作区的安全监控系统。与具有自动移动设备的区域相关的工作空间区域。多个基于视觉的成像设备捕获工作区域的时间同步图像数据。每个基于视觉的成像设备从与其他各自的基于视觉的成像设备基本上不同的相应视点重复地捕获工作区域的时间同步图像。一种用于分析时间同步图像数据的可视处理单元。视觉处理单元从工作区域内的非人物对象处理用于识别人的拍摄图像数据。视觉处理单元进一步确定人与自动移动设备之间的潜在交互作用。视觉处理单元还基于人与工作空间区域中的自动移动设备之间的潜在交互，进一步产生用于实现自动移动设备的动态重新配置的控制信号。

14. 发明授权

US07777587B2 Minimum pulse width for pulse width modulation control 有权
标题翻译：用于脉宽调制控制的最小脉冲宽度
公开(公告)号：US07777587B2
公开(公告)日：2010-08-17
申请号：US12187359
申请日：2008-08-06
申请人： Brian Stevenson , Parviz Parto , Yang Chen
发明人： Brian Stevenson , Parviz Parto , Yang Chen
IPC分类号： H02M3/335 , H03K7/08
CPC分类号： H03K7/08 , H02M3/156
摘要： The rising edge of a pulse width modulated output signal occurs after an input ramp signal starts to rise. The ramp signal starts to rise after the rising edge of a periodic set signal and before the falling edge of a periodic set signal. A feedback control signal intersects a substantially linear region of the ramp signal to generate a reset signal using a PWM comparator. The periodic set signal and reset signal are input to a latching circuit to generate the pulse width modulated output signal. The minimum pulse width can approach zero while having adequate overdrive to the PWM comparator. Having the rising edge of the reset signal rise before the falling edge of the set signal can allow a zero percent duty cycle without the need for a ramp offset voltage.
摘要翻译：在输入斜坡信号开始上升之后发生脉宽调制输出信号的上升沿。斜波信号在周期性设置信号的上升沿之后和周期性设置信号的下降沿之前开始上升。反馈控制信号与斜坡信号的基本线性区域相交，以使用PWM比较器产生复位信号。周期性设置信号和复位信号输入到锁存电路以产生脉宽调制输出信号。当PWM比较器具有足够的过驱动时，最小脉冲宽度可以接近零。在复位信号的上升沿在设置信号的下降沿之前上升可以允许零百分比的占空比而不需要斜坡失调电压。

15. 发明申请

US20090260999A1 Sleeved to press-open type storage device with a prestressed to open closure 有权
标题翻译：套在带有预应力开盖的压力开式储存装置上
公开(公告)号：US20090260999A1
公开(公告)日：2009-10-22
申请号：US12081511
申请日：2008-04-17
申请人： Tai-Her Yang , Yang Chen
发明人： Tai-Her Yang , Yang Chen
IPC分类号： B65D25/08
CPC分类号： B65D51/2871 , B65D47/141
摘要： The present invention discloses a sleeved to press-open type storage device with a prestressed to open closure having the closure and one side of the storage device connectedly attached by a flexible flake type structure, wherein it is characterized in that the relative stable relationship is that when the closure is closed relative to the storage device, the connecting flake type structure is bent to appear a prestressed status to opening direction thereby keeping the closure to remain at a stable opening status after it is pressed to open.
摘要翻译：本发明公开了一种具有预应力开盖的套筒式开式储存装置，其具有封闭件，并且存储装置的一侧通过柔性片状结构连接地附接，其特征在于，相对稳定的关系是当闭合件相对于存储装置关闭时，连接片状结构被弯曲以对打开方向呈现预应力状态，从而保持封闭件在按压打开之后保持在稳定的打开状态。

16. 发明授权

US07466227B2 Location based vehicle traffic signal alert system 有权
标题翻译：基于位置的车辆交通信号警报系统
公开(公告)号：US07466227B2
公开(公告)日：2008-12-16
申请号：US11378443
申请日：2006-03-17
申请人： Yang Chen , Ranjan Sharma , Shengqiang Wang
发明人： Yang Chen , Ranjan Sharma , Shengqiang Wang
IPC分类号： G08B1/08 , G08B1/00 , G08G1/08
CPC分类号： G08G1/095 , G08G1/096
摘要： Embodiments of the location based vehicle traffic signal alert system, according to the present method and apparatus, may alert drivers as to when vehicles are approaching the traffic signal lights while the signal is yellow or red. In addition, it may also warn drivers when the signal ahead is about to change colors, for example, from green to yellow or from yellow to red. In an alternative embodiment the signal alert system may also send a signal to the engine/brake system of the automobile to perform automatic throttle control or braking when the driver fails to attempt a required stop at the traffic light.
摘要翻译：根据本方法和装置的基于位置的车辆交通信号警报系统的实施例可以警告驾驶员当车辆正在接近交通信号灯时，信号是黄色或红色。此外，当前方的信号即将改变颜色时，例如从绿色变为黄色或从黄色变为红色，也可能会警告司机。在替代实施例中，当驾驶员未能在交通灯上尝试所需停车时，信号警报系统还可以向汽车的发动机/制动系统发送信号，以执行自动节气门控制或制动。

17. 发明申请

US20080049465A1 PRE-BIAS PROTECTION CIRCUIT FOR CONVERTER 有权
标题翻译：用于转换器的预偏置保护电路
公开(公告)号：US20080049465A1
公开(公告)日：2008-02-28
申请号：US11782774
申请日：2007-07-25
申请人： Parviz Parto , Yang Chen
发明人： Parviz Parto , Yang Chen
IPC分类号： H02M1/00
CPC分类号： H02M7/53803 , H02M1/36 , Y10S323/901
摘要： A pre-bias protection circuit for a converter circuit including a switching stage having high-and low-side switches connected in series at a switching node and an output stage connected to the switching node having a capacitor having a pre-existing pre-bias voltage at startup of the converter circuit, the pre-bias protection circuit controlling discharge of the pre-bias voltage when the low-side switch is turned ON during a start up of the converter circuit. The pre-bias protection circuit includes a first circuit for providing a first output; a second circuit providing a second output; and a comparator circuit for comparing the first output and the second output and producing a third output comprising a pulse width modulated signal for driving the low side switch such that the pulse width modulated signal starts with a small duty cycle and thereafter increases to a larger duty cycle, thereby to prevent the pre-bias voltage from discharging during startup.
摘要翻译：一种用于转换器电路的预偏置保护电路，包括具有在开关节点串联连接的高低侧开关的开关级和连接到具有预先存在的预偏置电压的开关节点的输出级的开关级在转换器电路启动时，预偏置保护电路在转换器电路启动期间控制低侧开关接通时控制预偏置电压的放电。预偏置保护电路包括用于提供第一输出的第一电路; 提供第二输出的第二电路; 以及比较器电路，用于比较第一输出和第二输出，并产生包括用于驱动低侧开关的脉冲宽度调制信号的第三输出，使得脉宽调制信号以小占空比开始，然后增加到较大的占空比循环，从而防止在启动期间预偏压放电。

18. 发明授权

US07027615B2 Vision-based highway overhead structure detection system 失效
标题翻译：基于视觉的公路架空结构检测系统
公开(公告)号：US07027615B2
公开(公告)日：2006-04-11
申请号：US09886931
申请日：2001-06-20
申请人： Yang Chen
发明人： Yang Chen
IPC分类号： G06K9/00
CPC分类号： G01S13/931 , B60T2201/08 , B60T2201/089 , G01S13/867 , G08G1/04 , G08G1/164
摘要： An image sequence is inputted 200 from the camera and vertical motion is estimated 202. A windowed horizontal edge projection 204 is extracted from the inputted image sequence 200 and the horizontal edges are projected 206. The horizontal edge projection 206 and the vertical motion estimation 202 are combined in a horizontal segmentation and tracking element 208, and forwarded to an object parameter estimation element 210 where the object's distance and height are estimated. This data is combined in a fusion with radar detection element 212. By correctly matching the overhead objects sensed by the radar and video camera, the proximity and relative speed can be ascertained. Once overhead objects have been identified they can be isolated and not considered for collision avoidance purposes.
摘要翻译：从相机输入图像序列200，并且估计202的垂直运动。从输入的图像序列200中提取开窗的水平边缘投影204，并且水平边缘被投影206。水平边缘投影206和垂直运动估计202在水平分割和跟踪元件208中组合，并被转发到物体参数估计元件210，在该对象参数估计元件210处估计物体的距离和高度。该数据与雷达检测元件212的融合组合。通过正确匹配由雷达和摄像机感测到的架空物体，可以确定接近度和相对速度。一旦已经识别出开销对象，它们可以被隔离，并且不考虑用于冲突避免目的。

19. 发明授权

US06795590B1 SAR and FLIR image registration method 失效
标题翻译： SAR和FLIR图像注册方法
公开(公告)号：US06795590B1
公开(公告)日：2004-09-21
申请号：US09668657
申请日：2000-09-22
申请人： Yang Chen
发明人： Yang Chen
IPC分类号： G06K932
CPC分类号： G06K9/6205 , G06T7/33 , G06T7/37
摘要： There is disclosed herein, a method used to associate or correspond synthetic aperture radar (SAR) and forward looking infrared (FLIR) images. Based on feature points detectable from both images, a two stage approach is taken to address the issue of SAR and FLIR image registration: an initial registration stage where feature points detected from the FLIR image are transformed into the SAR image coordinates; and a residual registration stage where the SAR and FLIR feature points undergo a “Generalized Hough Transform” from which a maximal subset of matching feature points is obtained and the registration transformation can be derived. These two stages are separated into five steps which comprise the SAR and FLIR Image Registration Method: (1) extracting feature points from said SAR and FLIR images; (2) creating an initial registration of the FLIR image; (3) creating a two-dimensional residual registration utilizing a generalized Hough transform; (4) estimating the registration transformation; and, (5) verifying the registration. This method allows the residual registration to be done in a two-dimensional (rather than six) Hough transform, which results in fast and robust implementation as well as reduce the possibility of false registration.
摘要翻译：这里公开了一种用于关联或对应合成孔径雷达（SAR）和前视红外（FLIR）图像的方法。基于从两个图像可检测的特征点，采用两阶段方法来解决SAR和FLIR图像配准的问题：其中从FLIR图像检测到的特征点被转换成SAR图像坐标的初始注册阶段; 以及SAR和FLIR特征点经历“广义霍夫变换”的残留登记阶段，从该特征点获得匹配特征点的最大子集，并且可以导出注册变换。这两个阶段分为五个步骤，包括SAR和FLIR图像注册方法：（1）从SAR和FLIR图像中提取特征点; （2）创建FLIR图像的初始注册; （3）使用广义霍夫变换创建二维残差配准; （4）估算登记变更; 和（5）验证注册。这种方法允许在二维（而不是六个）霍夫变换中进行剩余注册，这导致快速和可靠的实现，并且减少虚假注册的可能性。

20. 发明授权

US10135359B2 Hybrid full bridge-voltage doubler rectifier and single stage LLC converter thereof 有权
公开(公告)号：US10135359B2
公开(公告)日：2018-11-20
申请号：US15962102
申请日：2018-04-25
申请人： Yang Chen , Hongliang Wang , Yan-Fei Liu , Zhanming Li , Yue Fu
发明人： Yang Chen , Hongliang Wang , Yan-Fei Liu , Zhanming Li , Yue Fu
IPC分类号： H02M7/219 , H02M7/25 , H02M7/217 , H02M1/42 , H02M3/335
摘要： A hybrid rectifier that works as either a hybrid full bridge or a voltage doubler. Under 220 V AC input condition, the hybrid rectifier operates in full bridge mode, while at 110 V AC input, it operates as voltage doubler rectifier. The hybrid rectifier may be used with a DC-DC converter, such as an LLC resonant converter, in a power supply. With this mode switching, the LLC converter resonant tank design only takes consideration of 220 V AC input case, such that the required operational input voltage range is reduced, and the efficiency of the LLC converter is optimized. Both the size and power loss are reduced by using a single stage structure instead of the conventional two-stage configuration.

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