公开(公告)号：US20110182477A1

公开(公告)日：2011-07-28

申请号：US12758208

申请日：2010-04-12

申请人： Amir Tamrakar ,  Harpreet Singh Sawhney ,  Qian Yu ,  Ajay Divakaran

发明人： Amir Tamrakar ,  Harpreet Singh Sawhney ,  Qian Yu ,  Ajay Divakaran

IPC分类号： G06K9/00

CPC分类号： G06T7/0002 ,  G06T7/44 ,  G06T7/593 ,  G06T7/62 ,  G06T7/77 ,  G06T2207/20016 ,  G06T2207/30128

摘要： A computer-implemented method for estimating a volume of at least one food item on a food plate is disclosed. A first and second plurality of images are received from different positions above a food plate, wherein angular spacing between the positions of the first plurality of images is greater than angular spacing between the positions of the second plurality of images. A first set of poses of each of the first plurality of images is estimated. A second set of poses of each of the second plurality of images is estimated based on at least the first set of poses. A pair of images taken from each of the first and second plurality of images is rectified based on at least the first and second set of poses. A 3D point cloud is reconstructed based on at least the rectified pair of images. At least one surface of the at least one food item above the food plate is estimated based on at least the reconstructed 3D point cloud. The volume of the at least one food item is estimated based on the at least one surface.

摘要翻译： 公开了一种用于估计食品板上的至少一种食品的体积的计算机实现的方法。 从食品牌上方的不同位置接收第一和第二多个图像，其中第一多个图像的位置之间的角度间隔大于第二多个图像的位置之间的角度间隔。 估计第一多个图像中的每一个的第一组姿势。 基于至少第一组姿势来估计第二组多个图像中的每一个的第二组姿势。 从第一和第二多个图像中的每一个拍摄的一对图像至少基于第一和第二组姿势进行整改。 至少基于整流图像对来重构3D点云。 基于至少重构的3D点云来估计食物板上方的至少一个食物的至少一个表面。 基于至少一个表面来估计至少一个食物的体积。

公开(公告)号：US08345930B2

公开(公告)日：2013-01-01

申请号：US12758208

申请日：2010-04-12

申请人： Amir Tamrakar ,  Harpreet Singh Sawhney ,  Qian Yu ,  Ajay Divakaran

发明人： Amir Tamrakar ,  Harpreet Singh Sawhney ,  Qian Yu ,  Ajay Divakaran

IPC分类号： G06K9/00

CPC分类号： G06T7/0002 ,  G06T7/44 ,  G06T7/593 ,  G06T7/62 ,  G06T7/77 ,  G06T2207/20016 ,  G06T2207/30128

摘要： A computer-implemented method for estimating a volume of at least one food item on a food plate is disclosed. A first and second plurality of images are received from different positions above a food plate, wherein angular spacing between the positions of the first plurality of images is greater than angular spacing between the positions of the second plurality of images. A first set of poses of each of the first plurality of images is estimated. A second set of poses of each of the second plurality of images is estimated based on at least the first set of poses. A pair of images taken from each of the first and second plurality of images is rectified based on at least the first and second set of poses. A 3D point cloud is reconstructed based on at least the rectified pair of images. At least one surface of the at least one food item above the food plate is estimated based on at least the reconstructed 3D point cloud. The volume of the at least one food item is estimated based on the at least one surface.

摘要翻译： 公开了一种用于估计食品板上的至少一种食品的体积的计算机实现的方法。 从食品牌上方的不同位置接收第一和第二多个图像，其中第一多个图像的位置之间的角度间隔大于第二多个图像的位置之间的角度间隔。 估计第一多个图像中的每一个的第一组姿势。 基于至少第一组姿势来估计第二组多个图像中的每一个的第二组姿势。 从第一和第二多个图像中的每一个拍摄的一对图像至少基于第一和第二组姿势进行整改。 至少基于整流图像对来重构3D点云。 基于至少重构的3D点云来估计食物板上方的至少一个食物的至少一个表面。 基于至少一个表面来估计至少一个食物的体积。

公开(公告)号：US08555445B2

公开(公告)日：2013-10-15

申请号：US13499551

申请日：2010-06-29

申请人： Guilan Fu ,  Qian Yu ,  Jian Liu ,  Bichang Wang ,  Xinru Gong ,  Xianozhou Lv ,  Zhi Yi Zou

发明人： Guilan Fu ,  Qian Yu ,  Changsheng Zou ,  Jian Liu ,  Bichang Wang ,  Xinru Gong ,  Xianozhou Lv

IPC分类号： E04H4/16

CPC分类号： E04H4/1654

摘要： A swimming pool bottom hydraulic pushed automatic cleaner includes an underwater cleaner and a control power supply connected by a buoyancy cable. The underwater cleaner includes a housing cover, housing body, filter, double extension shaft motor assembly, hydraulic driven jaw-type clutch impeller combination, water inlet/outlet flow passage, wheel and bracket, an isolated hood and a cable with floaters. Along with the changing of the rotating direction of the motor, the impeller combination is engaged and disengaged under the action of hydraulic power to change the working state of the impeller, thereby changing water outlet of injection water flow and further changing the travel direction of the cleaner. The housing touches a wall to cause the cleaner to adjust the direction after touching the wall. Furthermore, two or more axial-flow pumps are arranged horizontally and parallelly, so that the cleaner has turning function and orderly complete coverage cleaning is realized.

摘要翻译： 游泳池底部液压推动自动清洁器包括水下清洁器和通过浮力电缆连接的控制电源。 水下清洁器包括壳体盖，壳体，过滤器，双延伸轴电机组件，液压驱动颚式离合器叶轮组合，进水/出口流动通道，轮和支架，隔离罩和带有浮子的电缆。 随着电动机旋转方向的变化，叶轮组合在液压动力作用下接合和分离，改变了叶轮的工作状态，从而改变了注入水流的出水口，并进一步改变了 清洁器。 外壳接触墙壁，使吸尘器在接触墙壁后调整方向。 此外，两个或更多个轴流泵被水平和平行布置，使得清洁器具有转向功能并且有序地完成覆盖清洁。

公开(公告)号：US08548404B2

公开(公告)日：2013-10-01

申请号：US13250635

申请日：2011-09-30

申请人： Qian Yu

发明人： Qian Yu

IPC分类号： H03C1/62

CPC分类号： H03F1/3241 ,  H03F1/3247 ,  H03F2200/321 ,  H04L25/03343

摘要： A system for implementing linearization of a radio frequency (RF) power amplifier (PA) in a base station, as well as various component circuitry for implementing said system. By means of a smart partitioning of the signal processing for predistortion between the analog domain and the digital domain, a more linear relationship between the digital input data and the output RF signal is achieved. Linearization of the PA's output signal is obtained using a mixed-signal apparatus. The digital baseband signal enters the RF signal source. The RF signal source comprises an in-band predistortion circuit, a micro-controller and digital modulator. The output of the digital modulator is an RF signal that enters the PA module. The PA module is composed of the PA and the RF power amplifier linearizer (RFPAL). The RFPAL comprises an RF predistortion circuit, and RF signal analyzer and a microcontroller.

摘要翻译： 一种用于实现基站中的射频（RF）功率放大器（PA）的线性化的系统，以及用于实现所述系统的各种组件电路。 通过对模拟域和数字域之间的预失真进行信号处理的智能划分，实现了数字输入数据与输出RF信号之间更为线性的关系。 使用混合信号装置获得PA输出信号的线性化。 数字基带信号进入RF信号源。 RF信号源包括带内预失真电路，微控制器和数字调制器。 数字调制器的输出是进入PA模块的RF信号。 PA模块由PA和RF功率放大器线性化（RFPAL）组成。 RFPAL包括RF预失真电路，RF信号分析器和微控制器。

公开(公告)号：US08391548B1

公开(公告)日：2013-03-05

申请号：US12470480

申请日：2009-05-21

申请人： Gerard Medioni ,  Qian Yu

发明人： Gerard Medioni ,  Qian Yu

IPC分类号： G06K9/00

CPC分类号： G06K9/00771

摘要： Tracking multiple targets can include making different observations based on multiple different frames of one or more digital video feeds, determining an initial cover based on the observations, performing one or more modifications to the initial cover to generate a final cover, and using the final cover to track multiple targets in the one or more digital video feeds. Performing one or more modifications to generate a final cover can include selecting one or more adjustments from a group that includes temporal cover adjustments and spatial cover adjustments, and can include using likelihood information indicative of similarities in motion and appearance to distinguish different targets in the frames.

摘要翻译： 跟踪多个目标可以包括基于一个或多个数字视频馈送的多个不同帧来进行不同的观察，基于观察确定初始覆盖，对初始覆盖执行一个或多个修改以产生最终覆盖，并且使用最终覆盖 以跟踪一个或多个数字视频馈送中的多个目标。 执行一个或多个修改以生成最终封面可以包括从包括时间覆盖调整和空间覆盖调整的组中选择一个或多个调整，并且可以包括使用表示运动和外观的相似性的似然信息来区分帧中的不同目标 。

公开(公告)号：US08374275B2

公开(公告)日：2013-02-12

申请号：US12514515

申请日：2007-06-23

申请人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

发明人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

IPC分类号： H04B7/02 ,  H04B7/06 ,  H04L27/00

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639

摘要： A transmission method in a multiple-input multiple-output (MIMO) communication system, a transmitter in a MIMO communication system and a MIMO communication system are provided. The method comprises the steps of: receiving feedback data representing channel state information from respective receivers of the MIMO communication system; grouping the receivers into one or more groups based on the received feedback data; obtaining a precoding matrix for each group of receivers based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and applying the precoding matrix to input signals for transmission to said each group of receivers.

摘要翻译： 提供了多输入多输出（MIMO）通信系统中的传输方法，MIMO通信系统中的发射机和MIMO通信系统。 该方法包括以下步骤：从MIMO通信系统的各个接收机接收表示信道状态信息的反馈数据; 基于接收到的反馈数据将接收机分组成一个或多个组; 基于所接收的反馈数据获得每组接收机的预编码矩阵，使得与所述每组接收机的各接收机相关联的预编码矩阵中的预编码向量或子矩阵彼此正交; 以及将预编码矩阵应用于输入信号以传输到所述每组接收机。

公开(公告)号：US08351649B1

公开(公告)日：2013-01-08

申请号：US12416913

申请日：2009-04-01

申请人： Gerard Medioni ,  Qian Yu ,  Thang Ba Dinh

发明人： Gerard Medioni ,  Qian Yu ,  Thang Ba Dinh

IPC分类号： G06K9/00

CPC分类号： G06K9/6282 ,  G06K9/00771 ,  G06T7/251 ,  G06T2207/10016 ,  G06T2207/30201

摘要： Technologies for object tracking can include accessing a video feed that captures an object in at least a portion of the video feed; operating a generative tracker to capture appearance variations of the object operating a discriminative tracker to discriminate the object from the object's background, where operating the discriminative tracker can include using a sliding window to process data from the video feed, and advancing the sliding window to focus the discriminative tracker on recent appearance variations of the object; training the generative tracker and the discriminative tracker based on the video feed, where the training can include updating the generative tracker based on an output of the discriminative tracker, and updating the discriminative tracker based on an output of the generative tracker; and tracking the object with information based on an output from the generative tracker and an output from the discriminative tracker.

摘要翻译： 用于对象跟踪的技术可以包括访问在视频馈送的至少一部分中捕获对象的视频馈送; 操作生成跟踪器以捕获操作鉴别跟踪器的对象的外观变化，以区分对象与对象的背景，其中操作鉴别性跟踪器可以包括使用滑动窗口来处理来自视频馈送的数据，以及将滑动窗口推进到焦点 最近出现的对象变化的歧视性追踪器; 基于所述视频馈送来训练所述生成跟踪器和所述歧视性跟踪器，其中所述训练可以包括基于所述识别跟踪器的输出来更新所述生成跟踪器，以及基于所述生成跟踪器的输出来更新所述识别跟踪器; 以及基于来自生成跟踪器的输出和来自辨别性跟踪器的输出的信息来跟踪对象。

公开(公告)号：US20120106600A1

公开(公告)日：2012-05-03

申请号：US12939067

申请日：2010-11-03

申请人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

发明人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

IPC分类号： H04B1/38 ,  H04L25/03 ,  H03F1/26

CPC分类号： H03F1/3241 ,  H03F3/19 ,  H03F2201/3224 ,  H04B2001/0425

摘要： RF predistortion apparatus for making linear the output signal of non-linear components such as RF power amplifiers. The apparatus comprises an RF input line for carrying an RF signal connected to an envelop detector for finding the envelop of the RF signal, a power detector for finding the power of the RF signal and a quadrature modulator. The apparatus also comprises a coefficient vector input line for carrying an input signal that carries one or more coefficients to a digitally controlled analog subsystem (DCAS). The DCAS having circuitry for processing both the output of the envelop detector and the output of the power detector by selecting one or more coefficients from the coefficient vector input line for generating a weighted summation of the power of the RF signal and a weighted summation of the envelop voltage of the RF signal that are output to the quadrature modulator. The quadrature modulator has circuitry for mixing the RF input signal with the output of the DCAS to generate a signal for predistorting the RF input signal feeding the power amplifier.

摘要翻译： 射频预失真装置，用于对诸如RF功率放大器之类的非线性分量的输出信号进行线性化。 该装置包括用于承载连接到包络检测器的RF信号用于找到RF信号的包络的RF输入线，用于找到RF信号的功率的功率检测器和正交调制器。 该装置还包括一个用于承载一个或多个系数到数字控制的模拟子系统（DCAS）的输入信号的系数向量输入线。 DCAS具有用于通过从系数向量输入线中选择一个或多个系数来处理包络检测器的输出和功率检测器的输出的电路，用于产生RF信号的功率的加权求和和 输出到正交调制器的RF信号的包络电压。 正交调制器具有用于将RF输入信号与DCAS的输出混合以产生用于预失真馈送功率放大器的RF输入信号的信号的电路。

公开(公告)号：US20100142633A1

公开(公告)日：2010-06-10

申请号：US12514515

申请日：2007-06-23

申请人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

发明人： Qian Yu ,  Ping Luo ,  Masayuki Hoshino

IPC分类号： H04L27/28

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639

摘要： A transmission method in a multiple-input multiple-output (MIMO) communication system, a transmitter in a MIMO communication system and a MIMO communication system are provided. The method comprises the steps of: receiving feedback data representing channel state information from respective receivers of the MIMO communication system; grouping the receivers into one or more groups based on the received feedback data; obtaining a precoding matrix for each group of receivers based on the received feedback data such that precoding vectors or sub-matrices in the precoding matrix associated with respective receivers of said each group of receivers are orthogonal to each other; and applying the precoding matrix to input signals for transmission to said each group of receivers.

摘要翻译： 提供了多输入多输出（MIMO）通信系统中的传输方法，MIMO通信系统中的发射机和MIMO通信系统。 该方法包括以下步骤：从MIMO通信系统的各接收机接收表示信道状态信息的反馈数据; 基于接收到的反馈数据将接收机分组成一个或多个组; 基于所接收的反馈数据获得每组接收机的预编码矩阵，使得与所述每组接收机的各接收机相关联的预编码矩阵中的预编码向量或子矩阵彼此正交; 以及将预编码矩阵应用于输入信号以传输到所述每组接收机。

公开(公告)号：US07266145B2

公开(公告)日：2007-09-04

申请号：US10321876

申请日：2002-12-17

申请人： Venugopal Balasubramonian ,  Jishnu Bhattacharjee ,  Edem Ibragimov ,  Debanjan Mukherjee ,  Abhijit Phanse ,  Abhijit G. Shanbhag ,  Qian Yu

发明人： Venugopal Balasubramonian ,  Jishnu Bhattacharjee ,  Edem Ibragimov ,  Debanjan Mukherjee ,  Abhijit Phanse ,  Abhijit G. Shanbhag ,  Qian Yu

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03057 ,  H03H21/0012 ,  H03H2021/0096 ,  H04L7/0029 ,  H04L7/0062 ,  H04L7/0079 ,  H04L2025/0349 ,  H04L2025/03611

摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.

摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。