公开(公告)号：US08068673B2

公开(公告)日：2011-11-29

申请号：US11687338

申请日：2007-03-16

Applicant: Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan ,  Xuetao Hao

Inventor： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan ,  Xuetao Hao

IPC: G06K9/66

CPC classification number: G06T7/66

Abstract: The disclosure relates to a rapid and high precision centroiding method for spots image comprising the following steps. First, the method requires convoluting the gray value of a pixel with a Gaussian filter and judging whether the result thereof exceeds a predetermined threshold. If the value exceeds the predetermined threshold, the method requires marking the current pixel with a flag to identify which spot it belongs to, and then accumulating the product of the gray value and a coordinate value of the same spot; and at the same time, accumulating the gray value of the same spot; and saving the results of the accumulation respectively. If the gray value of the pixel does not exceed the predetermined threshold, the method requires marking the current pixel as a background flag. After all pixels of the image has been disposed of completely, the method includes calculating a quotient of the accumulations of the product of the gray value and the coordinate value and the accumulations of the gray value, and outputting the quotients. At the same time, a centroiding system for spots image is also presented.

Abstract translation: 本公开涉及一种用于斑点图像的快速和高精度重心方法，包括以下步骤。 首先，该方法需要用高斯滤波器对像素的灰度值进行卷积，并判断其结果是否超过预定阈值。 如果该值超过预定阈值，则该方法需要用标志标记当前像素，以标识其属于哪一个点，然后累积灰度值与同一点的坐标值的乘积; 同时累积同一斑点的灰度值; 并分别节省积累的结果。 如果像素的灰度值不超过预定阈值，则该方法需要将当前像素标记为背景标志。 在完全处理图像的所有像素之后，该方法包括计算灰度值与坐标值的乘积的积分和灰度值的积累的商，并输出商。 同时，还提出了斑点图像的重心系统。

公开(公告)号：US07822572B2

公开(公告)日：2010-10-26

申请号：US12036888

申请日：2008-02-25

Applicant: Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

Inventor： Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

IPC: G01C25/00

CPC classification number: G01S3/7867 ,  B64G1/361 ,  B64G1/363

Abstract: A method for calibration of a digital celestial sensor is disclosed. First, an integrated mathematic model for imaging of a celestial sensor is established according to external and internal parameters of the calibration system of the celestial sensor. Second, by rotating two axes of a rotator by different angles, calibration points data are acquired and sent to a processing computer through an interface circuit. Finally, a two-step calibration program is implemented to calculate the calibration parameters by substituting calibration points' data to the integrated mathematic model. An application device of the calibration method is also provided. The device may include a celestial simulator to provide simulated sunlight or starlight, a two-axis rotator to acquire different calibration points' data, and a processing computer to record the calibration points' data and calculate the calibration parameters.

Abstract translation: 公开了一种用于校准数字天体传感器的方法。 首先，根据天体传感器校准系统的外部参数和内部参数建立了天体传感器成像的综合数学模型。 第二，通过旋转不同角度旋转两个轴，获取校准点数据，并通过接口电路发送到处理计算机。 最后，通过将校准点的数据代入综合数学模型，实施了两步校准程序来计算校准参数。 还提供了校准方法的应用装置。 该装置可以包括用于提供模拟太阳光或星光的天体模拟器，用于获取不同校准点数据的双轴旋转器，以及记录校准点数据并计算校准参数的处理计算机。

公开(公告)号：US07615728B2

公开(公告)日：2009-11-10

申请号：US11967772

申请日：2007-12-31

Applicant: Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

Inventor： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

IPC: G01C21/02 ,  G01J1/20

CPC classification number: G01J1/42 ,  G01C21/02 ,  G01J1/04 ,  G01J1/0437 ,  G01J2001/4266 ,  G01S3/784 ,  G01S3/7862

Abstract: The disclosure relates to a signal processing method for multi aperture sun sensor comprising the following steps: reading the information of sunspots in a row from a centroid coordinate memory, judging the absence of sunspots in that row, identifying the row and column index of the sunspots in the complete row, selecting the corresponding calibration parameter based on the row and column index, calculating attitude with the attitude calculation module the corresponding to identified sunspots, averaging the accumulated attitude of all sunspots and outputting the final attitude. At the same time, a signal processing device for multi aperture sun sensor is also presented. It is comprised of a sunspot absence judgment and an identification module and an attitude calculation module. The disclosure implements the integration of sun sensors without additional image processor or attitude processor, reduces field programmable gate array resource and improves the reliability of sun sensors.

Abstract translation: 本发明涉及一种用于多孔径太阳传感器的信号处理方法，包括以下步骤：从质心坐标存储器读取一行中的太阳黑子的信息，判断该行中没有太阳黑子，识别太阳黑子的行和列索引 在完整的行中，根据行和列索引选择相应的校准参数，使用姿态计算模块计算对应于确定的太阳黑子的姿态，对所有太阳黑子的累积姿态进行平均并输出最终姿态。 同时，还提出了一种用于多光圈太阳传感器的信号处理装置。 它由无太阳黑子判断和识别模块和姿态计算模块组成。 该公开实现了太阳传感器的集成，而没有附加的图像处理器或姿态处理器，减少了现场可编程门阵列资源并且提高了太阳传感器的可靠性。

公开(公告)号：US20070183631A1

公开(公告)日：2007-08-09

申请号：US11276117

申请日：2006-02-15

Applicant: Guangjun ZHANG ,  Dazhi CHEN ,  Ying WANG ,  Fuqiang ZHOU ,  Zhenzhong WEI

Inventor： Guangjun ZHANG ,  Dazhi CHEN ,  Ying WANG ,  Fuqiang ZHOU ,  Zhenzhong WEI

IPC: G01B11/16

CPC classification number: G01B11/2513 ,  B64C33/02 ,  G01B11/167 ,  G01B11/2545

Abstract: The present invention relates to a high-performance computer vision system and method for measuring the wings deformation of insects with high flapping-frequency, large stroke-amplitude and excellent mobility during free-flight. A geometrical optic unit composed of a polyhedral reflector with four reflection-planes and four planar reflectors is used to image one high-speed CMOS camera to four virtual cameras, combined with double laser-sheet sources, multiple virtual stereo and structured-light sensors are available to observe the free-flight of insect at different viewpoints simultaneously. In addition, an optoelectronic guiding equipment is included to lead the free-flight of insect and trigger the camera to capture the image sequences of insect-flight automatically. The deformation of insect-wings can be reconstructed by the spatial coordinates of wing-edges and the distorted light-lines projected on the surface of wings.

Abstract translation: 本发明涉及一种高性能计算机视觉系统和方法，用于测量自由飞行期间具有高扑动频率，大冲程振幅和极好移动性的昆虫的翅膀变形。 使用由具有四个反射面的多面体反射器和四个平面反射器组成的几何光学单元将一个高速CMOS相机成像到四个虚拟相机，结合双激光片源，多个虚拟立体声和结构光传感器 可以同时观察不同观点的昆虫自由飞行。 另外还包括一个光电引导设备，以引导昆虫的自由飞行，并触发相机自动捕获昆虫飞行的图像序列。 昆虫翅膀的变形可以通过翼缘的空间坐标和投射在翅膀表面上的变形的光线来重建。

公开(公告)号：US20090112487A1

公开(公告)日：2009-04-30

申请号：US12258398

申请日：2008-10-25

Applicant: Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Fuqiang Zhou ,  Qingbo Li ,  Zhen Liu ,  Qianzhe Liu

Inventor： Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Fuqiang Zhou ,  Qingbo Li ,  Zhen Liu ,  Qianzhe Liu

IPC: G01B11/00

CPC classification number: G01B11/2513 ,  B61K9/08 ,  G01B11/2522

Abstract: The invention discloses a vehicle dynamic measurement device for comprehensive parameters of rail wear, which comprises a vision sensor, a computer and a milometer. A high-speed image acquisition card and a measurement module are installed in the computer. The vision sensor comprises imaging system for rail cross-section and a raster projector which can project more than one light plane perpendicular to the measured rail. The measurement module is used for calculating vertical wear, horizontal wear, the amplitude and wavelength of corrugation wear. The invention also discloses a vehicle dynamic measurement method for comprehensive parameters of rail wear. The invention can increase the sampling rate of image sensing and acquisition hardware equipment with no need of improving the performance of it, thereby satisfy high-speed on-line dynamic measurement requirements for corrugation wear, and the amplitude and wavelength of corrugation wear can be calculated more precisely.

Abstract translation: 本发明公开了一种用于轨道磨损综合参数的车辆动态测量装置，其包括视觉传感器，计算机和千米。 计算机中安装有高速图像采集卡和测量模块。 视觉传感器包括用于轨道横截面的成像系统和光栅投影仪，该投影仪可以投影多个垂直于测量轨道的光平面。 测量模块用于计算垂直磨损，水平磨损，波纹磨损的振幅和波长。 本发明还公开了一种用于铁路磨损综合参数的车辆动态测量方法。 本发明可以增加图像感测和采集硬件设备的采样率，不需要提高其性能，从而满足波纹磨损的高速在线动态测量要求，并且可以计算波纹磨损的幅度和波长 更确切地说。

公开(公告)号：US08927872B2

公开(公告)日：2015-01-06

申请号：US13202209

申请日：2009-02-20

Applicant: Guangjun Zhang ,  Yuanchun Xie

Inventor： Guangjun Zhang ,  Yuanchun Xie

IPC: H05K1/00 ,  H01L23/367 ,  H05K1/02 ,  H05K1/18 ,  H05K3/00 ,  H05K3/42

CPC classification number: H01L23/3677 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48472 ,  H05K1/0204 ,  H05K1/0206 ,  H05K1/0243 ,  H05K1/182 ,  H05K3/0061 ,  H05K3/429 ,  H05K2201/0959 ,  H05K2201/09745 ,  H05K2201/10166 ,  H05K2201/10416 ,  Y10T29/4913 ,  H01L2924/00014 ,  H01L2924/00

Abstract: A thermal pad (602, 612, 622, 702, 712) formed on a Printed Circuit Board and a method (900) of formed the thermal pad (602, 612, 622, 702, 712) are provided. The thermal pad (602, 612, 622, 702, 712) comprises in its interior one or more coins (604, 614, 624, 704, 714) has a height equal to a thickness of the PCB, and is made of metal or alloy, inserted into a corresponding one of one or more plated cutouts straight through the PCB in the thermal pad, and bonded to side walls of the corresponding one of the one or more plated cutouts with a paste capable of resisting a temperature of 250° C. or above. The plurality of through via (606, 616, 626, 706, 716) are plated, and lugged with a solder mask. The thermal pad (602, 612, 622, 702, 712) has a flat top surface and a flat bottom surface, either of which is coplanar with a corresponding one of top and bottom surfaces of the PCB. A PCB having formed thereon the above thermal pad (602, 612, 622, 702, 712) is also provided.

Abstract translation: 形成在印刷电路板上的散热垫（602,612,622,702,712）和形成热垫（602,612,622,702,712）的方法（900）。 散热垫（602,612,622,702,712）在其内部包括一个或多个硬币（604,614,624,704,714）的高度等于PCB的厚度，并且由金属或 合金，将一个或多个电镀切口中相应的一个插入到热垫中的PCB上，并且用能够耐受250℃温度的粘合剂粘合到一个或多个电镀切口中相应的一个的侧壁上 或以上。 多个通孔（606,616,626,706,716）被电镀，并且用焊接掩模拉出。 热垫（602,612,622,702,712）具有平坦的顶表面和平坦的底表面，其中任一个与PCB的顶表面和底表面中的相应一个共面。 还提供了其上形成有上述散热垫（602,612,622,702,712）的PCB。

公开(公告)号：US20130058581A1

公开(公告)日：2013-03-07

申请号：US13696982

申请日：2011-04-25

Applicant: Guangjun Zhang ,  Zhenzhong Wei ,  Weixian Li ,  Zhipeng Cao ,  Yali Wang

Inventor： Guangjun Zhang ,  Zhenzhong Wei ,  Weixian Li ,  Zhipeng Cao ,  Yali Wang

IPC: G06K9/46

CPC classification number: G01B11/005 ,  G02B21/22 ,  G02B21/365

Abstract: The present disclosure provides a microscopic vision measurement method based on the adaptive positioning of the camera coordinate frame which includes: calibrating parameters of a microscopic stereo vision measurement model (201); acquiring pairs of synchronical images and transmitting the acquired images to a computer through an image acquisition card (202); calculating 3D coordinates of feature points in a scene according to the matched pairs of feature points in the scene obtained from the synchronical images and the calibrated parameters of the microscopic stereo vision measurement model (203); and performing specific measurement according to the 3D coordinates of the feature points in the scene (204). With the method, the nonlinearity of the objective function in the microscopic vision calibration optimization is effectively decreased and a better calibration result is obtained.

Abstract translation: 本公开提供了一种基于相机坐标系的自适应定位的微观视觉测量方法，其包括：校准微观立体视觉测量模型（201）的参数; 获取成对的同步图像并通过图像采集卡（202）将所获取的图像发送到计算机; 根据从同步图像获取的场景中的特征点匹配对和微观立体视觉测量模型（203）的校准参数，计算场景中特征点的3D坐标; 以及根据场景（204）中的特征点的3D坐标进行特定测量。 利用该方法，有效降低了微观视觉校准优化中目标函数的非线性，获得了更好的校准结果。

公开(公告)号：US07773797B2

公开(公告)日：2010-08-10

申请号：US11276117

申请日：2006-02-15

Applicant: Guangjun Zhang ,  Dazhi Chen ,  Ying Wang ,  Fuqiang Zhou ,  Zhenzhong Wei

Inventor： Guangjun Zhang ,  Dazhi Chen ,  Ying Wang ,  Fuqiang Zhou ,  Zhenzhong Wei

IPC: G06K9/00 ,  H04N15/00

CPC classification number: G01B11/2513 ,  B64C33/02 ,  G01B11/167 ,  G01B11/2545

Abstract: The present invention relates to a high-performance computer vision system and method for measuring the wings deformation of insects with high flapping-frequency, large stroke-amplitude and excellent mobility during free-flight. A geometrical optic unit composed of a polyhedral reflector with four reflection-planes and four planar reflectors is used to image one high-speed CMOS camera to four virtual cameras, combined with double laser-sheet sources, multiple virtual stereo and structured-light sensors are available to observe the free-flight of insect at different viewpoints simultaneously. In addition, an optoelectronic guiding equipment is included to lead the free-flight of insect and trigger the camera to capture the image sequences of insect-flight automatically. The deformation of insect-wings can be reconstructed by the spatial coordinates of wing-edges and the distorted light-lines projected on the surface of wings.

Abstract translation: 本发明涉及一种高性能计算机视觉系统和方法，用于测量自由飞行期间具有高扑动频率，大冲程振幅和极好移动性的昆虫的翅膀变形。 使用由具有四个反射面的多面体反射器和四个平面反射器组成的几何光学单元将一个高速CMOS相机成像到四个虚拟相机，结合双激光片源，多个虚拟立体声和结构光传感器 可以同时观察不同观点的昆虫自由飞行。 另外还包括一个光电引导设备，以引导昆虫的自由飞行，并触发相机自动捕获昆虫飞行的图像序列。 昆虫翅膀的变形可以通过翼缘的空间坐标和投射在翅膀表面上的变形的光线来重建。

公开(公告)号：US20090012734A1

公开(公告)日：2009-01-08

申请号：US12036888

申请日：2008-02-25

Applicant: Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

Inventor： Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

IPC: G01C25/00

CPC classification number: G01S3/7867 ,  B64G1/361 ,  B64G1/363

Abstract: A method for calibration of a digital celestial sensor is disclosed. The method comprises the following steps: firstly, an integrated mathematic model for imaging of a celestial sensor is established according to external and internal parameters of the calibration system of the celestial sensor. Secondly, by rotating two axes of a rotator by different angles, calibration points data are acquired and sent to a processing computer through an interface circuit. Finally, a two-step calibration program is implemented to calculate the calibration parameters by substituting calibration points' data to the integrated mathematic model. The disclosure also relates to an application device of the calibration method, wherein the device comprises: a celestial simulator to provide simulated sunlight or starlight, a two-axis rotator to acquire different the calibration points' data, a processing computer to record the calibration points' data and calculate the calibration parameters. The calibration method and device apply to many kinds of digital celestial sensors. By integrating external and internal parameters modeling, the disclosure improves the calibration precision. Meanwhile, the whole calibration process is simplified because precise installation and adjustment is not required.

Abstract translation: 公开了一种用于校准数字天体传感器的方法。 该方法包括以下步骤：首先根据天体传感器校准系统的外部参数和内部参数建立天体传感器成像的综合数学模型。 其次，通过以不同的角度旋转旋转器的两个轴，获取校准点数据并通过接口电路发送到处理计算机。 最后，通过将校准点的数据代入综合数学模型，实施了两步校准程序来计算校准参数。 本公开还涉及校准方法的应用装置，其中该装置包括：提供模拟太阳光或星光的天体模拟器，用于获取不同校准点数据的两轴旋转器，记录校准点的处理计算机 '数据并计算校准参数。 校准方法和装置适用于多种数字天体传感器。 通过整合外部和内部参数建模，本公开提高了校准精度。 同时，由于不需要精确的安装和调整，因此简化了整个校准过程。

公开(公告)号：US20080050042A1

公开(公告)日：2008-02-28

申请号：US11561696

申请日：2006-11-20

Applicant: Guangjun Zhang ,  Suqi Li ,  Zhenzhong Wei ,  Zhen Liu

Inventor： Guangjun Zhang ,  Suqi Li ,  Zhenzhong Wei ,  Zhen Liu

IPC: G06K9/32

CPC classification number: G01B11/2504 ,  G06T7/85 ,  G06T19/006 ,  G06T2207/10012

Abstract: The disclosure relates to a hardware-in-the-loop simulation system and method for computer vision. An embodiment of the disclosed system comprises a software simulation and a hardware simulation. The software simulation includes a virtual scene and an observed object that are generated by virtual reality software. The virtual scene images are obtained at different viewpoints. The hardware simulation includes the virtual scene images being projected onto a screen by a projector, wherein the projected scene images are shot by a camera, and where in the direction of the camera is controlled by a pan-tilt.

Abstract translation: 本公开涉及一种用于计算机视觉的硬件在环仿真系统和方法。 所公开的系统的实施例包括软件仿真和硬件仿真。 软件模拟包括由虚拟现实软件生成的虚拟场景和观察对象。 以不同的观点获得虚拟场景图像。 硬件模拟包括通过投影仪投影到屏幕上的虚拟场景图像，其中投影的场景图像被照相机拍摄，并且通过摇摄来控制相机的方向。