公开(公告)号：US20130209751A1

公开(公告)日：2013-08-15

申请号：US13698728

申请日：2011-05-18

申请人： Guangjun Zhang ,  José Zimmer ,  He Feng ,  Gerhard Lautenschlaeger ,  Armin Vogl

发明人： Guangjun Zhang ,  José Zimmer ,  He Feng ,  Gerhard Lautenschlaeger ,  Armin Vogl

IPC分类号： C03C3/112

CPC分类号： C03C3/112 ,  C03C3/095 ,  Y10T428/24628 ,  Y10T428/315

摘要： An alkali aluminosilicate glass for 3D precision molding and thermal bending is provided. The glass has a working point lower than 1200° C. (104 dPas) and a transition temperature Tg lower than 610° C. The glass has, based on a sum of all the components in percentage by weight, 51-63% of Si02; 5-18% of Al203; 8-16% of Na20; 0-6% of K20; 3.5-10% of MgO; 0-5% of B203; 0-4.5% of Li20; 0-5% of ZnO; 0-8% of CaO; 0.1-2.5% of Zr02; 0.01-

摘要翻译： 提供用于3D精密成型和热弯曲的碱性硅铝酸盐玻璃。 该玻璃具有低于1200℃（104dPas）的工作点和低于610℃的转变温度Tg。该玻璃基于所有组分的总和，以重量百分比计，51-63％的SiO 2 ; 5-18％Al2O3; 8-16％的Na2O; 0〜6％K20; 3.5-10％的MgO; 0〜5％的B203; 0-4.5％的Li20; 0-5％ZnO; 0-8％的CaO; 0.1-2.5％的ZrO2; 0.01-0.2％的CeO2; 0-0.5％的F2; 0.01-0.5％的SnO 2; 0-3％的BaO; 0-3％的SrO; 0〜0.5％的Yb203; 其中SiO 2 + Al 2 O 3的总和为63〜81％，CaO + MgO的总和为3.5〜18％，Na 2 O /（Li 2 O + Na 2 O + K 2 O）的比例为0.4〜1.5。

公开(公告)号：US20090112487A1

公开(公告)日：2009-04-30

申请号：US12258398

申请日：2008-10-25

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

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

IPC分类号： G01B11/00

CPC分类号： G01B11/2513 ,  B61K9/08 ,  G01B11/2522

摘要： 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.

摘要翻译： 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：US08068673B2

公开(公告)日：2011-11-29

申请号：US11687338

申请日：2007-03-16

申请人： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan ,  Xuetao Hao

发明人： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan ,  Xuetao Hao

IPC分类号： G06K9/66

CPC分类号： G06T7/66

摘要： 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.

摘要翻译： 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

申请人： Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

发明人： Guangjun Zhang ,  Xinguo Wei ,  Qiaoyun Fan ,  Jie Jiang

IPC分类号： G01C25/00

CPC分类号： G01S3/7867 ,  B64G1/361 ,  B64G1/363

摘要： 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.

摘要翻译： 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

申请人： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

发明人： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

IPC分类号： G01C21/02 ,  G01J1/20

CPC分类号： G01J1/42 ,  G01C21/02 ,  G01J1/04 ,  G01J1/0437 ,  G01J2001/4266 ,  G01S3/784 ,  G01S3/7862

摘要： 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.

摘要翻译： 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：US08934721B2

公开(公告)日：2015-01-13

申请号：US13696982

申请日：2011-04-25

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

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

IPC分类号： G06K9/36 ,  G01B11/00 ,  G02B21/36 ,  G02B21/22

CPC分类号： G01B11/005 ,  G02B21/22 ,  G02B21/365

摘要： 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.

摘要翻译： 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：US08019147B2

公开(公告)日：2011-09-13

申请号：US12025741

申请日：2008-02-04

申请人： Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Qianzhe Liu

发明人： Guangjun Zhang ,  Junhua Sun ,  Zhenzhong Wei ,  Qianzhe Liu

IPC分类号： G06K9/00

CPC分类号： G06K9/209 ,  G06K2209/40 ,  G06T7/593 ,  G06T7/85 ,  G06T2207/10012

摘要： The present disclosure is directed to a three-dimensional data registration method for vision measurement in flow style based on a double-sided target. An embodiment of the disclosed method that comprises A. Setting up two digital cameras which can observe the entire measured object; B. Calibrating intrinsic parameters and a transformation between the two digital camera coordinate frames; C. A double-sided target being placed near the measured area of the measured object, the two digital cameras and a vision sensor taking images of at least three non-collinear feature points of the double-sided target; D. Removing the target, measuring the measured area by using the vision sensor; E. Respectively computing the three dimensional coordinates of the feature points in the global coordinate frame and in the vision sensor coordinate frame; F. Estimating the transformation from the vision sensor coordinate frame to the global coordinate frame through the three dimensional coordinates of the three or more non-collinear feature points obtained at step E, then transforming the three dimensional data of the measured area to the global coordinate frame; and G. Repeating step C, D, E, F, then completing three dimensional data registration for all measured areas. The present disclosure improves three dimensional data registration precision and efficiency.

摘要翻译： 本公开涉及一种用于基于双面目标的流动式视觉测量的三维数据登记方法。 所公开的方法的实施例包括A.设置可以观察整个测量对象的两个数码相机; B.校准固有参数和两个数码相机坐标系之间的变换; C.一个双面目标放置在测量对象的测量区域附近，两个数字照相机和视觉传感器拍摄双面目标的至少三个非共线特征点的图像。 D.去除目标，使用视觉传感器测量测量面积; E.分别计算全局坐标系和视觉传感器坐标系中特征点的三维坐标; F.通过在步骤E获得的三个或多个非共线特征点的三维坐标来估计从视觉传感器坐标系到全局坐标系的变换，然后将测量区域的三维数据变换为全局坐标 帧; 和G.重复步骤C，D，E，F，然后完成所有测量区域的三维数据登记。 本公开改进了三维数据配准精度和效率。

公开(公告)号：US07768527B2

公开(公告)日：2010-08-03

申请号：US11561696

申请日：2006-11-20

申请人： Guangjun Zhang ,  Suqi Li ,  Zhenzhong Wei ,  Zhen Liu

发明人： Guangjun Zhang ,  Suqi Li ,  Zhenzhong Wei ,  Zhen Liu

IPC分类号： G09G5/00 ,  G03B21/26

CPC分类号： G01B11/2504 ,  G06T7/85 ,  G06T19/006 ,  G06T2207/10012

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20090059011A1

公开(公告)日：2009-03-05

申请号：US12022681

申请日：2008-01-30

申请人： Junhua Sun ,  Guangjun Zhang ,  Zhenzhong Wei

发明人： Junhua Sun ,  Guangjun Zhang ,  Zhenzhong Wei

IPC分类号： H04N17/00

CPC分类号： G01B11/2504

摘要： This disclosure provides a calibration method for structure parameters of a structured-light vision sensor, which includes setting up the coordinate frames of a camera, image plane and target for calibration. The calculation of coordinates in the camera coordinate frame of stripes, projected by structured-light, on the planar target and a structured-light equation fitting according to the coordinates in the camera coordinate frame of the stripes on the planar target, by moving the planar target arbitrarily multiple times. The calibration method of the structured-light vision sensor provided by the disclosure is easy to operate and no auxiliary apparatus is needed, which can not only promote the efficiency of the calibration of structured-light, but also extend the application scope of calibration of structured-light.

摘要翻译： 本公开提供了一种用于结构光视觉传感器的结构参数的校准方法，其包括设置相机，图像平面和用于校准的目标的坐标系。 通过平面目标上的结构光投影的条纹的相机坐标系中的坐标的计算和通过平面目标上的条纹的相机坐标系中的坐标拟合的结构光方程， 目标任意多次。 本发明提供的结构光视觉传感器的校准方法易于操作，不需要辅助设备，这不仅可以提高结构光的校准效率，而且可以扩展结构光校准的应用范围 -光。

公开(公告)号：US20080317283A1

公开(公告)日：2008-12-25

申请号：US11967772

申请日：2007-12-31

申请人： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

发明人： Guangjun Zhang ,  Jie Jiang ,  Qiaoyun Fan

IPC分类号： G01C9/06 ,  G01C11/04

CPC分类号： G01J1/42 ,  G01C21/02 ,  G01J1/04 ,  G01J1/0437 ,  G01J2001/4266 ,  G01S3/784 ,  G01S3/7862

摘要： 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.

摘要翻译： 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。