Tracking objects in bowl-shaped imaging systems

    公开(公告)号:US10262394B2

    公开(公告)日:2019-04-16

    申请号:US15257308

    申请日:2016-09-06

    Abstract: Technologies for determining a distance of an object from a vehicle include a computing device to identify an object captured in a fisheye image generated by a fisheye camera of the vehicle. The computing device projects a contour of the identified object on a selected virtual plane that is located outside the vehicle and selected from a predefined set of virtual planes based on a location of the identified object relative to the vehicle. The computing device identifies a bottom of the projected contour on the selected virtual plane and determines an intersection point of an imaginary line with a ground plane coincident with a plane on which the vehicle is positioned. The imaginary line passes through each of the identified bottom of the projected contour and the fisheye camera. The computing device determines a location of the identified object relative to the vehicle based on the determined intersection point and the identified bottom of the projected contour.

    Bowl-shaped imaging system
    22.
    发明授权

    公开(公告)号:US10210597B2

    公开(公告)日:2019-02-19

    申请号:US14367987

    申请日:2013-12-19

    Abstract: A method for flexibly sintering rare earth permanent magnetic alloy comprises: (1) weighing fine powder of rare earth permanent magnetic alloy, loading the fine powder in molds, and orientedly compacting the fine powder in a press machine and in inert atmosphere to obtain blanks and loading the blanks into charging boxes; (2) after air between the second conveying vehicle and the first isolating valve of the glove box is replaced with inert gas, opening the two isolating valves connected with each other; wherein after a first rolling wheel transmission in the second conveying vehicle transfers the charging tray into the first chamber of the glove box, the two isolating valves are closed, and the second conveying vehicle leaves; (3) after a first conveying vehicle is coupled with a third isolating valve at an end of the second chamber, locking two matching flanges of the two isolating valves tightly; (4) after the first conveying vehicle is coupled with an isolating valve of a sintering furnace, locking matching flanges tightly; and (5) after the sintering furnace is evacuated to a vacuum degree more than 50 Pa, or the sintering furnace is filled with protective gas, processing the blanks with heating and heat preservation according to a preset process curve; wherein the blanks are sintered at a highest temperature of 1200° C. The present invention significantly increases performance of magnets.

    Machine vision image sensor calibration
    25.
    发明授权
    Machine vision image sensor calibration 有权
    机器视觉图像传感器校准

    公开(公告)号:US09582881B2

    公开(公告)日:2017-02-28

    申请号:US14662026

    申请日:2015-03-18

    Inventor: Koba Natroshvili

    Abstract: A system, apparatus, method, and computer readable media for calibration of one or more extrinsic image sensor parameters. A system may calibrate a multi-camera surround view system, for example as may be employed in a vehicle, based on image data comprising one or more ground plane landmarks. The system may determine a ground plane projection of the image data, for example through a Radon transformation. A signal associated with at least one of the one or more ground plane landmarks in the ground plane projection(s) may be determined, for example through application of the projection-slice theorem. The landmark signal may be utilized as a response in an automated calibration loop to optimize one or more extrinsic parameter values associated with the sensors.

    Abstract translation: 一种用于校准一个或多个非本征图像传感器参数的系统,装置,方法和计算机可读介质。 基于包括一个或多个地平面界标的图像数据,系统可以校准例如可能在车辆中使用的多摄像机环绕视图系统。 系统可以确定图像数据的接地平面投影,例如通过Radon变换。 可以例如通过应用投影切片定理来确定与接地平面投影中的一个或多个接地平面界标中的至少一个相关联的信号。 里程碑信号可以用作自动校准环路中的响应,以优化与传感器相关联的一个或多个外在参数值。

Patent Agency Ranking