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    • 2. 发明授权
    • Trigger for blade imaging based on a controller
    • 基于控制器的刀片成像触发器
    • US09462183B2
    • 2016-10-04
    • US13531658
    • 2012-06-25
    • Binglong XieYakup GencFrank Dierkes
    • Binglong XieYakup GencFrank Dierkes
    • H04N5/232F01D21/00G01N21/88G01N21/954
    • H04N5/23222F01D21/003F05D2230/72G01N21/8806G01N21/8851G01N21/954G01N2021/8838
    • A rotating rotor in a turbine has blades attached. At least one blade is a reference blade of which a reference position is determined by a Once-Per-Rotation sensor. A camera positioned at a viewing port takes a sequence of images of all the blades during a rotation at a trigger moment determined by a controller. The controller receives a signal indicating that the reference blade passes its reference point. The controller is provided with data about the number of blades, the position of the camera and a desired dwell of an image related to the blade. The controller calculates the trigger moments and generates trigger signals to the camera. The trigger moment is adjusted for changing rotor speed by extracting a blade feature from blade images. The camera records images that are labeled and stored as image data on a storage device.
    • 涡轮机中的旋转转子具有附接的叶片。 至少一个叶片是参考叶片,其参考位置由每转一次传感器确定。 位于观察端口处的摄像机在由控制器确定的触发时刻的旋转期间拍摄所有叶片的一系列图像。 控制器接收到指示参考刀片通过其参考点的信号。 控制器提供关于刀片数量,相机的位置和与刀片相关的图像的期望驻留的数据。 控制器计算触发力矩并产生相机的触发信号。 通过从刀片图像中提取刀片特征来调整触发时刻以改变转子速度。 照相机将已标记和存储为图像数据的图像记录在存储设备上。
    • 8. 发明授权
    • Input devices for augmented reality applications
    • 增强现实应用的输入设备
    • US07215322B2
    • 2007-05-08
    • US10153520
    • 2002-05-22
    • Yakup GencNassir Navab
    • Yakup GencNassir Navab
    • G09G5/00
    • G06F3/011
    • A new interaction/input device for an augmented reality system is provided. In an augmented reality system using infrared video-based tracking, the interaction/input device is employed by placing markers, e.g., small disks, at a predetermined location in a scene viewed by a user which are augmented to simulate physical buttons. These augmented markers, as viewed through the augmented reality system, can then be physically manipulated by the user. The user will put their fingers on one of these markers, and in turn, the infrared video-based tracker will recognize this action and process it accordingly. The augmented reality system can also augment simulated menus in the user's view giving the user the necessary feedback for interaction. By exploiting conventional tracking technology, the interaction/input device can be implemented with minimal additional hardware and minimal additional processing required by the augmented reality system.
    • 提供了一种用于增强现实系统的新的交互/输入设备。 在使用基于红外视频的跟踪的增强现实系统中,通过将标记(例如小盘)放置在由用户观看的场景中的预定位置处,以增强以模拟物理按钮,采用交互/输入设备。 然后,通过增强现实系统观察到的这些增强标记可以由用户物理地操纵。 用户将手指放在其中一个标记上,反过来,基于红外视频的跟踪器将会识别该动作并相应地进行处理。 增强现实系统还可以增加用户视图中的模拟菜单,给予用户交互的必要反馈。 通过利用传统的跟踪技术,交互/输入设备可以用最小的附加硬件和增强现实系统所需的最小额外处理来实现。
    • 9. 发明申请
    • System and method for camera tracking and pose estimation
    • 摄像机跟踪和姿态估计的系统和方法
    • US20060188131A1
    • 2006-08-24
    • US11359673
    • 2006-02-22
    • Xiang ZhangYakup GencVisvanathan RameshYanghai Tsin
    • Xiang ZhangYakup GencVisvanathan RameshYanghai Tsin
    • G06K9/00
    • G06T7/246G06T7/74
    • A method of tracking a pose of a moving camera includes receiving a first image from a camera, receiving a sequence of digitized images from said camera, recording, for each of said sequence of digitized images, the pose and 2D correspondences of landmarks, reconstructing a location and appearance of a 2-dimensional texture patch from 2D correspondences of the landmarks by triangulation and optimization, computing back-projection errors by comparing said reconstructed texture patch with said first received image; and reconstructing said location and appearance of said 2-dimensional texture patch from the 2D correspondences of the landmarks of said sequence of digitized images by triangulation and optimization after eliminating those landmarks with large back-projection errors.
    • 跟踪移动摄像机的姿态的方法包括:从相机接收第一图像,从所述照相机接收数字化图像序列,针对所述数字化图像序列中的每一个记录地标的姿态和2D对应,重建 通过三角测量和优化从地标的2D对应的二维纹理贴片的位置和外观,通过将所述重建纹理贴片与所述第一接收图像进行比较来计算反投影误差; 以及通过三角测量和优化,从所述数字化图像序列的地标的二维对应中重建所述二维纹理补片的所述位置和外观,并且消除了具有大的反投影误差的这些地标。