System and method for tracking a laser spot on a projected computer screen image
    1.
    发明授权
    System and method for tracking a laser spot on a projected computer screen image 有权
    用于跟踪投影计算机屏幕图像上的激光点的系统和方法

    公开(公告)号:US07872637B2

    公开(公告)日:2011-01-18

    申请号:US11740251

    申请日:2007-04-25

    IPC分类号: G09G5/08

    CPC分类号: G06F3/0346 G06F3/0386

    摘要: A system and method for tracking a laser spot on a projected computer screen image computes a projective transformation matrix using the projected computer screen image electronically captured in a frame of image data. The projective transformation matrix is computed by fitting a polygon to a contour of each graphical object in the frame of image data and determining whether the polygon for each graphical object satisfies a set of predefined parameters to find a candidate polygon that corresponds to an outline of the projected computer screen image in the frame of image data.

    摘要翻译: 用于在投影计算机屏幕图像上跟踪激光点的系统和方法使用电子捕获在图像数据帧中的投影计算机屏幕图像来计算投影变换矩阵。 通过将多边形拟合到图像数据的帧中的每个图形对象的轮廓来计算投影变换矩阵,并且确定每个图形对象的多边形是否满足一组预定义参数,以找到与该图形对象的轮廓对应的候选多边形 投影计算机屏幕图像在图像数据帧中。

    SYSTEM AND METHOD FOR TRACKING A LASER SPOT ON A PROJECTED COMPUTER SCREEN IMAGE
    2.
    发明申请
    SYSTEM AND METHOD FOR TRACKING A LASER SPOT ON A PROJECTED COMPUTER SCREEN IMAGE 有权
    用于跟踪投影计算机屏幕图像上的激光点的系统和方法

    公开(公告)号:US20080266253A1

    公开(公告)日:2008-10-30

    申请号:US11740251

    申请日:2007-04-25

    IPC分类号: G06F3/033

    CPC分类号: G06F3/0346 G06F3/0386

    摘要: A system and method for tracking a laser spot on a projected computer screen image computes a projective transformation matrix using the projected computer screen image electronically captured in a frame of image data. The projective transformation matrix is computed by fitting a polygon to a contour of each graphical object in the frame of image data and determining whether the polygon for each graphical object satisfies a set of predefined parameters to find a candidate polygon that corresponds to an outline of the projected computer screen image in the frame of image data.

    摘要翻译: 用于在投影计算机屏幕图像上跟踪激光点的系统和方法使用电子捕获在图像数据帧中的投影计算机屏幕图像来计算投影变换矩阵。 通过将多边形拟合到图像数据的帧中的每个图形对象的轮廓来计算投影变换矩阵,并且确定每个图形对象的多边形是否满足一组预定义参数,以找到与该图形对象的轮廓对应的候选多边形 投影计算机屏幕图像在图像数据帧中。

    Optical navigation in relation to transparent objects
    3.
    发明申请
    Optical navigation in relation to transparent objects 审中-公开
    光学导航与透明物体有关

    公开(公告)号:US20070242277A1

    公开(公告)日:2007-10-18

    申请号:US11403720

    申请日:2006-04-13

    IPC分类号: G01B11/02

    CPC分类号: G06F3/0317 G06F3/03543

    摘要: An optical navigation system includes an illumination system, an image sensor, and a processing system. The illumination system directs a beam of output light toward an object so that a first portion of the output light beam reflects off the object front surface to form a first reflected light beam and a second portion of the output light beam reflects off the object back surface to form a second reflected light beam, where the first and second reflected light beams overlap in a region of space to produce an interference pattern. The image sensor captures images of the interference pattern. The processing system produces motion signals indicative of movement of the image sensor in relation to the object from comparisons of ones of the images captured by the image sensor.

    摘要翻译: 光学导航系统包括照明系统,图像传感器和处理系统。 照明系统将输出光束朝向物体引导,使得输出光束的第一部分从物体前表面反射以形成第一反射光束,并且输出光束的第二部分反射离开物体背面 以形成第二反射光束,其中第一和第二反射光束在空间区域中重叠以产生干涉图案。 图像传感器捕获干涉图案的图像。 处理系统产生指示图像传感器相对于物体的运动的运动信号,与图像传感器捕获的图像的比较进行比较。

    Method and system for detecting relative motion using one or more motion sensors
    4.
    发明申请
    Method and system for detecting relative motion using one or more motion sensors 审中-公开
    使用一个或多个运动传感器检测相对运动的方法和系统

    公开(公告)号:US20070103550A1

    公开(公告)日:2007-05-10

    申请号:US11270345

    申请日:2005-11-09

    IPC分类号: H04N7/18

    摘要: One or more optical motion sensors are connected to a central processing device. At least one of the motion sensors captures representations of a region, such as images or patterns that represent the region. Each optical motion sensor processes its representations to generate resulting data that are used to detect whether an object moved in relation to a respective motion sensor. Any relative motion may be detected by each optical motion sensor or by the central processing device using resulting data received from the optical motion sensor or sensors.

    摘要翻译: 一个或多个光学运动传感器连接到中央处理装置。 至少一个运动传感器捕获区域的表示,例如表示该区域的图像或图案。 每个光学运动传感器处理其表示以产生用于检测物体是否相对于相应运动传感器移动的结果数据。 任何相对运动可由每个光学运动传感器或中央处理装置使用从光学运动传感器或传感器接收的结果数据来检测。