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139 条记录 (耗时 0.034 秒)

    Light pen system for pixel-based displays
    4.
    发明授权
    Light pen system for pixel-based displays 有权
    用于基于像素的显示器的光笔系统

    公开(公告)号：US07421111B2

    公开(公告)日：2008-09-02

    申请号：US10704098

    申请日：2003-11-07

    申请人： Paul H. Dietz ,  Darren L. Leigh ,  Ramesh Raskar ,  Johnny Chung Lee

    发明人： Paul H. Dietz ,  Darren L. Leigh ,  Ramesh Raskar ,  Johnny Chung Lee

    IPC分类号： G06K9/00

    CPC分类号： G06F3/0321 ,  G06F3/03542

    摘要： An interactive display system includes a pixel-based display surface and a light pen. A sequence of patterns is projected onto the display surface. The sequence of patterns has a unique sequence of light intensities for each location of the display surface. Intensities of light at an arbitrary location are sensed by the light pen while projecting the sequence of patterns. The intensifies of light are decoded to determine coordinates of the arbitrary location.

    摘要翻译： 交互式显示系统包括基于像素的显示表面和光笔。 图案序列被投影到显示表面上。 图案的序列对于显示表面的每个位置具有唯一的光强度序列。 在任意位置处的光的强度由光笔感测，同时投影图案序列。 光的强化被解码以确定任意位置的坐标。

    Interactive wireless tag location and identification system
    6.
    发明授权
    Interactive wireless tag location and identification system 失效

    公开(公告)号：US07154395B2

    公开(公告)日：2006-12-26

    申请号：US10883235

    申请日：2004-07-01

    申请人： Ramesh Raskar ,  Paul A. Beardsley ,  Jeroen van Baar ,  Paul H. Dietz

    发明人： Ramesh Raskar ,  Paul A. Beardsley ,  Jeroen van Baar ,  Paul H. Dietz

    IPC分类号： G08B1/08

    CPC分类号： G06K19/0728 ,  G01S5/16 ,  G06K7/10079 ,  G06K19/0723

    摘要： A wireless location and identification system includes a controller and a tag. The controller has a projector configured to generate a unique temporal sequence of light intensities for each pixel in an output image of the projector and a wireless transceiver configured to emit an output signal and receive an input signal. The tag includes a photo-sensor configured to sense the unique temporal sequence of light intensities of a particular pixel, a transducer configured to receive the output signal from the transceiver, and a means for modulating, according to the unique temporal sequence of light intensities, the input signal for the transceiver in response to receiving the output signal and sensing the unique temporal sequence of light intensities of the particular pixel to indicate a location of the tag to the controller.

    Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces
    8.
    发明授权
    Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces 失效
    使用安装在表面的分立光学传感器将投影机校准为任意形状的表面的方法和系统

    公开(公告)号：US07001023B2

    公开(公告)日：2006-02-21

    申请号：US10635404

    申请日：2003-08-06

    申请人： Johnny Chung Lee ,  Daniel Maynes-Aminzade ,  Paul H. Dietz ,  Ramesh Raskar

    发明人： Johnny Chung Lee ,  Daniel Maynes-Aminzade ,  Paul H. Dietz ,  Ramesh Raskar

    IPC分类号： G03B21/00 ,  G03B21/14 ,  G03B21/26 ,  H04N3/22 ,  H04N3/23

    CPC分类号： H04N17/04 ,  H04N9/3185 ,  H04N9/3194

    摘要： A system determines correspondence between locations on a display surface and pixels in an output image of a projector. The display surface can have an arbitrary shape and pose. Locations of known coordinates are identified on the display surface. Each location is optically coupled to a photo sensor by an optical fiber installed in a throughhole in the surface. Known calibration patterns are projected, while sensing directly an intensity of light at each location for each calibration pattern. The intensities are used to determine correspondences between the locations and pixels in an output image of the projector so that projected images can be warped to conform to the display surface.

    摘要翻译： 系统确定显示表面上的位置与投影仪的输出图像中的像素之间的对应关系。 显示表面可以具有任意形状和姿势。 已知坐标的位置在显示面上被识别。 每个位置通过安装在表面上的通孔中的光纤光耦合到光传感器。 已知的校准图案被投影，同时直接感测每个校准图案的每个位置处的光强度。 强度用于确定投影仪的输出图像中的位置和像素之间的对应关系，使得投影图像可以翘曲以符合显示表面。

    Self-correcting rear projection television
    9.
    发明授权
    Self-correcting rear projection television 失效
    自校正背投电视

    公开(公告)号：US07227592B2

    公开(公告)日：2007-06-05

    申请号：US10672584

    申请日：2003-09-26

    申请人： Richard C. Waters ,  Jay E. Thornton ,  Ramesh Raskar ,  Mamoru Kato ,  Paul H. Dietz

    发明人： Richard C. Waters ,  Jay E. Thornton ,  Ramesh Raskar ,  Mamoru Kato ,  Paul H. Dietz

    IPC分类号： H04N9/28 ,  H04N3/23 ,  H04N9/31

    CPC分类号： H04N9/31 ,  H04N5/7408 ,  H04N9/28 ,  H04N17/04

    摘要： In a rear projection television, cathode ray tubes are mounted inside an enclosure so that each cathode ray tube projects output images onto a rear projection screen using a corresponding electron beam. Calibration images are generated for each cathode ray tube. A camera, also mounted inside the enclosure, acquires an input image of each calibration image. A distortion in each input image is measured, and the output images of the cathode ray tubes are corrected by adjusting the signals controlling the corresponding electron beams according to the distortion.

    摘要翻译： 在背投电视中，阴极射线管安装在外壳内，使得每个阴极射线管使用相应的电子束将输出图像投影到背投屏幕上。 为每个阴极射线管生成校准图像。 也安装在机箱内的相机获取每个校准图像的输入图像。 测量每个输入图像中的失真，并且通过根据失真调整控制相应电子束的信号来校正阴极射线管的输出图像。