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    • 1. 发明申请
    • Method to control point spread function of an image
    • 控制图像点扩散功能的方法
    • US20060103951A1
    • 2006-05-18
    • US10508726
    • 2003-03-17
    • Gareth BellGabriel EngelMark SearleDaniel Evanicky
    • Gareth BellGabriel EngelMark SearleDaniel Evanicky
    • G02B3/00
    • G02B27/46G02F1/133504
    • A method of controlling the point spread function of an image projected with said image being diffused by a filter; said point spread function is a result of the application of spatial filter(s) on said image; with said control of the point spread function effected by varying the distance between such image and said spatial filter(s) and varying the bidirectional scattering transmission function of the spatial filter(s). Said spatial filter may be a holographic diffuser, which by method of manufacture has a ell defined bi-directional scattering transmission spread function. Control of said spread function is particularly useful to maintain image quality while abating moiré interference in situations where two periodic patterns are layered causing moiré interference.
    • 一种控制由所述图像投影的图像的点扩散函数被滤波器扩散的方法; 所述点扩散函数是在所述图像上应用空间滤波器的结果; 通过改变这种图像和所述空间滤波器之间的距离并改变空间滤波器的双向散射传递函数来实现点扩散函数的所述控制。 所述空间滤波器可以是全息漫射器,其通过制造方法具有椭圆定义的双向散射透射扩展功能。 所述扩展函数的控制对于保持图像质量而特别有用,同时在两层周期性图案分层导致莫尔干扰的情况下消除莫尔干扰。
    • 5. 发明授权
    • Interactive input system and method
    • 交互式输入系统和方法
    • US09298318B2
    • 2016-03-29
    • US13309377
    • 2011-12-01
    • Gerald MorrisonJohn NewtonGareth Bell
    • Gerald MorrisonJohn NewtonGareth Bell
    • G06F3/033G06F3/042
    • G06F3/0425G06F3/0421
    • An interactive input system comprises a display panel; a first illumination source providing illumination across an outer surface of the display panel such that when a pointer is brought into proximity with the outer surface, the pointer reflects illumination from the first illumination source through the display panel; at least one imaging device having a field of view aimed at an opposite outer surface of the display panel, the at least one imaging device capturing images including illumination reflected by the pointer through the display panel; and processing structure in communication with the at least one imaging device, said processing structure processing the captured images to determine a location of the pointer relative to the outer surface.
    • 交互式输入系统包括显示面板; 第一照明源,提供穿过所述显示面板的外表面的照明,使得当指示器与所述外表面接近时,所述指示器通过所述显示面板反射来自所述第一照明源的照明; 所述至少一个成像装置具有针对所述显示面板的相对外表面的视场,所述至少一个成像装置捕获包括由所述指针通过所述显示面板反射的光的图像; 以及与所述至少一个成像装置通信的处理结构,所述处理结构处理所捕获的图像以确定所述指针相对于所述外表面的位置。
    • 6. 发明申请
    • INTERACTIVE INPUT SYSTEM AND METHOD
    • 互动输入系统和方法
    • US20120139835A1
    • 2012-06-07
    • US13309377
    • 2011-12-01
    • Gerald MorrisonJohn NewtonGareth Bell
    • Gerald MorrisonJohn NewtonGareth Bell
    • G06F3/033
    • G06F3/0425G06F3/0421
    • An interactive input system comprises a display panel; a first illumination source providing illumination across an outer surface of the display panel such that when a pointer is brought into proximity with the outer surface, the pointer reflects illumination from the first illumination source through the display panel; at least one imaging device having a field of view aimed at an opposite outer surface of the display panel, the at least one imaging device capturing images including illumination reflected by the pointer through the display panel; and processing structure in communication with the at least one imaging device, said processing structure processing the captured images to determine a location of the pointer relative to the outer surface.
    • 交互式输入系统包括显示面板; 第一照明源,提供穿过所述显示面板的外表面的照明,使得当指示器与所述外表面接近时,所述指示器通过所述显示面板反射来自所述第一照明源的照明; 所述至少一个成像装置具有针对所述显示面板的相对外表面的视场,所述至少一个成像装置捕获包括由所述指针通过所述显示面板反射的光的图像; 以及与所述至少一个成像装置通信的处理结构,所述处理结构处理所捕获的图像以确定所述指针相对于所述外表面的位置。