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    Photometric and radiometric calibration using optical feedback
    43.
    发明授权
    Photometric and radiometric calibration using optical feedback 有权
    使用光学反馈的光度和辐射校准

    公开(公告)号：US09324146B2

    公开(公告)日：2016-04-26

    申请号：US14741036

    申请日：2015-06-16

    申请人： Northwestern University

    发明人： Paul J. Olczak ,  John E. Tumblin

    IPC分类号： H04N17/00 ,  G06T7/00 ,  G01J1/42 ,  G01J1/02

    CPC分类号： G06T7/0018 ,  G01J1/0295 ,  G01J1/4214 ,  G06T2207/10016 ,  G06T2207/10144 ,  H04N17/002

    摘要： Certain examples provide photometric or radiometric calibration using optical feedback. A disclosed example includes dithering between a first display pixel value and a second display pixel value to create a light source from a display. The disclosed example includes capturing the light source using a camera via a plurality of photographs taken by the camera. Each photograph includes a plurality of camera pixels. The disclosed example includes determining a camera response by measuring plurality of camera quantization levels associated with the plurality of camera pixels based on the first display pixel value and the second display pixel value. The disclosed example also includes determining a display response based on the plurality of camera quantization levels. The display response includes a plurality of luminance output values of the display.

    摘要翻译： 某些示例使用光学反馈提供光度或辐射校准。 所公开的示例包括在第一显示像素值和第二显示像素值之间的抖动以从显示器创建光源。 所公开的示例包括通过照相机拍摄的多张照片使用相机拍摄光源。 每张照片包括多个照相机像素。 所公开的示例包括基于第一显示像素值和第二显示像素值来测量与多个相机像素相关联的多个相机量化级别来确定相机响应。 所公开的示例还包括基于多个相机量化级别来确定显示响应。 显示响应包括显示器的多个亮度输出值。

    Light amount measuring apparatus and light amount measuring method
    46.
    发明申请
    Light amount measuring apparatus and light amount measuring method 审中-公开
    光量测量装置和光量测量方法

    公开(公告)号：US20070070345A1

    公开(公告)日：2007-03-29

    申请号：US11527560

    申请日：2006-09-27

    申请人： Muneki Araragi ,  Takeo Tanaami

    发明人： Muneki Araragi ,  Takeo Tanaami

    IPC分类号： G01J3/30 ,  G01N21/64

    CPC分类号： G01N21/6428 ,  G01J1/08 ,  G01J1/4214 ,  G01N21/274 ,  G01N21/6452 ,  G01N2021/6419 ,  G01N2021/6421 ,  G01N2021/6441

    摘要： A zero point adjustment is performed by generating no signal state of a CCD camera. A state in which stray light does not enter the CCD camera is ensured by a calibration shutter. An output signal of the CCD camera is transmitted to a light amount calculator, and a calibrating section executes a calibration for the light amount calculator by using an output signal value as a reference (zero point). Further, light outputted from a laser light source is attenuated by an optical attenuator and is made to be incident on the CCD camera. By switching an attenuating amount of the optical attenuator, correctly set light is made to be incident on the CCD camera. The output signal of the CCD camera is transmitted to the light amount calculator, and the calibrating section executes the calibration such that values of the respective output signals correctly correspond to respective light amounts.

    摘要翻译： 通过不产生CCD相机的信号状态来进行零点调整。 通过校准快门确保杂散光不进入CCD照相机的状态。 CCD摄像机的输出信号被发送到光量计算器，并且校准部通过使用输出信号值作为基准（零点）来执行光量计算器的校准。 此外，从激光源输出的光被光衰减器衰减，并入射到CCD照相机上。 通过切换光衰减器的衰减量，将正确设置的光线入射到CCD相机上。 CCD摄像机的输出信号被发送到光量计算器，并且校准部分执行校准，使得各个输出信号的值正确对应于各个光量。

    Light arrangement for vision systems
    47.
    发明申请
    Light arrangement for vision systems 失效
    视觉系统的光线安排

    公开(公告)号：US20040232310A1

    公开(公告)日：2004-11-25

    申请号：US10618827

    申请日：2003-07-14

    发明人： Keith Emery ,  Georg G. Justice

    IPC分类号： G01J001/32

    CPC分类号： G01J1/4204 ,  G01J1/4214

    摘要： A lighting arrangement for use in vision systems and imaging applications. The arrangement illuminates the object to be imaged with a supplied light of a specified illumination. The intensity, hue, and directionality of the supplied light can be varied. The desired illumination is specified either by manually operable controls or via a programming interface. The arrangement has a light source which includes light-emitting diodes mounted in a housing. The source provides a constant light output over a long lifetime. A light sensor senses the total illumination on the object being imaged resulting from ambient light in addition to the supplied light, and a negative feedback circuit in the arrangement can adjust the level of the supplied light in response so as to maintain a constant total illumination on the object despite variations in the ambient lighting.

    摘要翻译： 用于视觉系统和成像应用的照明装置。 该装置用指定照明的所提供的光照亮要成像的物体。 所提供的光的强度，色调和方向性可以变化。 所需的照明通过手动操作的控制或通过编程接口来指定。 该装置具有包括安装在壳体中的发光二极管的光源。 源在长寿命期间提供恒定的光输出。 除了所提供的光之外，光传感器还感测由环境光产生的成像物体上的总照度，并且该配置中的负反馈电路可以响应地调节所提供的光的电平，以保持恒定的总照明 该物体尽管环境照明有变化。

    Exposure meter used for photographing
    48.
    发明授权
    Exposure meter used for photographing 有权
    用于拍摄的曝光仪

    公开(公告)号：US06721044B2

    公开(公告)日：2004-04-13

    申请号：US10050177

    申请日：2002-01-18

    申请人： Yasushi Fukazawa ,  Masaharu Kashima ,  Ikuo Bunya ,  Tetsuo Hotta

    发明人： Yasushi Fukazawa ,  Masaharu Kashima ,  Ikuo Bunya ,  Tetsuo Hotta

    IPC分类号： G01J142

    CPC分类号： G01J1/4214

    摘要： An exposure meter for incident- and reflected-light photometry includes an incident-light receiving section, a finder for reflected-light photometry, an arithmetical element for calculating various exposure values on the basis of photometric results obtained by incident- and reflected-light receiving elements, a finder optical system for displaying information on the exposure values obtained by the arithmetical element in the finder, and a display window provided on an exposure meter body. The incident-light receiving section is constructed so that it is can be mounted to or dismounted from the exposure meter body and allows incident-light photometry and lighting setting photometry. The exposure meter further includes a transmitting unit, mountable in or dismountable from the exposure meter body, in which flashlight is emitted and the amount of flashlight can be adjusted in accordance with the information on the exposure values displayed on the display window.

    摘要翻译： 用于入射和反射光测光的曝光仪包括入射光接收部分，用于反射光测光的取景器，用于根据通过入射和反射光接收获得的测光结果计算各种曝光值的算术元件 元件，用于显示由取景器中的算术元件获得的曝光值的信息的取景器光学系统，以及设置在曝光计主体上的显示窗口。 入射光接收部被构造成能够安装到曝光计主体上或从曝光表主体上拆下，并允许入射光测光和照明设置测光。 曝光表还包括安装在曝光计主体中或可拆卸的发射单元，其中发射手电筒，并且可以根据显示在显示窗口上的曝光值的信息来调节手电筒的量。

    Light arrangement for vision systems
    49.
    发明授权
    Light arrangement for vision systems 有权
    视觉系统的光线安排

    公开(公告)号：US06617559B1

    公开(公告)日：2003-09-09

    申请号：US09482826

    申请日：2000-01-13

    申请人： Keith Emery ,  George G Justice

    发明人： Keith Emery ,  George G Justice

    IPC分类号： G01J132

    CPC分类号： G01J1/4204 ,  G01J1/4214

    摘要： A lighting arrangement for use in vision systems and imaging applications. The arrangement illuminates the object to be imaged with a supplied light of a specified illumination. The intensity, hue, and directionality of the supplied light can be varied. The desired illumination is specified either by manually operable controls or via a programming interface. The arrangement has a light source which includes light-emitting diodes mounted in a housing. The source provides a constant light output over a long lifetime. A light sensor senses the total illumination on the object being imaged resulting from ambient light in addition to the supplied light, and a negative feedback circuit in the arrangement can adjust the level of the supplied light in response so as to maintain a constant total illumination on the object despite variations in the ambient lighting.

    摘要翻译： 用于视觉系统和成像应用的照明装置。 该装置用指定照明的所提供的光照亮要成像的物体。 所提供的光的强度，色调和方向性可以变化。 所需的照明通过手动操作的控制或通过编程接口来指定。 该装置具有包括安装在壳体中的发光二极管的光源。 源在长寿命期间提供恒定的光输出。 除了所提供的光之外，光传感器还感测由环境光产生的成像物体上的总照度，并且该配置中的负反馈电路可以响应地调节所提供的光的电平，以保持恒定的总照明 该物体尽管环境照明有变化。

    Image sensing element, image sensing apparatus, and information processing apparatus
    50.
    发明申请
    Image sensing element, image sensing apparatus, and information processing apparatus 失效
    图像感测元件，图像感测装置和信息处理装置

    公开(公告)号：US20020125409A1

    公开(公告)日：2002-09-12

    申请号：US10083996

    申请日：2002-02-25

    发明人： Akihiko Nagano

    IPC分类号： H01L027/00

    CPC分类号： H01L27/14603 ,  G01J1/4214 ,  H01L27/14609 ,  H01L27/14627 ,  H01L27/14643 ,  H04N5/23212 ,  H04N5/3696 ,  H04N5/37457

    摘要： This invention realizes high-precision exposure regardless of the F-number of an image sensing lens in photography. One pixel includes a first light-receiving region (119c) which includes a region where the principal ray of an image sensing lens is incident, and second light-receiving regions (119a, 119b) which do not include the region where the principal ray of the image sensing lens is incident. The first light-receiving region (119c) is sandwiched between the two second light-receiving regions (119a, 119b).

    摘要翻译： 无论摄影中的摄像镜头的F数多少，本发明实现高精度曝光。 一个像素包括第一光接收区域（119c），其包括摄像透镜的主光线入射的区域和不包括摄像透镜的主光线的区域的第二光接收区域（119a，119b） 摄像镜头入射。 第一光接收区域（119c）夹在两个第二光接收区域（119a，119b）之间。