Thresholding of gray level images using fractal dimensions
    12.
    发明授权
    Thresholding of gray level images using fractal dimensions 失效
    使用分形尺寸对灰度级图像进行阈值分析

    公开(公告)号:US5054101A

    公开(公告)日:1991-10-01

    申请号:US316716

    申请日:1989-02-28

    申请人: Arun Prakash

    发明人: Arun Prakash

    IPC分类号: G06T1/00 G06K9/38

    CPC分类号: G06K9/38

    摘要: The locality of a two dimensional gray level image from which is generated a reference threshold value for converting the image to its corresponding binary image is determined by finding the fractal dimension of a hypothetical three dimensional surface overlying the two dimensional image.

    摘要翻译: 通过找到覆盖二维图像的假想三维表面的分形维数来确定生成用于将图像转换成其对应二进制图像的参考阈值的二维灰度图像的位置。

    Method for color measurement
    13.
    发明授权
    Method for color measurement 失效
    颜色测量方法

    公开(公告)号:US08441641B1

    公开(公告)日:2013-05-14

    申请号:US13091389

    申请日:2011-04-21

    IPC分类号: G01J3/46

    摘要: The present disclosure is directed to a method for producing color spectral data of an article illuminated with lights emitted from one or more light emitting units, such as light emitting diodes (LEDs). The method is useful for obtaining accurate color spectral data of the article and for matching the color data produced from another color measuring instrument. The method is particularly useful for obtaining color spectral data using light emitting diodes as light source for color measurement. This disclosure is also directed to a color measuring system using the method disclosed therein.

    摘要翻译: 本公开涉及一种用于产生由一个或多个发光单元(诸如发光二极管(LED))发射的光照射的物品的色谱数据的方法。 该方法对于获得物品的准确色谱数据和用于匹配由另一种颜色测量仪产生的颜色数据是有用的。 该方法对于使用发光二极管作为用于颜色测量的光源来获得颜色光谱数据特别有用。 本公开还涉及使用其中公开的方法的颜色测量系统。

    Transient cancellation technique for spacecraft solar wing stepping
    14.
    发明申请
    Transient cancellation technique for spacecraft solar wing stepping 有权
    航天器太阳翼踏步瞬态消除技术

    公开(公告)号:US20050113986A1

    公开(公告)日:2005-05-26

    申请号:US10722756

    申请日:2003-11-26

    IPC分类号: B64G1/38 B64G1/44 G06F7/00

    CPC分类号: B64G1/443 B64G1/38

    摘要: A method and apparatus for controlling a plurality of solar panels of a spacecraft is described. The method comprises the steps of providing a first step command to a first solar panel, and providing a second step command to a second solar panel at a time of a transient zero-crossing of a dynamic response of the spacecraft body to the first step command, wherein the second solar panel is disposed on an opposite side of the spacecraft from the first solar panel. The apparatus comprises a processor, a first solar panel driver, communicatively coupled to the processor, for providing a first step command to a first solar panel, and a second solar panel driver, communicatively coupled to the processor, for providing a second step command to a second solar panel at a time of a transient zero-crossing of a dynamic response of the spacecraft body to the first step command.

    摘要翻译: 描述了一种用于控制航天器多个太阳能电池板的方法和装置。 该方法包括以下步骤:向第一太阳能电池板提供第一步骤命令,并且在航天器本体的动态响应与第一步骤命令的瞬时过零点时向第二太阳能电池板提供第二步骤命令 ,其中所述第二太阳能电池板设置在所述航天器与所述第一太阳能电池板相反的一侧。 该装置包括处理器,第一太阳能电池板驱动器,通信地耦合到处理器,用于向第一太阳能电池板提供第一步骤命令,以及通信地耦合到处理器的第二太阳能电池板驱动器,用于提供第二步骤命令 在宇宙飞船身体的动态响应与第一步骤命令的瞬时零交叉时的第二太阳能电池板。

    Transient cancellation technique for spacecraft solar wing stepping
    15.
    发明授权
    Transient cancellation technique for spacecraft solar wing stepping 有权
    航天器太阳翼踏步瞬态消除技术

    公开(公告)号:US07343228B2

    公开(公告)日:2008-03-11

    申请号:US10722756

    申请日:2003-11-26

    CPC分类号: B64G1/443 B64G1/38

    摘要: A method and apparatus for controlling a plurality of solar panels of a spacecraft is described. The method comprises the steps of providing a first step command to a first solar panel, and providing a second step command to a second solar panel at a time of a transient zero-crossing of a dynamic response of the spacecraft body to the first step command, wherein the second solar panel is disposed on an opposite side of the spacecraft from the first solar panel. The apparatus comprises a processor; a first solar panel driver, communicatively coupled to the processor, for providing a first step command to a first solar panel, and a second solar panel driver, communicatively coupled to the processor, for providing a second step command to a second solar panel at a time of a transient zero-crossing of a dynamic response of the spacecraft body to the first step command.

    摘要翻译: 描述了一种用于控制航天器多个太阳能电池板的方法和装置。 该方法包括以下步骤:向第一太阳能电池板提供第一步骤命令,并且在航天器本体的动态响应与第一步骤命令的瞬时过零点时向第二太阳能电池板提供第二步骤命令 ,其中所述第二太阳能电池板设置在所述航天器与所述第一太阳能电池板相反的一侧。 该装置包括处理器; 第一太阳能电池板驱动器,通信地耦合到处理器,用于向第一太阳能电池板提供第一步骤命令,以及通信地耦合到处理器的第二太阳能电池板驱动器,用于在第二太阳能电池板的第二太阳能电池板上提供第二步骤命令 航天器身体的动态响应与第一步骤命令的瞬时过零点的时间。