Systems and methods for correcting focal spot thermal drift
    1.
    发明授权
    Systems and methods for correcting focal spot thermal drift 有权
    用于校正焦点热漂移的系统和方法

    公开(公告)号:US06185275B2

    公开(公告)日:2001-02-06

    申请号:US09140111

    申请日:1998-08-25

    IPC分类号: H05G152

    CPC分类号: H05G1/52

    摘要: The present invention, in one form, is a system for correcting thermal drift in an imaging system. More specifically, a correction algorithm determines an adjusted focal spot position based upon a first temperature focal spot position and a second temperature focal spot position. The adjusted focal spot position is utilized in the reconstruction process to correct for focal spot movement resulting from thermal drift.

    摘要翻译: 本发明以一种形式是用于校正成像系统中的热漂移的系统。 更具体地,校正算法基于第一温度焦点位置和第二温度焦斑位置来确定调整焦点位置。 在重建过程中利用调整后的焦点位置来校正由热漂移引起的焦斑运动。

    Apparatus for altering the spatial characteristics of a digital image by
polynomial interpretation using sets of arithmetic processors
    2.
    发明授权
    Apparatus for altering the spatial characteristics of a digital image by polynomial interpretation using sets of arithmetic processors 失效
    用于通过使用一组算术处理器的多项式解释来改变数字图像的空间特性的装置

    公开(公告)号:US4611348A

    公开(公告)日:1986-09-09

    申请号:US675056

    申请日:1984-11-26

    CPC分类号: G06T3/4007 H04N1/3935

    摘要: A set of two processors operates on image pixel data using polynomial interpolation to generate pixel data for a spatially varied image. Image data is first stored in a buffer memory, and constants used in the polynomial interpolation are stored in a constants memory. One processor operates on the data from the buffer memory using constants from the constants memory, and the interpolated data is then stored in a display memory. The second processor controls the interpolation process by addressing the memories for the retrieval and storage of data.

    摘要翻译: 一组两个处理器使用多项式插值对图像像素数据进行操作,以生成空间变化图像的像素数据。 图像数据首先存储在缓冲存储器中,多项式插值中使用的常数存储在常量存储器中。 一个处理器使用来自常数存储器的常数对来自缓冲存储器的数据进行操作,然后将内插的数据存储在显示存储器中。 第二处理器通过寻址用于检索和存储数据的存储器来控制插值处理。

    Digital erase of raster lines
    3.
    发明授权
    Digital erase of raster lines 失效
    数字擦除光栅线

    公开(公告)号:US4360805A

    公开(公告)日:1982-11-23

    申请号:US192736

    申请日:1980-10-01

    CPC分类号: H04N3/30 H04N5/843

    摘要: The perception of raster lines on a television monitor is obscured by continuously and cyclically vertically shifting and presenting in successive frames the raster in successive upward positions and then in successive downward positions by incremental amounts, the total maximum vertical shift distance being less than the distance between original horizontal raster lines, thus giving the appearance of blending the information between original horizontal raster lines. Vertical raster deflection is accomplished by cyclically delaying the original, or normal, vertically sync pulses by amounts which incrementally increase to a maximum for producing a vertical frame rise less than the distance between original horizontal raster lines and decrementally decrease to no delay. A photographic camera capable of multiple frame exposure time is used to produce photographs of the video monitor without connections or operational dependence upon the television monitor system. An all-digital system provides increased reliability and repeatability as well as manufacturing and maintenance economies.

    摘要翻译: 在电视监视器上的光栅线的感知被连续地和周期性地垂直移位并且在相继的帧中呈现在相继的向上位置中的光栅并且然后在连续的向下位置中以递增的量呈现,使总的最大垂直移动距离小于 原始水平光栅线,从而使原始水平光栅线之间的信息混合的外观。 垂直光栅偏转是通过将原始或正常的垂直同步脉冲循环延迟的量来实现的,其量逐渐增加到最大值,以产生小于原始水平光栅线之间的距离并且减小到无延迟的垂直帧上升。 可以使用多帧曝光时间的照相机来产生视频监视器的照片,而无需连接或操作依赖于电视监视器系统。 全数字系统提供更高的可靠性和可重复性以及制造和维护经济。