Method for and apparatus for determining an optimum gradation parameter
for developing aerial photographs
    1.
    发明授权
    Method for and apparatus for determining an optimum gradation parameter for developing aerial photographs 失效
    用于确定用于开发航空照片的最佳灰度参数的方法和装置

    公开(公告)号:US4603960A

    公开(公告)日:1986-08-05

    申请号:US666398

    申请日:1984-10-30

    IPC分类号: G01C11/02 G03B7/08 G03B39/00

    CPC分类号: G01C11/02

    摘要: A method and apparatus for determining an optimum development parameter, particularly for use in developing aerial photographs, in which the entire brightness of terrain objects to be imaged is converted into corresponding density values which are used in developing an aerial photograph. The method comprises the steps of detecting a terrain brightness by means of a photodetector array, processing the obtained measuring values in selecting maximum and minimum values, subjecting the latter values to a smoothing operation and determining a relevant gradation value. The gradation value is displayed and/or stored and used in the development of the exposed film material, taking into consideration the respective parameters.

    摘要翻译: 一种用于确定最佳显影参数的方法和装置,特别是用于开发航空照片,其中要成像的地形物体的整个亮度被转换成用于开发航空照片的相应的密度值。 该方法包括以下步骤:通过光电检测器阵列检测地形亮度,处理所获得的测量值以选择最大值和最小值,对后面的值进行平滑处理并确定相关灰度值。 考虑到各个参数,显影和/或存储和/或存储和使用曝光的胶片材料的显影。

    Method for a non-retarded shutter release of rotary shutters in
photogrammetric aerial cameras
    2.
    发明授权
    Method for a non-retarded shutter release of rotary shutters in photogrammetric aerial cameras 失效
    摄影测量航空摄像机中旋转百叶窗的非延迟快门释放方法

    公开(公告)号:US4616911A

    公开(公告)日:1986-10-14

    申请号:US738313

    申请日:1985-05-28

    IPC分类号: G01C11/02 G03B9/10 G03B29/00

    CPC分类号: G01C11/02 G03B9/10

    摘要: The invention relates to a method for a non-retarded shutter release of a rotary sector shutter, particularly for use in photogrammetrical aerial cameras comprising a computer means which via a control means for rotating the rotary sectors of the shutter sets the latter to a rate of rotations in a manner that the time of photograph sequence is a multiple integer of the time interval between two feasible open times of the shutter. Probable incorrect exposures are eliminated by a variation of the diaphragm setting.

    摘要翻译: 本发明涉及一种用于旋转扇形快门的非延迟快门释放的方法,特别是用于摄影测量航空摄像机中的方法,其包括计算机装置,该计算机装置经由用于将快门的旋转扇区旋转的控制装置将后者转换成 以照片序列的时间为快门的两个可行打开时间之间的时间间隔的多个整数的方式进行旋转。 通过隔膜设置的变化消除了可能的不正确曝光。

    Method for the determination and indication of the supply of film in
aerial photography cameras
    3.
    发明授权
    Method for the determination and indication of the supply of film in aerial photography cameras 失效
    确定和指示航空摄影机中胶片供应的方法

    公开(公告)号:US4758851A

    公开(公告)日:1988-07-19

    申请号:US927761

    申请日:1986-11-06

    申请人: Ulrich Zeth

    发明人: Ulrich Zeth

    IPC分类号: G03B1/60 G03B1/64 G03B39/04

    CPC分类号: G03B1/60

    摘要: A method is provided for determining and indicating a supply of film remaining in an aerial photography camera, which results in greater measuring precision and improved indication options. While film is advanced during a film step from a film feed spool through a film advancing device to a film take-up spool, pulse counts are taken by coded discs connected to each of the film feed spool and film advancing device. These pulse counts and the length of film advanced during the film step are then used to determine the total circumference of the film on the film feed spool. The total circumference and film thickness are then used to determine the number of film windings remaining on the film feed spool. Finally, the number of remaining exposures of film and the remaining length of the film are determined from the number of remaining windings and both are indicated at an indicator unit.

    摘要翻译: 提供了一种用于确定和指示在航空照相机中剩余的胶片的供应的方法,这导致更大的测量精度和改进的指示选项。 当薄膜在胶片步进中通过胶片推进装置到胶片卷取卷筒前进时,脉冲计数由连接到每个胶片进给卷轴和胶片推进装置的编码光盘进行。 然后使用这些脉冲计数和在膜步骤期间推进的膜的长度来确定膜馈送卷轴上的膜的总周长。 然后使用总圆周和膜厚来确定保持在胶片馈送卷轴上的胶片绕组的数量。 最后,从剩余绕组的数量确定膜的剩余曝光次数和胶片的剩余长度,并且两者都在指示器单元处指示。