Abstract: An apparatus for capture of image data from an object has a detector array containing at least one detector row, and arrangements for rotating the detector array relative to the object, as well as for moving the object and the detector array relative to one another in a desired direction of scan. A control arrangement causes the detector array to be rotated to a desired orientation with respect to the object based on information in the object and causes the object to be scanned by the detector array in such a way that the detector row is at right angles to the direction of scan. A similar method is also provided.

Abstract: The invention is directed to a shutter wherein the rotary discs thereof are accelerated out of a standstill start position for each exposure operation and are again brought to standstill at the end of the exposure operation. The start position is computed such that a constant access time results for all exposure times. An electronic control circuit for the shutter includes a position-control circuit and a speed-control circuit. During each exposure operation, the drive for the rotary discs of the shutter are switched between the two control loops.

Abstract: The invention is directed to an apparatus for evaluating aerial stereo images. The apparatus includes an analytical plotter which is supplemented with an ancillary device for photoelectrically scanning and digitalizing subregions of both stereo images. The signals of the device are computer-correlated with each other to automatically, for example, determine the coordinates of homologous points and the occurring parallaxes. A method of carrying out the invention is also disclosed.

Abstract: The invention contemplates use of a cylindrical lens oriented transverse to an aircraft axis, in conjunction with two light-sensitive detectors in the image plane of the lens, to develop two time-displaced electrical output signals which represent aircraft-motion scanning of terrain by the respective detectors; basically simple circuitry develops the velocity-altitude ratio by measuring the instantaneous displacement time between the two signals. The same cylindrical lens and detecting circuitry may be provided in multiple and in particular relative orientations, to additionally develop drift-angle of the aircraft axis with respect to its instantaneous ground-velocity vector.