Patents by Inventor Lutz Papenkordt

Lutz Papenkordt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Device for photogrammetric evaluation of stereo-couples of photographs
    Patent number: 4127779
    Abstract: A device for photogrammetric evaluation of stereo-couples of photographs which are scanned light electrically and, in order to obtain height coordinate values, are evaluated by correlation.The device is particularly useful in the evaluation of aerial photographs. To reduce correlation errors due to interfering signals obtained from different correlator signal channels and, hence, to increase the precision of a correlation operation, at one time only the informations from one correlator signal channel in each of the two scanning channels are exploited to obtain the informations from the scanned stereo-pair of photographs.Therefore, it is desireable that, in the course of the correlation operation, the highly resolving correlator signal channels are predominantly and for a considerable long time employed to correlate the informations. According to the invention gate circuits are inserted between the correlator signal channels and the discriminator.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: November 28, 1978
    Assignee: Jenoptik Jena G.m.b.H.
    Inventors: Gerhard Lauenroth, Lutz Papenkordt