Photogrammetric stereoplotter
Patent 4539701 Issued on September 3, 1985. Estimated Expiration Date: 
December 10, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 10, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2704960 3677645 3729830 Connection device for connecting a stereocomparator to an electronic computer designed to set up an analytic photogrammetric plotting unit Interconnected, adjustable zoom lens and reticle utilized in lens systems for stereoplotter Photogrammetric plotting apparatus Voice actuated machine control Patent #: 4462080 InventorsAssigneeApplicationNo. 06/448848 filed on 12/10/1982US Classes:382/154, 3-D or stereo imaging analysis250/558, Stereoplotters356/2, CONTOUR PLOTTING359/470, Compensates for camera position (e.g., plotting or mapping type)381/110, VOICE CONTROLLED382/316Curve tracerExaminersPrimary: Boudreau, Leo H.Attorney, Agent or FirmInternational ClassesG01C 11/06 (20060101)G01C 11/00 (20060101) Foreign Application Priority Data1981-10-01 AUAbstractA photogrammetric stereoplotter using a stereoscopic binocular unit (1) to provide an image of spatially separated masters (4,5) and including a cursor (6) providing X Y coordinates and measuring marks providing Z coordinates in which the X Y Z coordinates are fed through a stereogrammetric unit (7) to a computer (8) with a display and/or printer (12,13) and an interface (14) to a display tube (16) and through an optic train (18) to at least one side of the binocular unit (1), and including a topographic keyboard unit (10) arranged to feed information to record the trace, and optionally a voice recognition unit (20) with two-way communication between operator and computer (8), and means in the computer (8) whereby model coordinates from the said binocular unit (1) are changed to image coordinates by the computer (8) to achieve precise superimposition of the trace image to eliminate visual disturbance.Other References
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