Geometrical instruments – Miscellaneous – Light direction
Patent
1977-07-11
1979-11-27
Martin, Jr., William D.
Geometrical instruments
Miscellaneous
Light direction
33 20D, B43L 1320, G01C 1112
Patent
active
041753283
ABSTRACT:
An arrangement for producing photographs which may be used for photogrammetric surveys of spatial objects, in which control points are established in the spatial object. Two photographs are taken using central projections with different positions of the projection center. The control points are the component of a mobile control point system having a reference with four points with known position coordinates constituting a quadrangle. At least two space points located outside the reference plane, have unequal or identical position coordinates relative to the reference plane. At least the space position coordinates of one space point and the space position coordinates of the other space point are known, and at least six such points appear on each of the two photographs. To increase the accuracy of determining the unknown in the transformation equations, a reference plane with more than four points, preferably sixteen points, is introduced into the spatial object to be measured. For more accurate determination of the two projection centers, a reference plane with more than two space points is introduced into the spatial object to be measured. For control purposes, more than two photographs are made with varying spatial positions of the projection centers.
REFERENCES:
patent: 2795046 (1957-06-01), Deker
patent: 3307450 (1967-03-01), Santoni
patent: 3765094 (1973-10-01), Yzerman
patent: 3925897 (1975-12-01), Ferri et al.
Fogiel Max
Martin, Jr. William D.
LandOfFree
Arrangement for producing photographic pictures suitable for pho does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for producing photographic pictures suitable for pho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for producing photographic pictures suitable for pho will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-796537