A stereoscopic viewer adapted to view the images of a panoramic camera film in particular without having to cut and position the image frames side by side and while also readily compensating for the variation in physical separation between points at the center and at the edge of the images frames. In one embodiment, this stereoscopic viewer comprising a base, a viewing table mounted on the base and guiding a panoramic camera film in one direction, guide rods mounted on the base, a frame slidable on the guide rods transversely of the longitudinal direction of the film, and having a cam providing compensation for the variation in physical separation, a pair of optical viewing units including each an eyepiece and an objective, the optical viewing units being bodily displaceable longitudinally and transversely with respect to the film, a link interconnecting the optical viewing units at the objective end thereof, and one optical viewing unit being in cam following engagement with the cam whereby when one objective registers with a point or feature of one image frame, the other objective is caused to register with the corresponding point or feature of the other image frame. In another embodiment, a carriage replaces the base to support the viewing table, guide rods, and frame and the eyepieces remain fixed such that the user does not have to move his head.
4641919 - Stereoscopic viewer for aerial photographs - Owned by Compagnie de Materiel de Micrographie "C.M.M." (St. Maur,FR) [*] Notice:The portion of the term of this patent subsequent to February 12, 2002 has been disclaimed.
The invention relates to a stereoscopic viewer for aerial photographs. In this viewer, optical means permit simultaneous examination, through two eyepieces, of corresponding points in two successive panoramic photographs in the film to be examined. The optical means comprise, for each optical path, on the one hand, a set of plane-mirrors and, on the other hand, a rotating system adapted to rotate the images about the corresponding viewing axis, the unit thus assuring an even number of reflections; the adjusting means comprise elements permitting at least one of the rotating systems to pivot about a fixed axis and/or the displacement of at least one of the plane-mirrors.
A method of obtaining a stereoscopic view from two satellite or two aerial photographs (18, 19) of the same or overlapping area. The method involves aligning the photographs (18, 19) in a stereoscope (10) with the horizontal axis (16) of the stereoscope (10) aligned parallel to the flight path taken to produce the photographs (18, 19) or parallel to the scan direction employed by the satellite. The photographs (18, 19) being produced on infra red film in the case of aerial photography or enhanced to accentuate red and infra red in the case of satellite photography. A series of photographs are produced each with a desired color balance. The photographs are cross compared in the stereoscope (10) to produce an enhanced stereoscopic effect to enable detection and/or measurement of structures or effects.
The present invention relates to a stereoscopic viewer which comprises optical elements permitting simultaneous examination, through two eyepieces, of two successive panoramic images in a film of panoramic exposures, the elements defining an optical path between each of the two images and its relevant eyepiece, and control elements for displacing one of the two images received by the observer in relation to the other; the optical elements comprise, for each optical path, on the one hand, a set of mirrors providing an odd number of reflections and, on the other hand, a total-reflection prism, preferably a right prism, the two prisms having, as a base, an isosceles triangle; the faces of the two prisms corresponding to the third side of the base, upon which total reflection is effected, are arranged substantially perpendicularly to the plane of the film to be examined and form between them an angle of about 90.degree., one of the faces running substantially parallel with the longitudinal axis of the film to be examined.
An image viewing system is disclosed for viewing images recorded on a film record in a particular known angular relationship. The viewing system comprises a rotatable viewing head for selective viewing of portions of the film record as a function of the angular position of the viewing head. As the viewing head is rotated, the film record is adjusted to reflect a similar angular movement in the scenes of the film record. This arrangement corresponds to the dynamics involved if the user was to actually view the scenes of the film record.
Methods and apparatus are provided to capture a real three dimensional scene, including both color and depth information, and subsequently use the resulting color and depth information to produce separate images for a viewer's left and right eyes, thereby producing a stereoscopic view of the original scene.
