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Pocket stereoscope with original test image. Used by military to examine stereoscopic pairs of aerial photographs. Difference in projections of a vertical line in stereoscopy according to distance between left and right eye - animation for eye distance View of Boston, c. 1860; an early stereoscopic card for viewing a scene from nature Stereoscopic image of 787 Orange Street, Addison R. Tinsley ...
A stereoplotter uses stereo photographs to determine elevations. It has been the primary method to plot contour lines on topographic maps since the 1930s. Although the specific devices have advanced technologically, they are all based on the apparent change in position of a feature in the two stereo photographs.
The invention of photography in 1839 opened up a new and more detailed medium for his experiments and the first photographic stereoscopic pairs appeared in the early 1840s as Daguerreotypes and Calotypes. By the 1850s, a stereoscope and an assortment of professionally photographed stereo views were becoming part of the standard equipment of a ...
Overlapping of aerial photos means that around 60% of the covered area of every aerial image overlays that of the one before it. [2] Every object along the flying path can be observed twice at a minimum. [2] The purpose of overlapping the aerial photography is to generate the 3D topography or relief when using a stereoscope for interpretation. [2]
A stereo transparency viewer is a type of stereoscope that offers similar advantages, e.g. the View-Master. Disadvantages of stereo cards, slides or any other hard copy or print are that the two images are likely to receive differing wear, scratches and other decay. This results in stereo artifacts when the images are viewed.
A stereoscope is a binocular device through which a pair of monocular images was projected to both eyes in such a way that the optic axes converge at the same angle, which gives the impression of a 3D image. Since then, people have begun to understand the concept of stereo view.
The pair of identical images are then viewed with the cross-eyed viewing method, the same as one would use in interpreting stereoscopic image pairs. The cross-eyed viewing method has its roots in aerial photography and aerial reconnaissance image interpretation.
Aerial survey, map production from stereo photographs captured from the air; Photomapping, production of a map by joining a series of photographs; Photogrammetry, mapping the geometry of an object using photographs, or stereo photographic pairs; Videogrammetry, determining three-dimensional geometry of an object using pairs of photographs