6533b82dfe1ef96bd1290a7c
RESEARCH PRODUCT
BIFOCAL PAIRS OF IMAGES FOR LOW-COST SURVEY IN CLOSE RANGE PHOTOGRAMMETRY
Patrizia Midullasubject
lcsh:Applied optics. Photonics010504 meteorology & atmospheric sciencesComputer sciencebusiness.industrylcsh:Tlcsh:TA1501-1820StereoscopyImage processing010502 geochemistry & geophysics01 natural scienceslcsh:TechnologyDisplacement (vector)law.inventionlawlcsh:TA1-2040Close range photogrammetryFocal lengthComputer visionArtificial intelligenceScale (map)businesslcsh:Engineering (General). Civil engineering (General)Bifocal images Three-dimensional restitution Relief displacement Geometric scheme of camera positioning Close range photogrammetrySettore ICAR/06 - Topografia E Cartografia0105 earth and related environmental sciencesdescription
Abstract. This paper present a method for close range photogrammetry based on an camera positioning scheme in which two cameras capture an equal portion of an object at the same scale, but have different focal lengths and camera-to-object distances. This scheme is alternative to the stereoscopic scheme and is associated with a system of equations which permits one to calculate first the relief displacement of points on a photograph and then their relief relative to a reference plane. The obtained relief and relief displacement values can be used to produce low-cost orthophotographs by using software for image processing, which doesn’t need to be dedicated, but has to provide measurement and calculation functions. Moreover, this method also allows one to obtain three-dimensional coordinates, through further calculations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-11-29 |