Creating HDR photo by manipulating dynamic range of a single raw format photo (CROSBI ID 649968)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Maurer, Dubravka ; Šamanović, Sanja ; Gajski, Dubravko
engleski
Creating HDR photo by manipulating dynamic range of a single raw format photo
Contemporary digital cameras enable automated process of creating several photos of the same frame in different exposure (bracketing). By the post processing of the photo, editing it in tone mapping, correctly illuminated parts of individual photos are merged into a new one - High Dynamic Range (HDR) image. The differences between illumination of the parts of the object in direct sunlight and the one in deep shade result in a lack of recognizable details which creates challenges in photogrammetric interpretation. The dynamic range of photo stored in RAW-format reflects the abilities of the sensor to record the intensities of light. Contemporary software packages allow manipulation in the range of illumination to create five photos with different exposure values (-1, -0.5, 0, +0.5, +1) from the single original RAW format. Photos were then merged into one HDR image with uniform illumination in all frame (subject/pattern) without any loss of quality. This method of creating pronounced real textures of the subject enables quality photo interpretation and the creation of orthophoto with significant application in 3D modeling in architecture and cultural heritage. It is also exceptionally practical in creating HDR images from photos taken by drones where there are no possibilities of taking more photos from the same observation point.
HDR ; RAW ; terrestrial photogrammetry ; illumination ; exposure ; drone
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Podaci o prilogu
63-70.
2017.
objavljeno
10.5593/sgem2017/23
Podaci o matičnoj publikaciji
17th International multidisciplinary scientific geoconference - Conference proceedings, vol. 17, issue 23 : Informatics, Geoinformatics and Remote sensing
Albena: International Multidisciplinary Scientific GeoConferences (SGEM)
978-619-7408-03-4
1314-2704
Podaci o skupu
17th International multidisciplinary scientific geoconference SGEM 2017
poster
27.06.2017-06.07.2017
Albena, Bugarska