Determining Distance of Object Size from a Photograph

Chuqiao Huang

Abstract


The purpose of this paper is to create an equation relating the distance and width of an object in a photograph to a constant when the conditions under which the photograph was taken are known. These conditions are the sensor size of the camera and the resolution and focal length of the picture. The paper will highlight when such an equation would be an accurate prediction of reality, and will conclude with an example calculation.


Keywords


Physics; Optics; Photography

Full Text:

PDF

References


Moxfyre, 2009. Lens angle of View [diagram]. Available at: http://en.wikipedia.org/wiki/File:Lens_angle_of_view.svg [Accessed 02/19/14]; modified

Lens Geometries, 2010. Photoropter. [online] http://photoropter.berlios.de/phtrdoc/techback_geom.html [Accessed 02/19/14]

Lyons, M., 2009. Rectilinear Projection [photograph]. Available at: http://www.tawbaware.com/projections_fed_trans_merc_rect_150.jpg [Accessed 02/19/14]

Canon EOS 500D (EOS Rebel T1i / EOS Kiss X3), 2009. dpReview. [online] Available at: http://www.dpreview.com/products/canon/slrs/canon_eos500d [Accessed 02/19/14]

Birds.kz, 2012. Bean Goose. [online] Available at: http://www.birds.kz/species.php?species=39&l=en [Accessed 02/19/14]

Huang, C., 2014. I don’t like Geese [photograph]. Unavailable online.


Refbacks

  • There are currently no refbacks.
We use both functional and performance cookies to improve visitor experience. Continue browsing if you are happy to accept cookies. Please see our Privacy Policy for more information.
OK