Pannini: A New Projection for Rendering Wide Angle Perspective Images
Inhaltsverzeichnis
Reference
Thomas K. Sharpless, Bruno Postle, Daniel M. Germán: Pannini: A New Projection for Rendering Wide Angle Perspective Images. In: Pauline Jepp, Oliver Deussen (Eds.): Eurographics Workshop on Computational Aesthetics, 2010. 9-16
DOI
http://dx.doi.org/10.2312/COMPAESTH/COMPAESTH10/009-016
Abstract
The widely used rectilinear perspective projection cannot render realistic looking flat views with fields of view much wider than 70°. Yet 18th century artists known as 'view painters' depicted wider architectural scenes without visible perspective distortion.We have found no written records of how they did that, however, quantitative analysis of several works suggests that the key is a system for compressing horizontal angles while preserving certain straight lines important for the perspective illusion. We show that a simple double projection of the sphere to the plane, that we call the Pannini projection, can render images 150° or more wide with a natural appearance, reminiscent of vedutismo perspective. We give the mathematical formulas for realizing it numerically, in a general form that can be adjusted to suit a wide range of subject matter and field widths, and briefly compare it to other proposed alternatives to the rectilinear projection.
Extended Abstract
Bibtex
@inproceedings{Sharpless:2010:PNP:2381312.2381315,
author = {Sharpless, Thomas K. and Postle, Bruno and German, Daniel M.},
title = {Pannini: A New Projection for Rendering Wide Angle Perspective Images},
booktitle = {Proceedings of the Sixth International Conference on Computational Aesthetics in Graphics, Visualization and Imaging},
series = {Computational Aesthetics'10},
year = {2010},
isbn = {978-3-905674-24-8},
location = {London, United Kingdom},
pages = {9--16},
numpages = {8},
url = {http://dx.doi.org/10.2312/COMPAESTH/COMPAESTH10/009-016, http://de.evo-art.org/index.php?title=Pannini:_A_New_Projection_for_Rendering_Wide_Angle_Perspective_Images },
doi = {10.2312/COMPAESTH/COMPAESTH10/009-016},
acmid = {2381315},
publisher = {Eurographics Association},
address = {Aire-la-Ville, Switzerland, Switzerland},
}
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Links
Full Text
http://tksharpless.net/vedutismo/Pannini/panini.pdf
Sonstige Links
http://dl.acm.org/citation.cfm?id=2381312.2381315&coll=DL&dl=GUIDE&CFID=588525319&CFTOKEN=29804931
