| Authors |
Meixner Philipp, Leberl Franz |
| Appeared in |
Publ. der Deutschen Ges. für Photogrammetrie, Fernerkundung und Geoinformation e.V., Vol. 19, Vorträge Dreiländertagung OVG, DGPF und SGPF; pp 247-256 |
| Date |
2010 |
| Abstract |
Oblique aerial photography has become a widely used resource for urban
imaging. Originating in the US and championed by Pictometry, oblique images are now
being acquired world-wide. We are interested in a comparison between oblique and vertical
aerial photography, especially addressing the façades in urban areas and façade details
such as the number of floors and windows. Can one automate these tasks, and how do
vertical aerial images compare to oblique images? One can image facades in vertical aerial
imagery at the image’s edge under an angle of 25 °. With new wide angle systems, this angle
increases to 35 °. Oblique cameras produce larger angles at 35 to 55 °. With vertical
images, high image overlaps are needed to obtain all façades at these angles. Our results
show that vertical imagery is well-suited to façade analysis, and that oblique images deliver
results compromised by occlusions. This indicates that the benefit of oblique images is
questionable in cases were high overlap vertical images exist. |
| Link |
PDF |
