8 A guide for Downloading the Columbia Pho-
tographic Images and Photorealistic Computer
Graphics Dataset
The download and other additional information for the dataset is described
in the dataset website, accessible from the Trustfoto website: http://www.
ee.columbia.edu/dvmm/trustfoto. Except for the Personal Columbia set,
we are not able to diseeminate the original images from the PRCG, Personal
Greenspun, Google and Recaptured PRCG image sets, due to copyright con-
striants. We have webpages for each of the image sets, which show the
thumbnails from the image sets. The PRCG and the Google thumbnail
webpages provide the hyperlinks and the URLs to the original location of
the images. Therefore, researchers can follow the URLs to access the origi-
nal web pages containing the images and download the images if they want.
The following list describes how to obtain the image sets of the Columbia
Photographic Images and Photorealistic Computer Graphics Dataset.
² PRCG set: The PRCG images can be downloaded by following the
hyperlinks or the URLs listed in the PRCG thumbnails page, acces-
sible from the dataset website. The thumbnail page also contains
meta-information including the source URL, the content category, the
software or tools used, the rendering techniques, the geometric mod-
eling techniques and the post-rendering processing.
² Personal set:
1. Personal Columbia set: The Personal Columbia images come in
three versions: the downsized (about 700x500 pixels) JPEG ver-
sion (55MB), the original-size (about 3000x2000 pixels) JPEG
version (1GB), the original-size RAW-format version (4.9GB).
The downsized version are used in our work for experiments [21].
The downsized and the original-size JPEG version of the Per-
sonal Columbia set can be downloaded from the dataset website,
while the original-size RAW-format version will be distributed in
DVD and can be obtained upon request. The Personal Columbia
thumbnail webpage shows the thumbnails of the Personal Columbia
set as well as the meta-information of the images such asthe file-
name, the lighting/object category, the photographer and the
camera model.
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