Database Usage
This database may be used for research and non-commercial purposes.
Please cite the following article in any published work that is based on the nature scene collection:
Please cite the following article in any published work that is based on the campus scene collection:
Please cite the following article in any published work that is based on the Contour Database:
Image Capture
| Capture device | Nikon D700 Digital SLR |
| Lens | Sigma 50mm 1:2.8 DG Macro |
| Pixel format | 14 bits per channel RGB |
| Image resolution | 4284 x 2844 |
| Exposure index | ISO 200 |
| Sensor type | FX-format 23.9x36mm CMOS |
Camera Calibration
The following pixel sensitivity functions may be used to convert the image
RGB values to other colorspaces (e.g.: XYZ, LMS, ..., etc.).
Database image pixel values may be converted to CIE XYZ colorspace using the following equation, which is found in these Camera Calibration Notes.
The values of the F-number (f) and the exposure time in seconds (T) are available in the EXIF file for each image.
Scene Collections
Each scene collection consists of image sets and corresponding metadata sets, each archived into a ZIP format file.
The 4284 x 2844 pixel, 14-bit
NEF format images were converted to
PPM format using
dcraw v8.99 with the
options "-4 -o 0 -q 3".
Note that prior to October 31, 2012, the database files contained on this site
had been converted with the "-o 1" option, which specifies
sRGB colorspace
conversion.
The previous image sets containing sRGB conversion may be found
here.
The image sets below do not contain sRGB conversion. If you wish to convert to another colorspace, you may do so programmatically, with, for example, MATLAB or Python. Also, many image processing applications like Photoshop and ImageMagick allow for conversion to other colorspaces (sometimes called Color Profiles or ICC Profiles).
The metadata text files contain shutterspeeds, aperture settings, capture data and time, GPS coordinates, and other Exif file format information.
Note that the thumbnail images below have been gamma corrected and their dynamic range has been adjusted so that they are easier to view on an 8-bit per channel monitor. The 16-bit images contained in the archives are not gamma corrected and their dynamic ranges have not been adjusted.
Each files' size in bytes and
checksum
may be found
here.
Nature Scene Collection
| Content | Nature scenes containing no man-made objects or people |
| Location | Austin, Texas, USA and surrounding areas |
| Total images | 1204 |
| Image sets | 9 |
| Total uncompressed disk space requirements | 82GB |
Set 1 (19GB)
[Exif
metadata]
Set 2 (13GB)
[Exif
metadata]
Set 3 (3.5GB)
[Exif
metadata]
Set 4 (5.8GB)
[Exif
metadata]
Set 5 (2.9GB)
[Exif
metadata]
Set 6 (7.5GB)
[Exif
metadata]
Set 7 (12GB)
[Exif
metadata]
Set 8 (3GB)
[Exif
metadata]
Set 9 (6.4GB)
[Exif
metadata]
Campus Scene Collection
| Content | University campus scenes containing cars, buildings, and people |
| Location | The University of Texas at Austin |
| Total images | 90 |
| Image sets | 1 |
| Total uncompressed disk space requirements | 6GB |
Set 1 (5.5GB) [Exif metadata]
Stereo Image and Range Data Collection
| Content | Stereo images with registered 3D position data of natural and man-made scenes |
| Location | The University of Texas at Austin |
| Total images | 98 |
| Image sets | 1 |
| Total uncompressed disk space requirements | 8.1GB (or 3.6GB for 720p) |
| Technical Details | ReadMe |
Set 1 (8GB) [Exif metadata] [720p (smaller FOV)]
Contour Database
| Content | Hand segmented contour data from natural images |
| Total images | 20 |
| Data format | text |
The data and a description of the contents are available at natural-scenes.cps.utexas.edu/kodakdb
Human Made Scene Collection
| Content | Indoor and outdoor scenes containing human made objects |
| Location | Austin, Texas |
| Total images | 197 |
| Image sets | 1 |
| Total uncompressed disk space requirements | 14GB |
Set 1 (12GB) [Exif metadata]
