Spectral scene database
The scene database includes three types of data.
- Hyperspectral data measure from 400 to 900 nm
- Multispectral data measure from 400 to 700 nm
- HDR data were acquired with multiple exposures of a gray-scale camera
We have collected a set of hyperspectral data resources that you can freely download. These are two-dimensional spectral scenes that you might find useful for testing with ISETCAM. These 2D spectral scenes include images of human faces, fruits, objects, and some outdoor scenes.
The hyperspectral scene data were measured from 400-950 nm using a special hyperspectral camera from our colleague Torbjorn Skauli in Norway.
The data are stored in the Stanford digital repository and can be downloaded from these links:
Specific links to the individual data sets
- ISET scenes with fruits and calibration charts
- ISET hyperspectral scene data for landscapes
- ISET hyperspectral scenes of faces at 3M (low res)
- ISET hyperspectral scenes of human faces at 1M distance (high res)
The multispectral scene data were collected in the visible range (380-700nm) using a variety of different instruments. In some cases we built cameras with multiple LED illuminants. In other cases we used a variety of color filters in front of a single camera. Have a look at the publications.
- ISET multispectral scenes in visible - - Acquisition methods are described in this publication
- ISET multispectral scenes in visible and near infrared - Acquisition methods are described in this publication
- ISET multispectral scenes - Acquisition methods are described in this publication
(At the moment the data are on the Remote Data Toolbox site. The transfer is in process.)
The HDR image data are stored in ISETCam scene format in this Stanford Digital repository collection.
The paper describing the image acquisition methods is High Dynamic Range Imaging of Natural Scenes. F. Xiao, J. DiCarlo, P. Catrysse and B. Wandell In Tenth Color Imaging Conference: Color Science, Systems, and Applications, 2002. Scottsdale, AZ.
The montage shows the types of images in the collection. Most of the images include objects in direct sun and then shadowed regions, sometimes even shadows within shadows. There are some images that include bright light sources.
