Gualtar Time-Lapse Hyperspectral Radiance Images, 9 Scenes from Portugal

Time-Lapse Hyperspectral Radiance Images of Gualtar Scene is a sequence of 9 hyperspectral radiance images of the Gualtar scene, acquired at approximately 1-hour intervals. The dataset totals 2.9 GB, with each image having dimensions of approximately 1344 by 1024 pixels and a spectral range from 400 to 720 nm. Sérgio Nascimento, Kinjiro Amano, and David Foster acquired the images in the Minho region of Portugal during 2002 and 2003.

Use Cases

• Analyzing diurnal changes in natural scenes based on the 1-hour interval time-lapse sequence.
• Developing spectral unmixing or classification algorithms based on the 400-720 nm spectral range.
• Studying color constancy and visual perception based on the radiance images and associated RGB renders.
• Calibrating or validating hyperspectral imaging sensors based on the provided radiance data.
• Conducting geospatial analysis based on the included geographic location information.

Strengths

• Contains 9 time-lapse images captured at about 1-hour intervals, enabling temporal analysis.
• Each image has a spectral range from 400 to 720 nm with approximately 1344 by 1024 pixel resolution.
• Includes geographic location data and rendered RGB images for reference and visualization.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data was acquired in 2002-2003; freshness should be verified for contemporary applications.
• Padding artefacts may be visible at the image edges, as noted in the description.

Provenance

Source

David Foster, Sérgio Nascimento, Kinjiro Amano

Collection Method

Acquired using hyperspectral imaging equipment.

Time Range

2002-2003

Freshness

Last updated 2026-04-09 09:30:53; freshness should be verified

Geography

Minho region, Portugal