DISCLAIMER: This article is being kept online for historical purposes. Though accurate at last review, it is no longer being updated. The page may contain broken links or outdated information.
Hyperspectral remote sensing (mapping)
Marcus, W. Andrew Department of Geography, University of Oregon, Eugene, Oregon.
- Image acquisition
- Image processing
- Ground truth data
- Classification and mapping
- Accuracy assessment
- Additional Reading
Hyperspectral imagery offers new and unique opportunities for landscape mapping. It is an offshoot of multispectral imagery, which measures reflected light in 1 to approximately 10 bands and has been an important tool in landscape mapping since deployment of Landsat in the 1970s. Both methods measure bandwidths in the infrared, visible, and ultraviolet regions of light. Compared to multispectral sensors used for most remote mapping prior to the late-1990s, however, hyperspectral sensors record narrower bandwidths and more bandwidths of reflected visible and shortwave infrared light. For example, the AVIRIS (Airborne Visible/Infra-Red Imaging Spectrometer) hyperspectral sensor records 224 different bandwidths of light between 400 and 2500 nanometers. In contrast, the Landsat multispectral Thematic Mapper records reflected light in only six bands. The narrower bandwidths of hyperspectral sensors make possible the detection of specific features that have strong reflectance in a narrow band of light (such as certain minerals). The larger number of bands enables detection of subtle differences between similar features, because the cumulative differences become large when summed over many bands.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information