Skip to main content

DEM from stereo Landsat 7 ETM+ data over high relief areas

Buy Article:

$59.35 plus tax (Refund Policy)

Abstract:

Landsat 7 ETM+ data provide a new opportunity for users to take advantage of satellite sensor imagery for digital elevation model (DEM) generation, due to its new 15 m resolution panchromatic band sensor, extensive coverage and low cost. Using adjacent-orbit stereo-capability DEM is generated over a high mountainous area of Canada. Each stereo-extracted elevation is compared to 10 m accurate topographic DEM to generate error statistics. The largest errors (172 m with 68% level of confidence) and maximum errors (700 m) are found in areas with clouds, snow, glaciers and shadows because image matching during the correlation process failed. Better 3D visual editing tools than the normal automatic interpolation generally applied should be used in these areas to reconstruct the terrain. Without these factors specific to these challenging mountains (high altitude, shadows, permanent snow covers over 2500 m, glaciers, clouds) an error of 92 m is achieved with a 68% level of confidence.

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/01431160110098005

Publication date: May 20, 2002

More about this publication?
tandf/tres/2002/00000023/00000010/art00011
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more