Can I read Cross-sensor change detection over a forested landscape: Options to enable continuity of medium spatial resolution measures on EtoBox?

Cross-sensor change detection over a forested landscape: Options to enable continuity of medium spatial resolution measures by Michael A. Wulder; Christopher R. Butson; Joanne C. White is a Environmental Science article available to read on EtoBox.

What is Cross-sensor change detection over a forested landscape: Options to enable continuity of medium spatial resolution measures about?

Landsat data have been widely used for change detection studies of forest ecosystems. Technical issues related to the longevity and quality of the Landsat-5 and -7 instruments prompted this investigation into how data from other sensors may be integrated with the existing Landsat image archive. Change maps indicating the location and extent of stand replacing disturbances occurring between 1999 and 2004 were developed using a rank-order change detection approach. The near-infrared (NIR) band from an image representing initial stand conditions (T1: Landsat-7 ETM+), and the NIR band of images acquired on subsequent dates and with different sensors (T2: ASTER, SPOT-4, and Landsat-5 TM) were selected, essentially acting as three different T2 images. Pair-wise comparisons between the T1 image and each of the T2 images required the pixel values to be sorted, ranked, and differenced; a threshold was then applied to the difference values to identify the stand replacing disturbances. The rankorder change detection approach precluded the need for an additional image normalization process. When compared to a manually interpreted map of change events, the output from the ASTER, SPOT-4, and Lan

Who reads Cross-sensor change detection over a forested landscape: Options to enable continuity of medium spatial resolution measures?

Author

Michael A. Wulder; Christopher R. Butson; Joanne C. White

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0034-4257)

Published

2008

Language

EN

Field

Environmental Science (Physical Sciences)