Aspen Bibliography

Change detection methodology for aspen defoliation with Landsat MSS digital data

Document Type

Article

Journal/Book Title/Conference

Canadian Journal of Remote Sensing

Volume

10

Issue

2

First Page

135

Last Page

142

Publication Date

1984

Abstract

A method was developed to detect aspen defoliation, without detailed field data, based on an understanding of the expected spectral changes and an application of digital analysis and statistical techniques. The analysis procedure included the creation of a three-band multidate color composite image on which color renditions were analysed to identify defoliation areas. A simple three-band parallelepiped classification was then performed using LANDSAT band 7 data from images before (1977) and after (1980) defoliation plus the 1980 band 5 data. Areas identified as defoliated on the color composite were classified as a single theme. Discriminant analyses were employed to relate spectral band combinations to band differences and ratios, to determine their relative effectiveness in classifying defoliated areas. A simple three-spectral-band combination was more effective than the band difference or ratio combinations analysed for classification of defoliated areas.

Link to Full Text

Share

 
COinS