| Electrical & Electronic Engineering |
|
|
|
|
| An integrated classification method for thematic mapper imagery of plain and highland terrains |
| Shan-long LU, Xiao-hua SHEN, Le-jun ZOU, Chang-jiang LI, Yan-jun MAO, Gui-fang ZHANG, Wen-yuan WU, Ying LIU, Zhong ZHANG |
| Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China; Zhejiang Land and Resources Information Center, Hangzhou 310007, China; Zhejiang Climate Center, Hangzhou 310017, China |
|
|
|
Abstract The classification of thematic mapper imagery in areas with strong topographic variations has proven problematic in the past using a single classifier, due to the changing sun illumination geometry. This often results in the phenomena of identical object with dissimilar spectrum and different objects with similar spectrum. In this paper, an integrated classification method that combines a decision tree with slope data, tasseled cap transformation indices and maximum likelihood classifier is introduced, to find an optimal classification method for thematic mapper imagery of plain and highland terrains. A Landsat 7 ETM+ image acquired over Hangzhou Bay, in eastern China was used to test the method. The results indicate that the performance of the integrated classifier is acceptably good in comparison with that of the existing most widely used maximum likelihood classifier. The integrated classifier depends on hypsography (variation in topography) and the characteristics of ground truth objects (plant and soil). It can greatly reduce the influence of the homogeneous spectrum caused by topographic variation. This integrated classifier might potentially be one of the most accurate classifiers and valuable tool for land cover and land use mapping of plain and highland terrains.
|
|
Received: 03 September 2007
Published: 26 March 2008
|
|
|
|
Cite this article:
Shan-long LU, Xiao-hua SHEN, Le-jun ZOU, Chang-jiang LI, Yan-jun MAO, Gui-fang ZHANG, Wen-yuan WU, Ying LIU, Zhong ZHANG. An integrated classification method for thematic mapper imagery of plain and highland terrains. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(6): 858-866.
URL:
http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A071469 OR http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I6/858
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
