Title: Comparison of tasselled cap components of images from Landsat 5 Thematic Mapper and Landsat 7 Enhanced Thematic Mapper Plus
Abstract: Use of the tasselled cap transformation (TCT) is widely accepted in the remote sensing community, but there is concern whether the TCT components from each unique tasselled-cap-like feature space from different sensors are directly comparable. This study compared the differences of the TCT components from Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced TM Plus (ETM+) images with different TCT coefficients from paired images. The results demonstrated that time series analysis of Landsat images using the TCT components derived from Landsat 5 TM and Landsat 7 ETM+ digital numbers (DNs) or at-satellite reflectance could introduce errors. Through converting Landsat 5 TM to Landsat 7 ETM+ DNs prior to the TCT transformation, the RMSEs were reduced by >62 percent. Overall, it was better to derive the TCT components from at-satellite reflectance images, normalised by relative radiometric correction, based on the TCT coefficients for Landsat 7 ETM+ at-satellite reflectance.
Publication Year: 2016
Publication Date: 2016-04-25
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 8
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