Fractal signatures for multiscale processing of hyperspectral image data |
| |
Authors: | Pinliang Dong |
| |
Institution: | aDepartment of Geography, University of North Texas, P.O. Box 305279, Denton, TX 76203, USA |
| |
Abstract: | A multiscale approach to hyperspectral image data analysis using fractal signatures was proposed and implemented in the Interactive Data Language (IDL). For 2-D hyperspectral curves, fractal signature measures the changes in curve length with changing scale. Using NASA’s Earth Observing-1 (EO-1) Hyperion image from a study area near Denton, Texas, USA, the capabilities of fractal signatures in discriminating different land cover types were presented in three different ways: (1) fractal signature curves, (2) distances between fractal signatures, and (3) fractal signature images. The asymmetry in length measurement was found to be effective in handling hyperspectral curves obtained from Hyperion radiance data. The contribution of fractal signature images was shown through comparison of image classification results. The results from the Hyperion radiance data suggest that fractal signatures at certain scales can reveal important differences in land cover types. |
| |
Keywords: | Fractal signature Multiscale Hyperspectral Hyperion Land cover |
本文献已被 ScienceDirect 等数据库收录! |
|