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Sensors 2008, 8(7), 4308-4317; doi:10.3390/s8074308
Article

A Fixed-Threshold Approach to Generate High-Resolution Vegetation Maps for IKONOS Imagery

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Received: 18 May 2008; in revised form: 16 July 2008 / Accepted: 18 July 2008 / Published: 25 July 2008
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Abstract: Vegetation distribution maps from remote sensors play an important role in urban planning, environmental protecting and related policy making. The normalized difference vegetation index (NDVI) is the most popular approach to generate vegetation maps for remote sensing imagery. However, NDVI is usually used to generate lower resolution vegetation maps, and particularly the threshold needs to be chosen manually for extracting required vegetation information. To tackle this threshold selection problem for IKONOS imagery, a fixed-threshold approach is developed in this work, which integrates with an extended Tasseled Cap transformation and a designed image fusion method to generate high-resolution (1-meter) vegetation maps. Our experimental results are promising and show it can generate more accurate and useful vegetation maps for IKONOS imagery.
Keywords: IKONOS; NDVI; Tasseled Cap transformation; image fusion. IKONOS; NDVI; Tasseled Cap transformation; image fusion.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Cheng, W.-C.; Chang, J.-C.; Chang, C.-P.; Su, Y.; Tu, T.-M. A Fixed-Threshold Approach to Generate High-Resolution Vegetation Maps for IKONOS Imagery. Sensors 2008, 8, 4308-4317.

AMA Style

Cheng W-C, Chang J-C, Chang C-P, Su Y, Tu T-M. A Fixed-Threshold Approach to Generate High-Resolution Vegetation Maps for IKONOS Imagery. Sensors. 2008; 8(7):4308-4317.

Chicago/Turabian Style

Cheng, Wen-Chun; Chang, Jyh-Chian; Chang, Chien-Ping; Su, Yu; Tu, Te-Ming. 2008. "A Fixed-Threshold Approach to Generate High-Resolution Vegetation Maps for IKONOS Imagery." Sensors 8, no. 7: 4308-4317.



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