Friday, September 25, 2009 5:19:40 PM

Pixel based fusion using IKONOS imagery

Uttam Kumar, Chiranjit Mukhopadhyay and T. V. Ramachandra*
Indian Institute of Science, Bangalore, India.
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Pixel based image fusion entails combining geometric details of a high-resolution Panchromatic (PAN) image and spectral information of a low-resolution Multispectral (MS) image to produce images with highest spatial content while preserving the spectral information. This work reviews and implements six fusion techniques – À Trous algorithm based wavelet transform (ATW), Mulitresolution Analysis based Intensity Modulation, Gram Schmidt fusion, CN Spectral, Luminance Chrominance and High pass fusion (HPF) on IKONOS imagery having 1 m PAN and 4 m MS channels. Comparative performance analysis of techniques by various methods reveals that ATW followed by HPF perform best among all the techniques.

Index Terms— Image merging, multispectral, resolution

Uttam Kumar, Chiranjit Mukhopadhyay, T. V. Ramachandra, 2009, Pixel based fusion using IKONOS imagery, International Journal of Recent Trends in Engineering Vol 1, No. 1.
*Corresponding author:
Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560012, India. Phone: 91-80-22933099; Fax: 91-80-23600683.