Sharpening advanced land imager multispectral data using a sensor model

George P. Lemeshewsky

doi:10.1117/12.604517

25 May 2005 Sharpening advanced land imager multispectral data using a sensor model

George P. Lemeshewsky

Proceedings Volume 5817, Visual Information Processing XIV; (2005) https://doi.org/10.1117/12.604517
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

The Advanced Land Imager (ALI) instrument on NASA's Earth Observing One (EO-1) satellite provides for nine spectral bands at 30m ground sample distance (GSD) and a 10m GSD panchromatic band. This report describes an image sharpening technique where the higher spatial resolution information of the panchromatic band is used to increase the spatial resolution of ALI multispectral (MS) data. To preserve the spectral characteristics, this technique combines reported deconvolution deblurring methods for the MS data with highpass filter-based fusion methods for the Pan data. The deblurring process uses the point spread function (PSF) model of the ALI sensor. Information includes calculation of the PSF from pre-launch calibration data. Performance was evaluated using simulated ALI MS data generated by degrading the spatial resolution of high resolution IKONOS satellite MS data. A quantitative measure of performance was the error between sharpened MS data and high resolution reference. This report also compares performance with that of a reported method that includes PSF information. Preliminary results indicate improved sharpening with the method reported here.

Citation Download Citation

George P. Lemeshewsky "Sharpening advanced land imager multispectral data using a sensor model", Proc. SPIE 5817, Visual Information Processing XIV, (25 May 2005); https://doi.org/10.1117/12.604517

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KEYWORDS

Point spread functions

Image resolution

Sensors

Alternate lighting of surfaces

Spatial resolution

Earth observing sensors

Image fusion

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