Title :
Resolution Enhancement of Multilook Imagery for the Multispectral Thermal Imager
Author :
Galbraith, Amy E. ; Theiler, James ; Thome, Kurtis J. ; Ziolkowski, Richard W.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
This paper studies the feasibility of enhancing the spatial resolution of multilook Multispectral Thermal Imager (MTI) imagery using an iterative resolution enhancement algorithm known as Projection Onto Convex Sets (POCS). A multiangle satellite image modeling tool is implemented, and simulated multilook MTI imagery is formed to test the resolution enhancement algorithm. Experiments are done to determine the optimal configuration and number of multiangle low-resolution images needed for a quantitative improvement in the spatial resolution of the high-resolution estimate. The issues of atmospheric path radiance and directional reflectance variations are explored to determine their effect on the resolution enhancement performance.
Keywords :
atmospheric optics; geophysical signal processing; geophysical techniques; image enhancement; image reconstruction; image registration; image resolution; image sampling; image sensors; infrared imaging; remote sensing; Multispectral Thermal Imager; atmospheric path radiance; directional reflectance variations; image enhancement; image reconstruction; image registration; image resolution; image restoration; image sampling; image sensors; multiangle satellite image modeling; multilook imagery; optimal configuration; projection onto convex sets; resolution enhancement; satellite applications; spatial resolution; High-resolution imaging; Image resolution; Image sensors; Image storage; Optical distortion; Optical imaging; Optical sensors; Satellites; Sensor systems; Spatial resolution; Image enhancement; image reconstruction; image registration; image resolution; image restoration; image sampling; image sensors; satellite applications;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2005.853569
