Analysis of the difficulties and possibilities for superresolution

Stanley J. Reeves

doi:10.1117/12.277086

27 June 1997 Analysis of the difficulties and possibilities for superresolution

Stanley J. Reeves

Proceedings Volume 3064, Passive Millimeter-Wave Imaging Technology; (1997) https://doi.org/10.1117/12.277086
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

In passive imaging, the spatial information acquired is strictly bandlimited. Because of this limitation, a number of postprocessing strategies have been proposed to accomplish a measure of superresolution. These strategies incorporate prior information about the image to improve resolution. We show that unless this information is shift- variant, it is unable to contribute to any superresolution. Shift-variant information about the image can be shown to be equivalent to forcing a correlation among the basis images that represent the image. We show that accomplishing superresolution from this correlation is very difficult and has fundamental limitations. Finally, we discuss the potential gains available from using prior information and propose an acquisition strategy that in some cases could improve the potential for superresolution.

Citation Download Citation

Stanley J. Reeves "Analysis of the difficulties and possibilities for superresolution", Proc. SPIE 3064, Passive Millimeter-Wave Imaging Technology, (27 June 1997); https://doi.org/10.1117/12.277086

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