On the accuracy of PSF representation in image restoration
作者： A.E. Savakis , H.J. Trussell
DOI: 10.1109/83.217229
关键词:
摘要: Point spread function (PSF) models derived from physical optics provide a more accurate representation of real blurs than simpler based on geometrical optics. However, the PSF do not always result in significantly better restoration, due to coarse sampling recording device and insufficiently high signal-to-noise ratio (SNR) levels. Low resolutions aliasing errors suboptimal restorations. A high-resolution where are minimized is used obtain improved The SNR parameter which ultimately limits restoration quality determines need for an model. As rule thumb, can be place without significant loss when less 30 dB. >
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