Оценка качества изображении при повышении разрешения на основе пространственного спектрального синтеза

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Оценка качества изображений при повышении разрешения…
ISSN 1812-3368. Вестник МГТУ им. Н.Э. Баумана. Сер. Естественные науки. 2017. № 1 139
IMAGE QUALITY ASSESSMENT BY UPSAMPLING METHODS
BASED ON SPATIAL SPECTRUM SYNTHESIS EXTRAPOLATION
. Ignatyev1, 2
I.A. Matveev1, 2
A.B. Murynin1, 2
A.N. Trekin1
1 Aerocosmos Institute for Scientific Research of Aerospace Monitoring, Moscow,
Russian Federation
2 Dorodnitsyn Computing Centre Federal Research Centre Computer Science and Control,
Russian Academy of Sciences, Moscow, Russian Federation
Abstract Keywords
The study tested two methods of image enhancement
using spectral representations. The first approach is based
on the assumption that the required information about
the high spatial resolution details is obtained from the
additional reference image. High-resolution image is
constructed using a combination of spatial spectra of the
main and reference images. The second approach does
not require the use of additional external information
(reference image). High-resolution image is synthesized
by the analytic continuation of the original image
spectrum to the region of high spatial frequencies. We
carried out a study into the selection of a numerical
measure of image similarity (difference) in the quality
assessment problem. We found optimal parameters of
spectral synthesis at a given spatial resolution and
compared the results of quality assessment of the images
enhanced by Lanczos interpolation and by developed
methods with the optimal parameters
Upsampling, spectral synthesis,
quality assessment
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