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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

V.Yu

. Ignatyev

1, 2

vladimir.ignatiev.mipt@gmail.com

I.A. Matveev

1, 2

ivanmatveev@mail.ru

A.B. Murynin

1, 2

office@aerocosmos.info amurynin@bk.ru

A.N. Trekin

1

alexey.trekin@gmail.com

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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