Devising an edge effect compensation procedure to eliminate structural distortions during frequency filtering

Authors

DOI:

https://doi.org/10.15587/1729-4061.2024.308369

Keywords:

high-pass filtering, Gaussian filter, edge effect, structure distortion, astronomical image

Abstract

The object of this study is the process of filtering astronomical frames that contain images of potential objects in the Solar System. To recognize the image of each such object in contrast with the background of the frame, it is necessary to carry out frequency filtering of the image. Any frequency filtering using various image filters is aimed at reducing the dynamic range of the background substrate. Also, frequency filtering leads to an increase in the signal-to-noise ratio of the entire image or its fragments, depending on the configuration. However, the identified problem area of each image during frequency filtering is the distortion of the structure of its edges. Therefore, to solve this problem, an edge effect compensation procedure has been proposed to eliminate structural distortions during frequency filtering.

Complementing the image with borders on all sides and the augmented extended image made it possible to introduce a formal connection between the pixel values of the extended image fragment and the pixel values of the extended original image. Testing was carried out using a high-pass Gaussian filter. The use of the devised edge effect compensation procedure made it possible to remove distortion of the structure of the image edges.

The devised edge effect compensation procedure was tested in practice within the CoLiTec project. It was implemented during the in-frame processing stage of the Lemur software.

The study showed that the use of the devised edge effect compensation procedure makes it possible to remove image artifacts compared to conventional filtering without taking into account the edge effect. Also, owing to edge effect compensation, structural image distortions were eliminated, and the signal-to-noise ratio was increased by 7–10 times

Author Biographies

Vladimir Vlasenko, National Space Facilities Control and Test Center

PhD

Space Research and Communications Center

Sergii Khlamov, SoftServe

PhD, Test Automation Lead

Vadym Savanevych, Kharkiv National University of Radio Electronics

Doctor of Technical Sciences, Professor

Department of Systems Engineering

Oleksandr Vovk, Kharkiv National University of Radio Electronics

PhD, Associate Professor

Department of Media Systems and Technologies

Emil Hadzhyiev, Kharkiv National University of Radio Electronics

Department of Systems Engineering

Yehor Bondar, Kharkiv National University of Radio Electronics

Department of Systems Engineering

Yuriy Netrebin, INTIVE Limited

Software Automation QA Engineer

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Devising an edge effect compensation procedure to eliminate structural distortions during frequency filtering

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Published

2024-08-30

How to Cite

Vlasenko, V., Khlamov, S., Savanevych, V., Vovk, O., Hadzhyiev, E., Bondar, Y., & Netrebin, Y. (2024). Devising an edge effect compensation procedure to eliminate structural distortions during frequency filtering. Eastern-European Journal of Enterprise Technologies, 4(2 (130), 30–39. https://doi.org/10.15587/1729-4061.2024.308369

Issue

Vol. 4 No. 2 (130) (2024): Information technology. Industry control systems

Section

Information technology

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Copyright (c) 2024 Vladimir Vlasenko, Sergii Khlamov, Vadym Savanevych, Oleksandr Vovk, Emil Hadzhyiev, Yehor Bondar, Yuriy Netrebin

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