DOI 10.17586/0021-3454-2021-64-7-542-550
UDC 004. 932
USING SUBBAND COSINE TRANSFORM MATRICES TO IMPROVE THE VISUAL QUALITY OF OBJECTS CONTOURS IN AEROSPACE IMAGES
Belgorod National Research University, Department of Information and Telecommunication Systems and Technologies;
D. V. Petrov
Belgorod National Research University, Department of Mathematical and Software Support of Information Systems; Associate Professor
A. A. Chernomorets
Belgorod State National Research University, Belgorod, 308015, Russian Federation; Professor
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Abstract. An approach to solving the problem of improving the visual quality of objects contours in the earth's surface images is presented. The described approach is based on the use of subband cosine transform matrices. A method is proposed for selecting subband image components corresponding to the object contours. In computational experiments, the described method is applied to several images processing. Results of the experiments are presented.
Keywords: edge extraction, image processing, subband matrices, frequency analysis, cosine transform
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