RT Journal Article ID 4179fa176ddc1ebf A1 Abramova, V. V. A1 Lukin, V. V. A1 Abramov, S. K. A1 Rubel, O. A1 Vozel, Benoit A1 Chehdi, Kacem A1 Astola, J. T. A1 Egiazarian, Karen O. T1 ON REQUIREMENTS TO ACCURACY OF NOISE VARIANCE ESTIMATION IN PREDICTION OF DCT-BASED FILTER EFFICIENCY JF Telecommunications and Radio Engineering JO TRE YR 2016 FD 2016-05-18 VO 75 IS 2 SP 139 OP 154 K1 image filtering K1 denoising efficiency prediction K1 additive noise K1 estimation errors K1 requirements to estimation accuracy AB Several approaches to prediction of denoising efficiency for the DCT-based filters with application to single and multichannel images corrupted by different types of noise have been proposed recently. For all of them, it has been assumed that the noise characteristics are a priori and accurately known. In this paper, we analyze the influence of errors in estimated noise variance on prediction accuracy. It is shown that this influence depends upon input parameter used in prediction. Based on the analysis, requirements to accuracy of the noise variance estimation are provided. PB Begell House LK https://www.dl.begellhouse.com/journals/0632a9d54950b268,1aa62c39086e4e5c,4179fa176ddc1ebf.html