{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,8]],"date-time":"2024-09-08T15:03:40Z","timestamp":1725807820246},"reference-count":36,"publisher":"World Scientific Pub Co Pte Lt","issue":"02","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Image Grap."],"published-print":{"date-parts":[[2021,4]]},"abstract":"<jats:p> Speckles are inherent to SAR. They hide and undermine several relevant information contained in the SAR images. In this paper, a despeckling algorithm using the shrinkage of two-dimensional discrete orthonormal S-transform (2D-DOST) coefficients in the transform domain along with shock filter is proposed. Also, an attempt has been made as a post-processing step to preserve the edges and other details while removing the speckle. The proposed strategy involves decomposing the SAR image into low and high-frequency components and processing them separately. A shock filter is used to smooth out the small variations in low-frequency components, and the high-frequency components are treated with a shrinkage of 2D-DOST coefficients. The edges, for enhancement, are detected using a ratio-based edge detection algorithm. The proposed method is tested, verified, and compared with some well-known models on C-band and X-band SAR images. A detailed experimental analysis is illustrated. <\/jats:p>","DOI":"10.1142\/s0219467821500236","type":"journal-article","created":{"date-parts":[[2020,10,31]],"date-time":"2020-10-31T07:36:47Z","timestamp":1604129807000},"page":"2150023","source":"Crossref","is-referenced-by-count":2,"title":["Despeckling of SAR Images Using Shrinkage of Two-Dimensional Discrete Orthonormal S-Transform"],"prefix":"10.1142","volume":"21","author":[{"given":"Priya R.","family":"Kamath","sequence":"first","affiliation":[{"name":"Department of Mathematical and Computational Sciences, National Institute of Technology Karnataka, Surathkal, Mangaluru 575025, India"}]},{"given":"Kedarnath","family":"Senapati","sequence":"additional","affiliation":[{"name":"Department of Mathematical and Computational Sciences, National Institute of Technology Karnataka, Surathkal, Mangaluru 575025, India"}]},{"given":"P.","family":"Jidesh","sequence":"additional","affiliation":[{"name":"Department of Mathematical and Computational Sciences, National Institute of Technology Karnataka, Surathkal, Mangaluru 575025, India"}]}],"member":"219","published-online":{"date-parts":[[2020,12,19]]},"reference":[{"key":"S0219467821500236BIB001","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1109\/ICMOCE.2015.7489764","volume-title":"2015 Int. 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