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Instead of using a fixed or a content- adaptive predictor for each pixel independently, the authors first employ pixel clustering according to the structural similarities of image patches, and then for all the pixels assigned to each cluster, an optimized pixel predictor is estimated from the group context. Experimental results demonstrate that the proposed method outperforms state-of-art counterparts such as the simple rhombus neighborhood, the median edge detector, and the gradient-adjusted predictor et al.<\/p>","DOI":"10.4018\/ijdcf.2014070101","type":"journal-article","created":{"date-parts":[[2014,12,9]],"date-time":"2014-12-09T08:25:20Z","timestamp":1418113520000},"page":"1-15","source":"Crossref","is-referenced-by-count":0,"title":["Optimizing Non-Local Pixel Predictors for Reversible Data Hiding"],"prefix":"10.4018","volume":"6","author":[{"given":"Xiaocheng","family":"Hu","sequence":"first","affiliation":[{"name":"School of Information Science and Technology, University of Science and Technology of China, Hefei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiming","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, University of Science and Technology of China, Hefei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nenghai","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Information Science and Technology, University of Science and Technology of China, Hefei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"ijdcf.2014070101-0","doi-asserted-by":"publisher","DOI":"10.1109\/TITB.2005.855556"},{"key":"ijdcf.2014070101-1","doi-asserted-by":"crossref","unstructured":"Caldelli, R., Filippini, F., & Becarelli, R. 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Optimizing Pixel Predictors Based on Self-similarities for Reversible Data Hiding. 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