{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T16:19:39Z","timestamp":1769789979912,"version":"3.49.0"},"reference-count":21,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,12,17]],"date-time":"2018-12-17T00:00:00Z","timestamp":1545004800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Pixel value ordering (PVO) hiding scheme is a kind of data embedding technique that hides a secret message in the difference of the largest and second largest pixels of a block. After that, the scholars improved PVO scheme by using a threshold to determine whether the block is smooth or complex. Only a smooth block can be used to hide information. The researchers analyzed all the possible thresholds to find the proper one for hiding secret message. However, it is time consuming. Some researchers decomposing the smooth block into four smaller blocks for hiding more messages to increase image quality. However, the complexity of the block is more important than block size. Hence, this study proposes an ameliorated method. The proposed scheme analyzes the variation of the region so as to judge the complexity of the block and applies quantification strategy to quantified the pixel for making sure the pixel is reversible. It adopts an adaptive threshold generation mechanism to find the proper threshold for different images. The results show that the image quality of the proposed scheme is higher than that of the other methods. The proposed scheme can also let the user adjust the hiding rate to achieve higher image quality or hiding capacity.<\/jats:p>","DOI":"10.3390\/sym10120764","type":"journal-article","created":{"date-parts":[[2018,12,18]],"date-time":"2018-12-18T02:15:59Z","timestamp":1545099359000},"page":"764","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Pixel-Value-Ordering based Reversible Information Hiding Scheme with Self-Adaptive Threshold Strategy"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7305-4622","authenticated-orcid":false,"given":"Tzu-Chuen","family":"Lu","sequence":"first","affiliation":[{"name":"Department of Information Management, Chaoyang University of Technology, Taichung 41349, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chun-Ya","family":"Tseng","sequence":"additional","affiliation":[{"name":"Department of Information Management, Chaoyang University of Technology, Taichung 41349, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shu-Wen","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Information Management, Chaoyang University of Technology, Taichung 41349, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thanh","family":"Nhan Vo.","sequence":"additional","affiliation":[{"name":"Department of Information Management, Chaoyang University of Technology, Taichung 41349, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,12,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2700","DOI":"10.1016\/j.jss.2013.05.077","article-title":"Reversible Data Hiding Based on PDE Predictor","volume":"86","author":"Ou","year":"2013","journal-title":"J. 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Video Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1016\/j.jss.2015.04.085","article-title":"Asymmetric-Histogram Based Reversible Information Hiding Scheme Using Edge Sensitivity Detection","volume":"116","author":"Lu","year":"2016","journal-title":"J. Syst. Softw."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"721","DOI":"10.1109\/TIP.2006.891046","article-title":"Expansion Embedding Techniques for Reversible Watermarking","volume":"16","author":"Thodi","year":"2007","journal-title":"IEEE Trans. Image Process."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"332","DOI":"10.7763\/IJCTE.2015.V7.981","article-title":"Novel Prediction Error Based Reversible Data Hiding Method Using Histogram Shifting","volume":"7","author":"Luo","year":"2015","journal-title":"Int. J. Comput. Theory Eng."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1833","DOI":"10.1016\/j.jss.2009.05.051","article-title":"Reversible Data Hiding for High Quality Images Using Modification of Prediction Error","volume":"82","author":"Hong","year":"2009","journal-title":"J. Syst. Softw."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"870","DOI":"10.1587\/elex.5.870","article-title":"Reversible Image Data Hiding Based on Gradient Adjusted Prediction","volume":"5","author":"Fallahpour","year":"2008","journal-title":"IEICE Electron. Express"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"873","DOI":"10.1109\/TIFS.2011.2145372","article-title":"Improved Embedding for Prediction-Based Reversible Watermarking","volume":"6","author":"Coltuc","year":"2011","journal-title":"IEEE Trans. Inf. 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Commun."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.sigpro.2014.04.001","article-title":"Reversible Data Hiding Using Local Edge Sensing Prediction Methods and Adaptive Thresholds","volume":"104","author":"Lu","year":"2014","journal-title":"Signal Process."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"392","DOI":"10.1016\/j.jss.2011.08.033","article-title":"Reversible Data Hiding of High Payload Using Local Edge Sensing Prediction","volume":"85","author":"Feng","year":"2012","journal-title":"J. Syst. Softw."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1109\/TCE.2004.1277836","article-title":"Digital Camera Zooming Based on Unified CFA Image Processing Steps","volume":"50","author":"Lukac","year":"2004","journal-title":"IEEE Trans. Consum. Electron."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"328","DOI":"10.1016\/j.jvcir.2016.03.011","article-title":"Improved PVO-based Reversible Data Hiding: A new Implementation based on Multiple Histograms Modification","volume":"38","author":"Bo","year":"2016","journal-title":"J. Vis. Commun. Image Represent."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/j.jvcir.2017.03.010","article-title":"Efficient PVO-based Reversible Data Hiding Using Multistage Blocking and Prediction Accuracy Matrix","volume":"46","author":"He","year":"2017","journal-title":"J. Vis. Commun. Image Represent."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"198","DOI":"10.1016\/j.sigpro.2012.07.025","article-title":"High-Fidelity Reversible Data Hiding Scheme Based on Pixel-Value-Ordering and Prediction-Error Expansion","volume":"93","author":"Li","year":"2013","journal-title":"Signal Process."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1016\/j.dsp.2013.11.002","article-title":"Improved PVO-Based Reversible Data Hiding","volume":"25","author":"Peng","year":"2014","journal-title":"Digit. Signal Process."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1016\/j.ins.2015.03.022","article-title":"A Novel Reversible Image Data Hiding Scheme Based on Pixel Value Ordering and Dynamic Pixel Block Partition","volume":"310","author":"Wang","year":"2015","journal-title":"Inf. Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1109\/83.855427","article-title":"The LOCO-I Lossless Image Compression Algorithm: Principles and Standardization into JPEG-LS","volume":"9","author":"Weinberger","year":"2000","journal-title":"IEEE Trans. Image Process."}],"container-title":["Symmetry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-8994\/10\/12\/764\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:34:32Z","timestamp":1760196872000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-8994\/10\/12\/764"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,12,17]]},"references-count":21,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2018,12]]}},"alternative-id":["sym10120764"],"URL":"https:\/\/doi.org\/10.3390\/sym10120764","relation":{},"ISSN":["2073-8994"],"issn-type":[{"value":"2073-8994","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,12,17]]}}}