Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping

碩士 === 育達商業科技大學 === 資訊管理所 === 101 === This thesis proposes a reversible data hiding technique to improve Zhang and Hong et al.’s methods on cartoon images. Zhang and Hong et al. exploit the block complexity for data extraction and image recovery. Their methods are efficient for natural images, howev...

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Bibliographic Details
Main Authors: Han-Yan Wu, 吳函諺
Other Authors: Wien Hong
Format: Others
Language:zh-TW
Published: 2013
Online Access:http://ndltd.ncl.edu.tw/handle/63933259588366225224
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spelling ndltd-TW-101YDU003960232017-03-05T04:17:56Z http://ndltd.ncl.edu.tw/handle/63933259588366225224 Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping 使用不對稱位元修改的可逆式資訊嵌入技術應用於卡通加密影像 Han-Yan Wu 吳函諺 碩士 育達商業科技大學 資訊管理所 101 This thesis proposes a reversible data hiding technique to improve Zhang and Hong et al.’s methods on cartoon images. Zhang and Hong et al. exploit the block complexity for data extraction and image recovery. Their methods are efficient for natural images, however, the results are unsatisfactory when applies on cartoon images consisting of large flat area. By unbalanced flipping the bits of pixel groups, the block complexity before and after flipping can be distinguished and thus the error rate can be further reduced. Experimental results show that the proposed method has lower error rate than those of Zhang and Hong et al.’s methods without degrading the image quality. Wien Hong 洪維恩 2013 學位論文 ; thesis 37 zh-TW
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language zh-TW
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description 碩士 === 育達商業科技大學 === 資訊管理所 === 101 === This thesis proposes a reversible data hiding technique to improve Zhang and Hong et al.’s methods on cartoon images. Zhang and Hong et al. exploit the block complexity for data extraction and image recovery. Their methods are efficient for natural images, however, the results are unsatisfactory when applies on cartoon images consisting of large flat area. By unbalanced flipping the bits of pixel groups, the block complexity before and after flipping can be distinguished and thus the error rate can be further reduced. Experimental results show that the proposed method has lower error rate than those of Zhang and Hong et al.’s methods without degrading the image quality.
author2 Wien Hong
author_facet Wien Hong
Han-Yan Wu
吳函諺
author Han-Yan Wu
吳函諺
spellingShingle Han-Yan Wu
吳函諺
Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping
author_sort Han-Yan Wu
title Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping
title_short Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping
title_full Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping
title_fullStr Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping
title_full_unstemmed Reversible Data Embedment for Encrypted Cartoon Images Using Unbalanced Bit Flipping
title_sort reversible data embedment for encrypted cartoon images using unbalanced bit flipping
publishDate 2013
url http://ndltd.ncl.edu.tw/handle/63933259588366225224
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