Study on Separable Data-Hiding Scheme for Encrypted Images
碩士 === 國立臺北大學 === 資訊工程學系 === 102 === This work proposes a novel scheme of separable reversible data hiding for encrypted image using difference expansion, and thus it is easy for the data hider to reversibly embed data in the encrypted image. The separable method does not require the encryptor to re...
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| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2014
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| Online Access: | http://ndltd.ncl.edu.tw/handle/94133994098416429420 |
| Summary: | 碩士 === 國立臺北大學 === 資訊工程學系 === 102 === This work proposes a novel scheme of separable
reversible data hiding for encrypted image using difference
expansion, and thus it is easy for the data hider to reversibly
embed data in the encrypted image. The separable method does
not require the encryptor to reserve embedding room by himself,
and can perfectly recover the original image. And data extraction and image recovery are free of any error. Campared to the previous reversible data hiding methods for encrypted images, the proposed method largely improves the embedding capacity. The most important is the data hider does not have to pre-reserving room for data hiding on encryptor side and he could decide the capacity size by himself.
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