发明名称 |
IMAGE ENCRYPTION/DECRYPTION DEVICE, METHOD, AND PROGRAM |
摘要 |
<p>In order to encrypt a part of an input image in such a manner that the encrypted part can be located for decryption, means for regularly converting pixel values in the area to be encrypted and generating a pattern unique to the pixel value conversion in order to encrypt the area to be encrypted; means for setting a specified positioning marker for locating an encryption position at two or more of the four corners of the area to be encrypted; and means for setting one or more checking marks for verifying appropriateness of a decrypted image in the encrypted area before the decryption are included.</p> |
申请公布号 |
EP2079228(A1) |
申请公布日期 |
2009.07.15 |
申请号 |
EP20070736874 |
申请日期 |
2007.03.13 |
申请人 |
FUJITSU LIMITED |
发明人 |
NAKAGATA, SHOHEI;KURAKI, KENSUKE;ANAN, TAIZO |
分类号 |
H04N1/387;G09C5/00;H04N1/44 |
主分类号 |
H04N1/387 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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