发明名称 |
Image processing apparatus and image processing method for partial encryption of image blocks |
摘要 |
An image processing apparatus sections an image to be processed into a plurality of blocks, rearranges the blocks into positions specified by an encryption key that uniquely specifies the positions of the blocks in the image, determines a computing method used to convert pixel values of pixels that form a minimum area included in each of the blocks after the blocks are rearranged based on the pixel values of predetermined pixels that do not belong to the minimum area, and converts the pixel values based on the computing method. |
申请公布号 |
EP2104331(B1) |
申请公布日期 |
2014.08.06 |
申请号 |
EP20080020727 |
申请日期 |
2008.11.28 |
申请人 |
FUJITSU LIMITED |
发明人 |
TAKAHASHI, JUN;NAKAGATA, SHOHEI;KURAKI, KENSUKE;ANAN, TAIZO |
分类号 |
H04N1/44;G06F3/12;G06T1/00;G09C1/00;G09C5/00;H04N1/387 |
主分类号 |
H04N1/44 |
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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