发明名称 |
DIGITAL DATA FALSE ALTERATION DETECTION PROGRAM AND DIGITAL DATA FALSE ALTERATION DETECTION APPARATUS |
摘要 |
A digital data false alteration detection program causes a computer to execute (a) a step (S1) of dividing digital data into a plurality of smaller block data, (b) a step (S2) of extracting noise inherent to a digital data acquisition device for each of the small block data, (c) a step (S3) of calculating correlation of the noise between adjacent small block data, and (d) a step (S4) of detecting small block data having noise correlation lower than a level predetermined for the surrounding small block data, as falsely altered data. <IMAGE> |
申请公布号 |
EP1453298(A1) |
申请公布日期 |
2004.09.01 |
申请号 |
EP20020788705 |
申请日期 |
2002.12.03 |
申请人 |
FUSO PRECISION CO., LTD.;NAIGAI PROCESS CO., LTD. |
发明人 |
TAKEDA, NAOTO;TANIGUCHI, MASAMICHI;TANIGUCHI, KUNIO;YAMAMOTO, KIYOTAKA |
分类号 |
G06T1/00;H04N1/40;G06T7/00;H04L9/32;H04N1/387 |
主分类号 |
G06T1/00 |
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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