发明名称 |
ID CARD, ID CARD GENERATING APPARATUS, AND ID CARD READER |
摘要 |
PURPOSE: To provide an ID card whereby even when the ID card is tampered by fraudulently substituting a photo image, the tampering is easily detected. CONSTITUTION: Assuming that a watermark image including ID information is an image existing in a frequency region, inverse conversion from a frequency region is applied to the entire image of the watermark image to obtain a converted image. The converted image is added to the photo image to obtain an embedded image wherein the ID information is embedded as an electronic watermark. The embedded image is recorded on a prescribed card by printing to produce the ID card. |
申请公布号 |
KR20040025511(A) |
申请公布日期 |
2004.03.24 |
申请号 |
KR20020082073 |
申请日期 |
2002.12.21 |
申请人 |
KOWA COMPANY, LTD. |
发明人 |
ONO TSUKASA;EGAWA YUKI |
分类号 |
B42D15/10;G06K5/00;G06K7/00;G06K17/00;G06K19/067;G06K19/10;G09C5/00;H04L9/32;H04N1/387 |
主分类号 |
B42D15/10 |
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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