发明名称 |
APPARATUS AND METHOD FOR STEGANALYSIS |
摘要 |
An apparatus and method for steganalysis that enhances the ability to detect distortion introduced by data hiding. In embodiments of the invention, a pixel grayscale value in an image is predicted by using its neighboring grayscale values of neighboring pixels. Further, a prediction-error image is produced by subtracting the image from its predicted image. The prediction-error image may is employed to remove at least some variations in image data other than those associated with data hiding an thus, at least partially offsets variations from image aspects other than data hiding.
|
申请公布号 |
US2009154797(A1) |
申请公布日期 |
2009.06.18 |
申请号 |
US20090391014 |
申请日期 |
2009.02.23 |
申请人 |
NEW JERSEY INSTITUTE OF TECHNOLOGY |
发明人 |
SHI YUN-QING;XUAN GUORONG |
分类号 |
G06K9/62;G06K9/00;G06T7/00 |
主分类号 |
G06K9/62 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|