W. Zeng and B. Liu, "An invisible watermark detection technique without using original images for resolving rightful ownerships of digital images." submitted to IEEE Trans. Image Processing, 1997, under revision. Home/Search Document Not in Database Summary Related Articles Check |
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On Resolving Rightful Ownerships of Digital Images by Invisible.. - Zeng, Liu (1997) (24 citations) (Correct)
....should be imposed in order to establish rightful ownership through invisible watermarks. However, within the framework of Fig. 1, it is generally very hard, if not impossible, to design a non invertible (with rigorous proof) encoding process which results in watermarks that can be later extracted [8]. 3 Detecting watermarks without using the original image Based on the above analysis, we believe that the real problem lies mainly in the watermark detection process, not in the watermark encoding process. In fact, careful examination of Fig. 1b) reveals that the detector output of Fig. 1b) ....
....G i (I i ) U i (I i )W i where W i is 1 A sequence fY i g is l dependent if (Y 1 ; Delta Delta Delta ; Y k ) and (Y k n ; Delta Delta Delta ; Y k n m ) are independent whenever n l. independent of I i , then a good choice of S 2i is S 1i W i . Details of the analysis can be found in [8]. To further convince the jury that S 2 is not obtained by analyzing the test image, but instead is a random sequence derived from S 1 which was created independent of any image by the owner, we propose to use a one way deterministic function H to match a meaningful signature S 0 (make sense to ....
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W. Zeng and B. Liu. An invisible watermark detection technique without using original images for resolving rightful ownerships of digital images. submitted to IEEE Trans. Image Processing, 1997.
Extraction of Multiresolution Watermark Images for Resolving.. - Zeng, Liu, Lei (1999) (2 citations) Self-citation (Zeng Liu) (Correct)
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W. Zeng and B. Liu, "An invisible watermark detection technique without using original images for resolving rightful ownerships of digital images." submitted to IEEE Trans. Image Processing, 1997, under revision.
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