Abstract
In this paper, a copyright protection scheme based on visual cryptography and discrete cosine transform for colour images is proposed. Note that the watermark emphasized here is a colour watermark. Instead of hiding a watermark in a colour image for identifying the ownership of the image, all that is required is to construct an ownership share according to a master share created from the colour image by applying discrete cosine transform plus a watermark used for copyright certification. By stacking the master share and the ownership share together, the watermark for ownership identification can be revealed through the utilization of visual cryptography plus a little additional computation. Additionally, the present scheme is also extremely suitable for multiple watermarking. The security of this scheme can be guaranteed via a pseudo random mechanism and the feature of visual cryptography. With substantial experimental results, the robustness of this scheme can be demonstrated against various image processing attacks.
| Original language | English |
|---|---|
| Pages (from-to) | 133-140 |
| Number of pages | 8 |
| Journal | Imaging Science Journal |
| Volume | 50 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Media Technology
- Computer Vision and Pattern Recognition
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A colour image copyright protection scheme based on visual cryptography and discrete cosine transform. / Chang, C. C.; Hsiao, J. Y.; Yeh, J. C.
In: Imaging Science Journal, Vol. 50, No. 3, 01.01.2002, p. 133-140.Research output: Contribution to journal › Article
TY - JOUR
T1 - A colour image copyright protection scheme based on visual cryptography and discrete cosine transform
AU - Chang, C. C.
AU - Hsiao, J. Y.
AU - Yeh, J. C.
PY - 2002/1/1
Y1 - 2002/1/1
N2 - In this paper, a copyright protection scheme based on visual cryptography and discrete cosine transform for colour images is proposed. Note that the watermark emphasized here is a colour watermark. Instead of hiding a watermark in a colour image for identifying the ownership of the image, all that is required is to construct an ownership share according to a master share created from the colour image by applying discrete cosine transform plus a watermark used for copyright certification. By stacking the master share and the ownership share together, the watermark for ownership identification can be revealed through the utilization of visual cryptography plus a little additional computation. Additionally, the present scheme is also extremely suitable for multiple watermarking. The security of this scheme can be guaranteed via a pseudo random mechanism and the feature of visual cryptography. With substantial experimental results, the robustness of this scheme can be demonstrated against various image processing attacks.
AB - In this paper, a copyright protection scheme based on visual cryptography and discrete cosine transform for colour images is proposed. Note that the watermark emphasized here is a colour watermark. Instead of hiding a watermark in a colour image for identifying the ownership of the image, all that is required is to construct an ownership share according to a master share created from the colour image by applying discrete cosine transform plus a watermark used for copyright certification. By stacking the master share and the ownership share together, the watermark for ownership identification can be revealed through the utilization of visual cryptography plus a little additional computation. Additionally, the present scheme is also extremely suitable for multiple watermarking. The security of this scheme can be guaranteed via a pseudo random mechanism and the feature of visual cryptography. With substantial experimental results, the robustness of this scheme can be demonstrated against various image processing attacks.
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UR - http://www.scopus.com/inward/citedby.url?scp=0036381353&partnerID=8YFLogxK
U2 - 10.1080/13682199.2002.11784400
DO - 10.1080/13682199.2002.11784400
M3 - Article
VL - 50
SP - 133
EP - 140
JO - Imaging Science Journal
JF - Imaging Science Journal
SN - 1368-2199
IS - 3
ER -