Authentication email has already been sent, please check your email box: and activate it as soon as possible.
You can login to My Profile and manage your email alerts.
If you haven’t received the email, please:
|
|
There are 13 papers published in subject: > since this site started. |
Results per page: | 13 Total, 2 Pages | << First < Previous 1 2 |
Select Subject |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
1. A Novel Image Scrambling Algorithm Based On Vigenere Cipher | |||
QIANG Saili,HE Liming | |||
Computer Science and Technology 07 September 2012 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Aimed at the safety problem of digital image transmission, a new image scrambling algorithm based on changing the pixel values was presented in this paper. The algorithm improves the "Vigenere encryption" algorithm, made it suitable in the digital image encryption. Experiment results show that, this algorithm brings the conception of "keyword" which is important in the cryptography in the digital image encryption algorithm. To a certain degree, it enhanced the security of scrambling image, compared with the algorithm which is based on changing the pixels position. This method not only provides with a better scrambling effect, but also changes the gray histogram of scrambling image obviously. Besides, this method has a better ability of resist noise compared with the "Bit-exclusive-or" algorithm -the traditional image scrambling algorithm based on changing the single pixel values. | |||
TO cite this article:QIANG Saili,HE Liming. A Novel Image Scrambling Algorithm Based On Vigenere Cipher[OL].[ 7 September 2012] http://en.paper.edu.cn/en_releasepaper/content/4488676 |
2. An Adaptive Watermarking Algorithm Based on Multi-scale Morphological Gradient and Fussy theory in Wavelet Domain | |||
Chen Wenyong,Fan Yanbin | |||
Computer Science and Technology 22 January 2009 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:A novel adaptive watermarking algorithm based on multi-scale morphological gradient and fussy theory in wavelet domain is proposed in this paper. Using multi-scale morphological gradient, analyze the distribution and the strength of the sub-block texture after the wavelet package decomposition, and sort the sub-blocks by textures. According to the texture and energy feature of the sub-block, the sub-block thresholds are determined adaptively, and the coefficients are classified by fuzzy theory. Then, based on the classified result, the strength of the position is modulated adaptively through Noise Visibility Function (NVF), which is the best strength to ensure good visual effect of masking to achieve the best balance between robustness and imperceptibility. A large amount of experimental results show that the proposed algorithm is effective and robust to be resistant to common image processing operations. | |||
TO cite this article:Chen Wenyong,Fan Yanbin. An Adaptive Watermarking Algorithm Based on Multi-scale Morphological Gradient and Fussy theory in Wavelet Domain[OL].[22 January 2009] http://en.paper.edu.cn/en_releasepaper/content/28229 |
3. An Adaptive Watermarking Algorithm in DWT Domain Based on Multi-scale Morphological Gradient | |||
Chen Wenyong,Fan Yanbin | |||
Computer Science and Technology 30 June 2008 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:An adaptive watermarking algorithm in the wavelet domain based on multi-scale morphological gradient is proposed in this paper. Using multi-scale morphological gradient, the distribution and the strength of the sub-block texture after the wavelet package decomposition are analyzed, and the textures of sub-blocks are sorted. According to the texture feature of the sub-block, the sub-block threshold is determined adaptively and the position which is bigger than its threshold is selected as the important coefficient position where the watermarking is embedded. Then, the strength of the position is modulated adaptively through Noise Visibility Function (NVF), which is the best strength to ensure good visual effect of masking to achieve the best effect between robustness and imperceptibility. A large amount of experiments show that the proposed algorithm is effective and robust to common image processing operations. | |||
TO cite this article:Chen Wenyong,Fan Yanbin. An Adaptive Watermarking Algorithm in DWT Domain Based on Multi-scale Morphological Gradient[OL].[30 June 2008] http://en.paper.edu.cn/en_releasepaper/content/22550 |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
Results per page: | 13 Total, 2 Pages | << First < Previous 1 2 |
About Sciencepaper Online | Privacy Policy | Terms & Conditions | Contact Us
© 2003-2012 Sciencepaper Online. unless otherwise stated