Image Encryption Algorithm based on Wavelet Packet Decomposition and Discrete Linear Canonical Transform
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Image Encryption Algorithm based on Wavelet Packet Decomposition and Discrete Linear Canonical Transform Presentation Transcript:
1.Image Encryption Algorithm based on Wavelet Packet Decomposition and Discrete Linear Canonical Transform
2.Outline
Introduction
Wavelet Packet Decomposition
Discrete Fractional Fourier Transform
Discrete Linear Canonical Transform
Image Encryption Algorithm
Simulation Results
Security Analysis
Conclusion
References
3.Introduction(1/3)
4.Encryption is the process of transforming the information to ensure its security.
With the growth of internet and computer networks, a huge amount of digital data is being exchanged over various types of networks.
The security of digital data including images has attracted more attention, and many different image encryption methods have been proposed to enhance the security of these images .
5.Introduction(2/3)
One of the techniques existing in the literature for image encryption is based on wavelet packet decomposition (WPD) and bit plane decomposition [2].
The use of WPD for digital watermarking purpose has also been proposed in [3-5].
Recently Discrete Linear Canonical Transform has also attracted lots of attention in research community and has been used in number of diverse areas[6].
6.Introduction(3/3)
In this paper we propose an image encryption technique combining
I. Wavelet Packet Decomposition &
II. Discrete Linear Canonical Transform (DLCT).
The use of wavelet packet decomposition and DLCT increases the key size significantly making the encryption more robust.
7.In this paper we propose an image encryption technique combining
I. Wavelet Packet Decomposition &
II. Discrete Linear Canonical Transform (DLCT).
The use of wavelet packet decomposition and DLCT increases the key size significantly making the encryption more robust.
8.Wavelet Packet Decomposition
WPD is a method of image decomposition which is closely related with the wavelet decomposition. For a given image, the frequency band has been limited by high frequency and low-frequency part. In Wavelet Decomposition scheme we successively decompose the low-frequency part of the image whereas in WPD both the low-frequency and high frequency parts are successively decomposed. It provide more flexible decomposition at any node.
9. Analysis Structure of Wavelet Packets
10.Commonly Used Wavelets
Haar Wavelets
Biorthogonal Wavelets
Coiflets
Symmlets
Bathlets
Dmeyer
Daubechies
Download
Image Encryption Algorithm based on Wavelet Packet Decomposition and Discrete Linear Canonical Transform Presentation Transcript:
1.Image Encryption Algorithm based on Wavelet Packet Decomposition and Discrete Linear Canonical Transform
2.Outline
Introduction
Wavelet Packet Decomposition
Discrete Fractional Fourier Transform
Discrete Linear Canonical Transform
Image Encryption Algorithm
Simulation Results
Security Analysis
Conclusion
References
3.Introduction(1/3)
4.Encryption is the process of transforming the information to ensure its security.
With the growth of internet and computer networks, a huge amount of digital data is being exchanged over various types of networks.
The security of digital data including images has attracted more attention, and many different image encryption methods have been proposed to enhance the security of these images .
5.Introduction(2/3)
One of the techniques existing in the literature for image encryption is based on wavelet packet decomposition (WPD) and bit plane decomposition [2].
The use of WPD for digital watermarking purpose has also been proposed in [3-5].
Recently Discrete Linear Canonical Transform has also attracted lots of attention in research community and has been used in number of diverse areas[6].
6.Introduction(3/3)
In this paper we propose an image encryption technique combining
I. Wavelet Packet Decomposition &
II. Discrete Linear Canonical Transform (DLCT).
The use of wavelet packet decomposition and DLCT increases the key size significantly making the encryption more robust.
7.In this paper we propose an image encryption technique combining
I. Wavelet Packet Decomposition &
II. Discrete Linear Canonical Transform (DLCT).
The use of wavelet packet decomposition and DLCT increases the key size significantly making the encryption more robust.
8.Wavelet Packet Decomposition
WPD is a method of image decomposition which is closely related with the wavelet decomposition. For a given image, the frequency band has been limited by high frequency and low-frequency part. In Wavelet Decomposition scheme we successively decompose the low-frequency part of the image whereas in WPD both the low-frequency and high frequency parts are successively decomposed. It provide more flexible decomposition at any node.
9. Analysis Structure of Wavelet Packets
10.Commonly Used Wavelets
Haar Wavelets
Biorthogonal Wavelets
Coiflets
Symmlets
Bathlets
Dmeyer
Daubechies
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