enhancing pixel value difference (pvd) image steganography by using mobile phone keypad (mpk) coding
TRANSCRIPT
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Enhancing Pixel Value Difference (PVD) Image Steganography by Using Mobile Phone Keypad (MPK) Coding
Marwa E. Saleh [email protected] Faculty of Computers and Information, Dept. of Computer Science Minia University Minia, Egypt
Abdelmgeid A. Aly [email protected] of Science, Dept. of Computer Science Minia University Minia, Egypt
Fatma A. Omara [email protected] Faculty of Computers and Information, Dept. of Computer Science Cairo University Cairo, Egypt
Abstract
Keywords: ,,
1. INTRODUCTION
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Stego image
Secret message
Stego key Cover image
Extraction
Algorithm
Embedding
Algorithm
Secret message Stego key
FIGURE 1:
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2. RELATED WORK
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3. THE PROPOSED METHOD
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3.1 The PVD-MPK Method
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i i+1
2 5 9
3 1 1
4
5
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TABLE 1:
Example 1:
p i , p i+1
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p i p i+1 .
i p i , p i+1
3.2 The Embedding Algorithm
є
Low level
2 5 9
3 1 1
4
High level
5
TABLE 2:
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FIGURE 2:
Example 2
Example 3
i i
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3.3 The Extracting Algorithm
i i i+1|
b0= (di - li) + i mod 2.
4. EXPERIMENTAL RESULTS
Cover image 256*256
Capacity (bytes)
PSNR of method in [13]
PSNR of Proposed method
TABLE 3:
Cover image 512*512
Capacity (bytes)
PSNR of method in [14]
PSNR of Proposed method
TABLE 4:
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Cover Image 512x512
Capacity (bytes)
PSNR of OCTA (STAR) PVD[8]
PSNR of Proposed method
TABLE 5:
Cover Image 512x512
Capacity (bytes)
PSNR of method in [ ]
Capacity (bytes)
PSNR of Proposed method
TABLE 6: 7
5. CONCLUSIONS AND FUTURE WORK
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6. REFERENCES
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