Public-key image steganography using discrete cosine transform and quadtree partition vector quantization coding

2003 ◽  
Vol 42 (10) ◽  
pp. 2886 ◽  
Author(s):  
Wen-Yuan Chen
Keyword(s):  
Discrete Cosine Transform ◽  
Vector Quantization ◽  
Image Steganography ◽  
Public Key ◽  
Cosine Transform

Image Steganography Using Discrete Cosine Transform Algorithm for Medical Images

2021 ◽  
pp. 2349-2358
Author(s):  
Nikhitha Keshava Murthy ◽  
Shardul Sharma ◽  
M. Jasmine Pemeena Priyadarsini ◽  
Ravi Ranjan ◽  
Satyaki Sarkar ◽  
...  
Keyword(s):  
Discrete Cosine Transform ◽  
Medical Images ◽  
Image Steganography ◽  
Cosine Transform

scholarly journals Optimal Image Steganography Content Destruction Techniques

2021 ◽  
Vol 15 ◽  
pp. 84-88
Author(s):  
Siddeeq Y. Ameen ◽  
Muthana R. Al-Badrany
Keyword(s):  
Discrete Cosine Transform ◽  
Image Steganography ◽  
Cover Image ◽  
Discrete Wavelet ◽  
Least Significant Bit ◽  
Hidden Information ◽  
Random Data ◽  
Cosine Transform ◽  
Wavelet Techniques ◽  
Lsb Technique

The paper presents two approaches for destroying steganogrphy content in an image. The first is the overwriting approach where a random data can be written again over steganographic images whereas the second approach is the denoising approach. With the second approach two kinds of destruction techniques have been adopted these are filtering and discrete wavelet techniques. These two approaches have been simulated and evaluated over two types of hiding techniques, Least Significant Bit LSB technique and Discrete Cosine Transform DCT technique. The results of the simulation show the capability of both approaches to destroy the hidden information without any alteration to the cover image except the denoising approach enhance the PSNR in any received image even without hidden information by an average of 4dB.

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