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A Modified Approach of Image Steganography based on Block DCT and Huffman Encoding without Embedding Dictionary into Stego-Image
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 94 - Number 8 |
| Year of Publication: 2014 |
| Authors: Anil N. Bhure, Vaishali S. Jabade |
10.5120/16364-5774
|
Anil N. Bhure, Vaishali S. Jabade . A Modified Approach of Image Steganography based on Block DCT and Huffman Encoding without Embedding Dictionary into Stego-Image. International Journal of Computer Applications. 94, 8 ( May 2014), 24-27. DOI=10.5120/16364-5774
Abstract
Image Steganography is superimposing a secret image into a cover image such a way that perceptability and properties of cover image remains unchanged. In this paper proposing a modified approach of Image Steganography which is based on Block DCT and Huffman Encoding without inserting a Huffman table into stego image. In the proposed method embedded an encoded secret image (Huffman Table) to the transformed cover image (Block DCT) by ± 1 embedding method. To working on N x N block DCT transforming cover image. The experimental result shows that the modified approach gives better Steganography properties of stego image in terms of PSNR, correlation coefficient than the existing algorithm.
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