A 9/7 wavelet-based lossless data hiding
| Autor: | Hui-Yu Huang, Shih-Hsu Chang |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Discrete wavelet transform
Lossless compression business.industry Stationary wavelet transform Second-generation wavelet transform ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Wavelet transform Pattern recognition Data_CODINGANDINFORMATIONTHEORY Wavelet Frequency domain Computer Science::Multimedia Discrete cosine transform Artificial intelligence business Computer Science::Cryptography and Security Mathematics |
| Zdroj: | CIMSIVP |
| Popis: | In this paper, a lossless data-hiding approach is presented based on quantized coefficients of discrete wavelet transform (DWT) in the frequency domain to embed secret message. Using the quantized coefficients for 9/7 wavelet filter in DWT, we embed secret data into the successive zero coefficients of the medium-high frequency components in each reconstructed block for 3-level 2-D DWT of a cover-image. The procedures of the proposed system include embedment, extraction, and restoration. Experimental results show that the proposed method can achieve high embedding capacity and acceptable image quality of stego-image, and data reversibility. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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