A capacity estimation technique for JPEG-to-JPEG image watermarking
| Autor: | Oscar C. Au, P.H.W. Wong |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Computer science
business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Image processing Watermark Data_CODINGANDINFORMATIONTHEORY computer.file_format JPEG Human visual system model Media Technology Discrete cosine transform Computer vision Artificial intelligence Electrical and Electronic Engineering business Quantization (image processing) computer Digital watermarking Data compression |
| Zdroj: | IEEE Transactions on Circuits and Systems for Video Technology. 13:746-752 |
| ISSN: | 1051-8215 |
| DOI: | 10.1109/tcsvt.2003.815949 |
| Popis: | In JPEG-to-JPEG image watermarking (J2J), the input is a JPEG image file. After watermark embedding, the image is JPEG-compressed such that the output file is also a JPEG file. We use the human visual system (HVS) model to estimate the J2J data hiding capacity of JPEG images, or the maximum number of bits that can be embedded in JPEG-compressed images. A.B. Watson's HVS model (Proc. SPIE Human Vision, Visual Process., and Digital Display IV, p.202-16, 1993) is modified to estimate the just noticeable difference (JND) for DCT coefficients. The number of modifications to DCT coefficients is limited by JND in order to guarantee the invisibility of the watermark. Our capacity estimation method does not assume any specific watermarking method and thus would apply to any watermarking method in the J2J framework. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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