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Hybrid Predictor Based Four-Phase Adaptive Reversible Watermarking
- Source :
- IEEE Access, Vol 6, Pp 13213-13230 (2018)
- Publication Year :
- 2018
- Publisher :
- IEEE, 2018.
-
Abstract
- Reversible watermarking has gained importance due to increased involvement of digital media in sensitive fields, such as medical and law enforcement. We propose a prediction error expansion-based watermarking scheme that allows embedding reversible watermark in the image with low distortion. Research work proposes four-phase representation of image which allows exploitation of larger prediction context. We have also proposed a hybrid predictor that helps enhance the prediction accuracy. To reduce image distortion at lower capacity payloads, we use sorting of estimated prediction errors through sorting of prediction context variances. For improvement at higher capacity payloads, adaptive embedding is used to determine whether to embed single or two bits in a given prediction error. The results are compared against some state-of-the-art techniques in the field and show promising results.
- Subjects :
- General Computer Science
Computer science
error-expansion
reversible watermarking
General Engineering
Sorting
020206 networking & telecommunications
Context (language use)
Watermark
02 engineering and technology
Adaptive watermarking
prediction
Histogram
Distortion
0202 electrical engineering, electronic engineering, information engineering
Embedding
020201 artificial intelligence & image processing
General Materials Science
lcsh:Electrical engineering. Electronics. Nuclear engineering
Representation (mathematics)
Digital watermarking
Algorithm
lcsh:TK1-9971
Subjects
Details
- Language :
- English
- ISSN :
- 21693536
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- IEEE Access
- Accession number :
- edsair.doi.dedup.....657170082405ca5b20c6be4e5b9821ad