Reducing location map in prediction-based difference expansion for reversible image data embedding
Authors: Liu, M., Seah, H.S., Zhu, C., Lin, W. and Tian, F.
Journal: Signal Processing
Volume: 92
Issue: 3
Pages: 819-828
ISSN: 0165-1684
DOI: 10.1016/j.sigpro.2011.09.028
Abstract:In this paper, we present a reversible data embedding scheme based on an adaptive edge-directed prediction for images. It is known that the difference expansion is an efficient data embedding method. Since the expansion on a large difference will cause a significant embedding distortion, a location map is usually employed to select small differences for expansion and to avoid overflow/underflow problems caused by expansion. However, location map bits lower payload capacity for data embedding. To reduce the location map, our proposed scheme aims to predict small prediction errors for expansion by using an edge detector. Moreover, to generate a small prediction error for each pixel, an adaptive edge-directed prediction is employed which adapts reasonably well between smooth regions and edge areas. Experimental results show that our proposed data embedding scheme for natural images can achieve a high embedding capacity while keeping the embedding distortion low. © 2011 Elsevier B.V.
Source: Scopus
Reducing location map in prediction-based difference expansion for reversible image data embedding
Authors: Liu, M., Seah, H.S., Zhu, C., Lin, W. and Tian, F.
Journal: SIGNAL PROCESSING
Volume: 92
Issue: 3
Pages: 819-828
eISSN: 1872-7557
ISSN: 0165-1684
DOI: 10.1016/j.sigpro.2011.09.028
Source: Web of Science (Lite)
Reducing location map in prediction-based difference expansion for reversible image data embedding
Authors: Liu, M.L., Seah, H.S., Zhu, C., Lin, W. and Tian, F.
Journal: Signal Processing
Volume: 92
Pages: 819-828
Publisher: Elsevier
DOI: 10.1016/j.sigpro.2011.09.028
Abstract:In this paper, we present a reversible data embedding scheme based on an adaptive edge-directed prediction for images. It is known that the difference expansion is an efficient data embedding method. Since the expansion on a large difference will cause a significant embedding distortion, a location map is usually employed to select small differences for expansion and to avoid overflow/underflow problems caused by expansion. However, location map bits lower payload capacity for data embedding. To reduce the location map, our proposed scheme aims to predict small prediction errors for expansion by using an edge detector. Moreover, to generate a small prediction error for each pixel, an adaptive edge-directed prediction is employed which adapts reasonably well between smooth regions and edge areas. Experimental results show that our proposed data embedding scheme for natural images can achieve a high embedding capacity while keeping the embedding distortion low.
http://www.elsevier.com/locate/sigpro
Source: Manual
Reducing location map in prediction-based difference expansion for reversible image data embedding.
Authors: Liu, M., Seah, H.S., Zhu, C., Lin, W. and Tian, F.
Journal: Signal Process.
Volume: 92
Pages: 819-828
DOI: 10.1016/j.sigpro.2011.09.028
Source: DBLP