Digital watermarking for camera-captured images based on just noticeable distortion and Wiener filtering
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Thongkor K., Amornraksa T., Delp E.J.
Publisher: Elsevier
Publication year: 2018
Journal: Journal of Visual Communication and Image Representation (1047-3203)
Volume number: 53
Start page: 146
End page: 160
Number of pages: 15
ISSN: 1047-3203
eISSN: 1095-9076
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
In this paper, we propose a digital image watermarking method for camera-captured images. In our proposed method, an image component of all image pixels is used for embedding an individual watermark bit in order to provide large amount of the embedded watermark. The watermark strength is adjusted in accordance with the modified just noticeable distortion. After the watermarked image is printed and then captured by a digital camera, the reliable watermark extraction is accomplished based on the techniques of reducing distortions introduced from the printing and camera-capturing processes, and predicting original image component from the watermarked image component. In the experiments, various types of pixel value distortions and geometric distortions are considered and explored. With the proposed method, the results show that the watermark can be invisibly embedded, and reliably extracted. We also demonstrate its robustness against various types of distortions from the printing and camera-capturing processes. ฉ 2018 Elsevier Inc.
Keywords
Digital image watermarking, Geometric distortions, Just noticeable distortion, Pixel value distortions
Contact Information