Jayanthi, VE and Rajamani, V and Karthikayen, P (2011) Performance analysis for geometrical attack on digital image watermarking. In: International Journal of Electronics, 98 (11). pp. 1565-1580.
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We present a technique for irreversible watermarking approach robust to affine transform attacks in camera, biomedical and satellite images stored in the form of monochrome bitmap images. The watermarking approach is based on image normalisation in which both watermark embedding and extraction are carried out with respect to an image normalised to meet a set of predefined moment criteria. The normalisation procedure is invariant to affine transform attacks. The result of watermarking scheme is suitable for public watermarking applications, where the original image is not available for watermark extraction. Here, direct-sequence code division multiple access approach is used to embed multibit text information in DCT and DWT transform domains. The proposed watermarking schemes are robust against various types of attacks such as Gaussian noise, shearing, scaling, rotation, flipping, affine transform, signal processing and JPEG compression. Performance analysis results are measured using image processing metrics.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Taylor and Francis Group.|
|Keywords:||image normalisation;digital watermarking;direct-sequence code division multiple access;affine transform|
|Date Deposited:||23 Dec 2011 11:41|
|Last Modified:||23 Dec 2011 11:41|
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