Ms. Fadoua Drira Profile

Fadoua Drira

at CNRS

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Proceedings Article | 1 November 2004 Paper

Image watermarking technique based on the steerable pyramid transform

Fadoua Drira, Florence Denis, Atilla Baskurt

Proceedings Volume 5607, (2004) https://doi.org/10.1117/12.578741

KEYWORDS: Digital watermarking, Digital filtering, Feature extraction, Wavelets, Bandpass filters, Electronic filtering, Image transmission, Visual system, Image filtering

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The application of the steerable pyramid transform in image watermarking has many useful properties. In this paper, we will try to address some properties of steerable pyramid transform that are relevant for use in image watermarking; these properties include: (1) invariance properties; (2) multiresolution aspect; (3) capture of multi-scale and multiresolution structures in the image. All the above mentioned properties make this steerable pyramid transform appropriate for the design of a robust watermarking scheme. This paper proposes an image watermarking scheme based on steerable pyramid transform to embed invisible and robust watermark. We can summarize the basic principles of our method as follow: a host image is first transformed by the steerable pyramid transform. The different features are then extracted by thresolding the different subbands. The watermark sequence is inserted into disjoint blocks centered on the extracted feature points. The original host image is needed in watermark detection mainly for extracting the featured coefficients necessary for robust detection and determining the value of one bit of the watermark spread into a block. It has been confirmed by experiments and comparisons with many existing non-blind techniques that the watermark information embedded by the proposed technique is robust to JPEG compression, additive noise, and median filtering.

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