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A Data Embedding Technique for Image Watermarking using Fresnel Transform  

Seok Kang (충북대학교 전기전자컴퓨터공학부 및 컴퓨터정보통신연구소)
Yoshinao Aoki (북해도대학교 공학연구과)
Abstract
Digital watermarking is a technique embedding hidden information into multimedia data imperceptibly such as images and sounds. Generally an original image is transformed and coded watermark data is embedded in frequency domain watermarking models. In this paper, We propose a new data embedding method using Fresnel transform. A watermark image is fresnel-transformed and the intensity of transformed pattern is embedded into original image. Our watermarking model has the flexibility In data embedding. It is possible to get many embedding patterns from a single watermark image by using various distance parameters with Fresnel transform. All kinds of image models such af shape, letter and photo ran be used as a watermark data. The watermarking experiments were conducted to show the validity of the proposed method, and the results show that our method has the robustness against lossy compression, filtering and geometric transformation.
Keywords
Watermarking; Fourier Transform; Fresnel Transform; Data Embedding;
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Times Cited By KSCI : 1  (Citation Analysis)
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