Lee Hyun-Suk, Oktavia Vivi, Kim Mi-Ae, Lee Won-Hyung, Journal of Internet Computing and Services, Vol. 5, No. 3, pp. 73-86, Jun. 2004
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Keywords: Hybrid Watermarking, Color Image, Tamper detection, copyright protection

Abstract

This paper presents a hybrid digital watermarking scheme for color images, We insert two watermarks in the DWT domain using spread-spectrum correlation-based watermarking in luminance component of the color image and in spatial domain using pixel-value substitution of blue channel of color image. The objectives of this paper are to have the watermark robust to common signal processing and to detect any changes on the watermarked image for tamper detection at the same time. This watermark scheme will have the robustness characteristic as typical in frequency domain watermark, and also ability to detect any changes on the image (tamper detection).

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