Spatially Adaptive Wavelet Thresholding for Image Watermarking

In this paper, we introduce a new robust image watermarking technique based on the Discrete Wavelet Transform (DWT). The proposed method extends the concept of image denoising to watermarking. A spatially adaptive wavelet thresholding method is used to select the coefficients to be watermarked. A multi-bit watermark is embedded into the discrete wavelet coefficients of the host image. A semi-blind watermark extraction algorithm is presented and the threshold for a given probability of false alarm is derived. The simulation results show that the proposed method outperforms a wellknown DWT based watermarking method under most attacks including JPEG compression.

• Type: Conference
• Year: 2006
• Where: ICMCS
• Authors: Mahmood Al-khassaweneh, Selin Aviyente
• Keywords: Discrete Wavelet, Discrete Wavelet Transform, ICMCS 2006, Wavelet Thresholding Method