Realization of Embedding and Extracting Watermark Based on Wavelet Transform
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In this paper,a method of realization of embedding and extracting watermark based on wavelet transform is given.An approach image and several high frequency image are gained by multi-level 2D wavelet transform to digital image.Watermark is added to the low band of the wavelet transform of image,and a watermark embedded image is reconstructed.Then,watermark is extracted from the low band of wavelet transform of watermark embedded image.