| Copyright protection in digital museum based on digital holography and discrete wavelet transform |
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| 作者单位： | College of Optics and Electronics Engineering University of Shanghai for Science and Technology Shanghai 200093 Faculty of Electric and Automatic Engineering，Shanghai University of Electric Power，Shanghai 200090，Faculty of Electric and Automatic Engineering Shanghai University of Electric Power，Shanghai 200090，College of Optics and Electronics Engineering University of Shanghai for Science and Technology，Shanghai 200093，College of Optics and Electronics Engineering University of Shanghai for Science and Technology，Shanghai 200093 |
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| 摘 要： | A new method to protect the copyright of digital museum based on digital holography is proposed.The Fresnel hologram of watermark image is embedded in the object to be protected through discrete wavelet transform(DWT).After the watermark detection,the copyright information appears in the reconstructed hologram.With the higher redundancy feature in the hologram,the proposed technique can actually survive several kinds of image processing.Experimental results prove that the presented method has good robustness in image protection.
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