Compressive-sensing-based digital image watermark embedding and extraction method
A digital image, compressed sensing technology, applied in the field of information hiding and image processing, can solve the problems of poor anti-attack ability and security, small embedding capacity, poor robustness, etc.
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[0057] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0058] The embodiment of the present invention uses a compressed sensing-based digital image watermark embedding and extraction method to process the image. Among them, a digital image watermark embedding method based on compressed sensing, the process is as follows figure 1 As shown, including the following steps:
[0059] Step 1: Perform thinning processing on binary digital image watermark information to obtain thinned one-dimensional watermark information;
[0060] This embodiment mainly incorporates the theory of compressed sensing, which is a brand-new signal acquisition and coding theory that makes full use of signal sparsity or compressibility;
[0061] In traditional signal processing, according to Shannon / Nyquist sampling theory, a large amount of sampled data is generated during the sampling process. Compressed sensing theory breaks the...
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