This paper presents a new algorithm based on fountain code to improve robustness of the watermark in digital image watermarking system.Employing the outstanding performance of LT codes in erasure channel,the proposed scheme combines channel coding with spread spectrum watermarking to recover watermark.In the end,this paper makes a series of tests with fountain coding scheme and LDPC coding scheme and non coding scheme,the result shows the scheme proposed in this paper can raise robustness of the digital wat...
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