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自动化学报 2005
基于小波域HMM模型的自适应图像水印算法, PP. 705-712 Keywords: Watermark,hiddenmarkovmodel(HMM),blinddetection,HVS Abstract: ？AnadaptiveimagewatermarkingalgorithmbasedonHMMinwaveletdomainisproposed.Thealgorithmisabstractedasfollows:1)thevectorHMMmodelisemployedtodescribethestatisticalcharacteristicofimagewaveletcoefficientsandtheresultingHMMbaseddetectorachievessignificantimprovementsinperformancecomparedtotheconventionalcorrelationdetector;2)adaptivewatermarkembeddingbasedonHVSanalysis;3)anovelembeddingstrategywhichisoptimizedfortheHMMtreestructureisadopted;4)thestrategyofdynamicalthresholdisappliedinwatermarkdetection.HighrobustresultsareachievedagainstStirmarkattacks,suchasJPEGcompression,addingnoise,mediancutandfilter.
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