資源描述:
《海量多媒體數(shù)字水印技術(shù)研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、.洳≥:≥-博士學(xué)位論文⑧提交日期三墨墨土生二旦浙江大學(xué)博士學(xué)位論文視覺透明性和穩(wěn)健性。5.針對(duì)目前互聯(lián)網(wǎng)上廣泛流行的MP3音頻數(shù)據(jù)格式,提出了一種魯棒的音頻水印算法,該算法利用音頻中節(jié)奏和節(jié)拍這兩個(gè)特征,根據(jù)音頻節(jié)拍切分原理對(duì)音頻進(jìn)行切分,把水印嵌入在音頻高變調(diào)區(qū)域;利用sNR反向推導(dǎo)理論,根據(jù)音頻特征動(dòng)態(tài)嵌入水印。具有普遍意義的反向推導(dǎo)理論使得算法具備普遍性,實(shí)驗(yàn)結(jié)果表明算法具有較高的魯棒性和抗時(shí)間攻擊性。6.系統(tǒng)實(shí)現(xiàn)。對(duì)上述的面向搜索引擎的海量多媒體保護(hù)方案,本文給出了詳細(xì)的系統(tǒng)創(chuàng)建流程,并給出了簡(jiǎn)
2、單的系統(tǒng)原型實(shí)現(xiàn)。關(guān)鍵詞數(shù)字水印,音頻水印,視頻水印,多媒體安全,信息安全,海量水印技術(shù),多媒體認(rèn)證,多媒體檢索,網(wǎng)絡(luò)水印技術(shù)。U浙江大學(xué)博士學(xué)位論文AbstractWithtllefastdevelopmentsofnet、vorkingtec圭lnologiesandmultimediatechnologies,thereisanincreasingdemandofinfonnationsecurityprotectionandmultjmediaautllenticationtechn0109ies
3、.Nowerdays,thecopy—ghtpmtectionisingreatdemaIld,especiallyinthecaseofsearchengine,videoorderingandonlinemusic.Thisthesisnlainlyfocusesonmema四itudewate讎arkinganditsimplementationandthemaincon砸butionsofthisthesisareasfbUows:1.Consid甜ngmei11egaldowmoadingand
4、spreadingofdigitaImedia,afhmeworkwhichworksfinelytoprotectthedi垂talmediacop蜘ghtsundert圭lemassivecircllIllstallce.Thefr鋤eworkcombinesmetraditionalcopyri曲tprotectionandsea『chenginetechn0109iesanditconsistsofVideo-audiowateHn酞ingembedding,digitaImediare砸eVal
5、andmediaauthentication.TheVideo—audiowaterIrIa出ngembeddingaIgoritlllniscoⅡ1posedofvideoandaudiowatennarkingembeddingalgorithmswhichcanbewidelyused;boththecontent-basedretrievalandtext-basedretrievalalgorithInsconsititLltemedigitalmediaretrievalalgorithIns
6、;memediaauthenticationmainlyVaIidatesmediawate瑚arkinga11dotherinfomladonrelatedtotheinternet.234Amonitorsystemofmassmultimediaisimplemented.ThegoalofthesystemistomonitorandcorrectthebellaViorofsearchengine.AblindwatenIlarkingtecll士10logyisproposedinmisp印e
7、rtofacilitateVideo—audiowatennarkingembeddingaIldsecurityauthenticationofmeframework.Puttheblemishesof缸aditionalcopyTightprotectiontechn0109iesandt11eprinciplesofzerowatermarkingintoconsideration,anenergyspanfuctionisproposed.Basedonthefunction,awatemlark
8、ingembeddinganddeCectionmodelwhichcandealwhiththemassiVed硒talmediaisproposed.Themodelca工lmakeuseofabundalltinfonnationindigitalmediath鋤selvesandexperimentsshowthatthemodelisr。bustandtheperfoHnanceisremarkablewhendea