基于混沌加密和小波变换的图像隐藏算法实现

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1、-ᨬ㽕ᨬ㽕⏋≠㋏㒳㹿䁝Ўϔ⾡໽✊ⱘᆚⷕ㋏㒳ˈ಴݊݋᳝ᇍ߱ؐⱘᵕッᬣᛳᗻǃ䘡ग़ᗻǃ⹂ᅮᗻㄝ⡍ᗻˈᇚ⏋≠Ϣ⦄᳝ࡴᆚㅫ⊩᳝ᴎ㒧ড়ⱘ⏋≠ࡴᆚᡔᴃ㹿䅸Ўᰃᕜ᳝ࠡ䗨ⱘࡴᆚᮄㅫ⊩DŽ㗠⏋≠೼Ѡ㓈Ⳍᑇ䴶Ϟ㸼⦄ߎⱘϡ㾘߭ᗻˈЎᇏ∖᳈ࡴ䗖ড়Ѣ೒ڣ᭄᥂ࡴᆚⱘᮍ⊩ᦤկњϔ⾡᳝ᬜ䗨ᕘDŽᇣ⊶বᤶᰃϔ⾡ৃ䖒ࠄᯊඳ៪乥ඳሔ䚼ⱘᯊ——乥ඳߚᵤᮍ⊩ˈ݊෎ᴀᗱᛇᰃᇍো䖯㸠㒚㟈ⱘ乥⥛ߚ⾏े໮ߚ䕼⥛ߚ㾷DŽᇣ⊶বᤶ݋᳝ⱘ໮ߚ䕼⥛ߚᵤ㛑࡯ˈ᳈䗖ᑨҎⴐⱘ㾚㾝⡍ᗻˈৃ᳝ᬜഄᢉᕵJPEG2000ⱘ᳝ᤳय़㓽ˈৃᇚ⾬ᆚ೒ߚڣᬷࠄ䕑ԧ೒ڣⱘ໮ϾሎᑺЁএˈ಴㗠෎Ѣᇣ⊶বᤶⱘᙃ䱤㮣ㅫ⊩݋᳝ϡৃ㾕ᗻ੠剕Ầᗻ催ⱘ⡍⚍DŽ෎Ѣ⏋≠ⱘ೒ࡴڣᆚ੠

2、෎Ѣᇣ⊶বᤶⱘ೒ڣ䱤㮣ᡔᴃ᳝Ͼ৘㞾ⱘӬ㔎⚍ˈᇚϸ⾡ᮍ⊩প䭓㸹ⷁˈ䖯㸠᳝ᴎⱘ㒧ড়ˈҢ㗠㛑໳䖯ϔℹᦤ催೒ڣᙃⱘᅝܼᗻDŽLogistic᯴ᇘᰃϔϾ݌ൟⱘ䴲㒓ᗻ⏋≠ᮍ⿟ˈᅗ䖤ㅫㅔऩˈᑊ݋᳝㡃དⱘ⏋≠⡍ᗻDŽԚ݊ᆚ䩹ぎ䯈ᕜ᳝䰤ˈՓ⫼݊ᵘ䗴ⱘࡴᆚㅫ⊩ᅝܼᗻϡ催DŽᴀ᭛䗮䖛๲ࡴ᯴ᇘЁখ᭄Ͼ᭄ҹᠽሩᆚ䩹ぎ䯈ˈৠᯊЎ䆕ࡴᆚㅫ⊩䆒䅵Ϟሑ䞣ㅔऩˈᦤߎϔ⾡෎ѢऩLogistic᯴ᇘⱘ೒ࡴڣᆚㅫ⊩ˈ߽⫼๲䆒ⱘখ᭄ᇍ⫳៤ⱘ⏋≠ᑣ߫䖯㸠ϡৠবᤶˈ㦋প㕂хࡴᆚ੠᳓ҷࡴᆚⶽ䰉ˈᅲ⦄ᇍ೒ڣᙃⱘ㕂хϢ᳓ҷⱘঠ䞡ࡴᆚ໘⧚DŽ䆹ㅫ⊩೼ϔᅮ⿟ᑺϞܟ᳡њLogisticখ᭄ᇥǃᆚ䩹ぎ䯈᳝䰤ⱘ㔎䱋ˈ䗮䖛ϡৠখ᭄੠বᤶ㦋প㕂х੠᳓ҷ

3、ⶽ䰉ˈ䙓ܡ䖤ㅫ໮Ͼᑣ߫ᴹ⫳៤Ⳍᑨⱘবᤶⶽ䰉ˈ䰡Ԣњㅫ⊩ⱘ䖤ㅫ䞣DŽ೼䱤㮣⾬ᆚ೒ڣПࠡˈᇍॳྟ⾬ᆚ೒ڣ䖯㸠⏋≠ࡴᆚ乘໘⧚ˈ㛑໳ᦤ催೒ڣ䱤㮣ⱘϡৃ㾕ᗻ੠剕Ầᗻˈ㒧ড়෎Ѣᇣ⊶বᤶⱘ೒ڣ䱤㮣ᡔᴃˈᴀ᭛᳔㒜ᦤߎϔ⾡෎Ѣ⏋≠ࡴᆚ੠ᇣ⊶বᤶⱘ೒ڣ䱤㮣ㅫ⊩DŽ⬅Ѣ䗮䖛䅵ㅫᴎᅲ⦄᳝䰤㊒ᑺⱘ⏋≠ᑣ߫ᯊᄬ೼⡍ᗻ䗔࣪䯂乬ǃՓ⫼“ᑇ޵ᆚ䩹”੠“ᢳᑇ޵ᆚ䩹”԰ЎऩLogistic᯴ᇘࡴᆚ㋏㒳খ᭄ᯊϡ㛑⫳៤ৃ⫼Ѣࡴᆚⱘ⏋≠ᑣ߫ˈ᠔ҹᇍ෎ѢऩLogistic᯴ᇘⱘ೒ࡴڣᆚㅫ⊩জ䖯㸠њᬍ䖯ˈ㒭ߎϔ⾡෎ѢঠLogistic⏋ড়᯴ᇘⱘ೒ࡴڣᆚㅫ⊩ˈᑊᇚ݊⫼Ѣ⾬ᆚ೒ڣⱘࡴᆚ໘⧚ˈ✊ৢᡞࡴᆚৢⱘ⾬ᆚ೒ڣ䱤㮣ࠄ䕑ԧ೒ڣ㒣ᇣ⊶

4、ߚ㾷ৢⱘ乥ᏺ㋏᭄Ёˈݡ㒣䖛ᇣ⊶䞡ᵘᕫࠄ䱤⾬೒ڣDŽ䆹ㅫ⊩݋᳝ㅔऩᯧᅲ⦄ˈ䖤ㅫ䞣ᇣㄝ⡍⚍DŽӓⳳ㒧ᵰ㸼ᯢˈ䆹ㅫ⊩೼䙁ফJPEGय़㓽ǃాໄ੠ߛ࠾ㄝ೒ڣ໘⧚ⱘᚙމϟˈ݋᳝ϔᅮⱘ剕ẦᗻDŽ݇䬂䆡೒ڣ䱤㮣⏋≠ࡴᆚᇣ⊶বᤶI---AbstractAbstractChaossystemisregardedasakindofnaturalpasswordsystem.Duetoitssensitivity,ergodicityanddeterminacytoinitialextreme,itisconsideredasaverypromisingencryptionalgorithmtocombin

5、ethechaosandexistingencryptionalgorithm.Butthecharactertisticsofirregularitiesofchaosintwo-dimensionalphaseplaneprovidesaneffectivewaytoseekmoresuitableimagedataencryptionmethod.Wavelettransformisatime-frequencyanalysismethodwhichcanachievepartoftimeorfrequency,thebasicideaistoseparatethefre

6、quencysignal,thatismultiresolutiondecomposition.Wavelettransformhasmultiresolutionanalysisability,itismoreadaptivetothevisualcharacteristics,whichcaneffectivelyresistthelossycompressionofJPEG2000.Itcanalsodispersesecretimagetothemultipledimensionsofimage.Thusbasedonwavelettransformhiddeninfo

7、rmationalgorithmhasthecharacteristicsofinvisibilityandhighrobustness.Basedonchaoticimageencryptionandbasedonwavelettransformimagehidingtechnologyhaveeachoftheirmeritsanddemerits,thesetwomethodsshouldbecomplementedandcombinededorganically,whichcanfu