Àëãîðèòì Ñòåãîàíàëèçà Íà Îñíîâå Ìåòîäà Àíàëèçà Èåðàðõèé
نویسندگان
چکیده
 ñòàòüå ïðåäëîæåí ìåòîä âûÿâëåíèÿ ñòåãàíîãðàôè÷åñêèõ âñòàâîê, ôîðìèðóåìûõ ñ ïîìîùüþ ïîäìåíû íàèìåíåå çíà÷àùåãî áèòà (LSB). Îáíàðóæåíèå îñóùåñòâëÿåòñÿ ñ ïîìîùüþ ðàçáèåíèÿ èçîáðàæåíèÿ íà ñëîè è àíàëèçà îêðóæåíèÿ êàæäîãî áèòà ìëàäøåãî ñëîÿ. Àíàëèçèðóþòñÿ òàêæå áèòû ðàñïîëîæåííûå íàä èññëåäóåìûì áèòîì â äâóõ âûøåëåæàùèõ ñëîÿõ. Äëÿ ïðèíÿòèÿ ðåøåíèÿ î ïîäìåíå êîíêðåòíîãî áèòà èñïîëüçóåòñÿ ìåòîä àíàëèçà èåðàðõèé. Âåñîâûå êîýôôèöèåíòû â ðàìêàõ ìåòîäà àíàëèçà èåðàðõèé ôîðìèðóþòñÿ íà îñíîâå çíà÷åíèé ñàìèõ áèòîâ. Ïðîâåäåí êîìïüþòåðíûé ýêñïåðèìåíò ñ âñòðàèâàíèåì ñîîáùåíèÿ â îãðàíè÷åííóþ ïðÿìîóãîëüíóþ îáëàñòü èçîáðàæåíèÿ. Ïîêàçàíà âûñîêàÿ ýôôåêòèâíîñòü ïðåäëîæåííîãî ìåòîäà.
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