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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/11444


    Title: 應用差值擴張法與中間邊緣偵測法於區塊截短編碼法之可回復式資訊隱藏技術
    Authors: 宋秉恩
    Contributors: Department of Applied Informatics and Multimedia
    Keywords: 區塊截短編碼法;中間邊緣偵測法;差值擴張法
    Date: 2011
    Issue Date: 2011-09-18 11:30:19 (UTC+0)
    Publisher: Asia University
    Abstract: 在本論文中,我們先利用區塊截短編碼法(Block Truncation Coding, BTC)算出每個區塊的高低重建階,並將每個區塊高低重建階之差值計算出來。同時運用中間邊緣偵測法(Median Edge Detector, MED)於高低重建階之差值上,以預測每個區塊的預測差值。針對每個區塊,我們將預測差值去減掉高低重建階差值後,所得到的值利用差值擴張法(Difference Expansion, DE),藏回高低重建階中。根據實驗結果顯示,我們所提的方法,具有很高的藏入量與很好的影像品質。
    Appears in Collections:[行動商務與多媒體應用學系] 博碩士論文

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