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    題名: Effective Detection for Linear Up-Sampling by a Factor of Fraction
    作者: Kao, Yang-Ta;Lin, Hwei-Jen;Wang, Chun-Wei;Pai, Yi-Chun
    貢獻者: 淡江大學資訊工程學系
    關鍵詞: Image forgery;linear interpolation;linear up-sampling;resampling factor;zeroing mask
    日期: 2012-08
    上傳時間: 2012-09-04 10:37:20 (UTC+8)
    出版者: Piscataway: Institute of Electrical and Electronics Engineers
    摘要: In this paper, we propose an effective method for detecting linear up-sampling in images. Our method includes three parts. First, we present an algorithm, Resampling Matrix Construction, that automatically derives the resampling matrix for any given resampling factor of fraction. Second, we show an algorithm, Zeroing Mask Derivation, that constructs a zeroing mask for the resampling produced by the proposed algorithm. Last, we propose an algorithm, up-sampling detection (UD), that detects the up-sampling in images using the zeroing masks in a specific order. Compared with existing methods, the proposed method for UD can not only effectively detect resampling by any fraction but can also recover the up-sampling fraction. Preliminary experimental results show that the proposed method is indeed effective.
    關聯: IEEE Transactions on Image Processing 21(8), pp.3443-3453
    DOI: 10.1109/TIP.2012.2191562
    顯示於類別:[資訊工程學系暨研究所] 期刊論文

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