National Changhua University of Education Institutional Repository : Item 987654321/10123
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题名: A Steganography Method Based on DWT Features
作者: Chen, Po-Yueh;Lin, Hung-Ju
贡献者: 資訊工程學系
关键词: DWT;Security;Steganography
日期: 2005-06
上传时间: 2012-05-03T09:14:39Z
出版者: 國立台南成功大學
摘要: In this paper, we proposed a novel stegangraphy method utilizing the features obtained from Discrete Wavelet Transform (DWT). Applying a secure coding scheme, the secret messages are embedded into the three high frequency sub-bands of DWT coefficients. Since the portion which human eyes are sensitive to, the low frequency sub-band, remains unaltered, the image quality after secret messages embedding is increased. According to different needs of embedding capacity, we explain the embedding method in three cases. In addition to high embedding capacity and image quality, the proposed approach provides respectable security as well. Because the original secret messages are arithmetically manipulated before embedding, they would not be recovered directly from the Least Significant Bits of coefficients in any sub-band.
關聯: 2005數位生活與網際網路科技研討會, 國立成功大學, 2005年6月2-3日
显示于类别:[資訊工程學系] 會議論文

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