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题名: A New Gray-Scale Watermark Method based on Irregular LDPC Codes with Unequal Error Protection (UEP)
作者: Lin, YX; Wan, Y
收录类别: CPCI-S
出版日期: 2016
会议名称: 8th International Conference on Digital Image Processing (ICDIP)
会议日期: MAY 20-23, 2016
会议地点: Chengdu, PEOPLES R CHINA
英文摘要: In this paper, we propose a discrete wavelet transform (DWT)-singular value decomposition (SVD) gray-scale image watermark method based on the irregular Low-density Parity-check (LDPC) codes with unequal error protection (UEP). As one of the best effective ways of protecting copyright of multimedia data, digital watermark technology is widely researched by experts and learners. The difficulty of researching gray-level watermark lies in large embedding capacity. As there exists most important parts, less important portions and non-important materials in the gray-level watermark image, it is not reasonable to treat equally different parts of gray-level watermark image. According to this idea, we put forward the method by using irregular LDPC codes with UEP to protect different importance-level parts. The high-degree bits protect important parts, the low-degree bits protect non-important portions. The experimental results indicate that the proposed scheme can apparently achieve high imperceptibility of embedded image and high robustness defined by the peak signal to noise ratio (PSNR) against image processing attacks.
关键词: gray-scale watermark ; DWT ; SVD ; irregular LDPC code ; UEP ; PSNR
作者部门: [Lin, Yunxia ; Wan, Yi] Lanzhou Univ, Sch Informat Sci & Engn, Lanzhou 730000, Peoples R China
通讯作者: Lin, YX (reprint author), Lanzhou Univ, Sch Informat Sci & Engn, Lanzhou 730000, Peoples R China.
学科分类: Optics; Imaging Science & Photographic Technology
会议录: EIGHTH INTERNATIONAL CONFERENCE ON DIGITAL IMAGE PROCESSING (ICDIP 2016)
卷号: 10033
出版者: SPIE
出版地: BELLINGHAM
语种: 英语
DOI: 10.1117/12.2243859
ISSN号: 0277-786X
WOS记录号: WOS:000391694700106
IR记录号: WOS:000391694700106
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内容类型: 会议论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189712
Appears in Collections:信息科学与工程学院_会议论文

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Recommended Citation:
Lin, YX,Wan, Y. A New Gray-Scale Watermark Method based on Irregular LDPC Codes with Unequal Error Protection (UEP)[C]. 见:8th International Conference on Digital Image Processing (ICDIP). Chengdu, PEOPLES R CHINA. MAY 20-23, 2016.
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