Reversible Image Watermarking using Modified Difference Expansion

被引：0
作者：
Maity, Hirak Kumar [1 ]
Maity, Santi P. [1 ]
机构：
[1] Coll Engn & Management, Dept ECE & EIE, Purba Medinipur 721171, WB, India
来源：
2012 THIRD INTERNATIONAL CONFERENCE ON EMERGING APPLICATIONS OF INFORMATION TECHNOLOGY (EAIT) | 2012年
关键词：
difference expansion; reversible watermarking; KLD; SSIM;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Reversible watermarking (RW) using difference expansion (DE) is quite popular to embed data followed by recovery of the original image. According to this algorithm, the least significant bit (LSB) of inter-pixel differences (between a pair of neighboring pixel) is used to embed watermark data. In the existing DE based works, a large part of the embedding space is used by auxiliary embedding information; hence, effective payload is sacrificed. To this aim, a modification in DE is proposed here that not only increases embedding space but also makes an improvement in imperceptibility and security of the hidden data. Simulation results show an improvement of 2.29 dB in visual quality and 0.002605 in security (Kullback-Leibler distance) measure at 0.49 bpp watermark payload.
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收藏
页码：320 / 323
页数：4
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