作者
Irshad Ahmad Ansari, Millie Pant, Chang Wook Ahn
发表日期
2016/7/1
期刊
Optik
卷号
127
期号
14
页码范围
5711-5721
出版商
Urban & Fischer
简介
Digital image watermarking is one the powerful means to find out the unauthorized use of copyrighted images. It inserts secret information (watermark) into the host image that helps in finding the rightful ownership of image. SVD (singular value decomposition) based watermarking is known for providing high capacity, robustness an imperceptibility but most of the SVD based techniques suffers from false positive issue. The proposed work is carried out in order to provide a secured image watermarking with a decent capacity. DWT (discrete wavelet transform) is employed on the host image and then block wise singular components (maximum) are used for watermark’s principal component insertion. The insertion of principal component makes the scheme free from false positive error. The insertion is done with the help of multiple scaling factors. The values of scaling factors are found out with the help of ABC (artificial …
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