期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2014
卷号：3
期号：10
页码：3437-3439
出版社：Shri Pannalal Research Institute of Technolgy
摘要：The steganography and digital watermarking employs a steganographic techniques, w here the steganography aims for imperceptibility to human senses and digital watermarking tries to control the robustness. The important aspects of the any image based steganographic system are to provide the quality of the stego image. In the existing w ork, the semi honest adversary model is used w here they may fails to protect the private data sometimes. For embedding the secret messages in the frequency domain, a lossless data hiding scheme is used based on the quantized coefficients of DWT. The proposed work mainly include the embedding of secret messages in the image and then extracting the secret messages from the image using DWT.After the extraction, the original image had been recovered losslessly. The security and the robustness of the DWT is higher than the DCT. The visual quality of the watermarked images has been measured with PSNR and SSIM parameters. The future w ork focuses on the development in their security features.
关键词：Invisible watermarking; DWT; Lossless Data ; hiding; Embedding and Extracting
