The present paper proposed a novel approach called Wavelet based Least Significant Bit Watermarking (WLSBWM) for high authentication, security and copyright protection. Alphabet Pattern (AP) approach is used to generate shuffled image in the first stage and Pell’s Cat Map (PCM) is used for providing more security and strong protection from attacks. PCM applied on each 5×5 sub images. A wavelet concept is used to reduce the dimensionality of the image until it equals to the size of the watermark image. Discrete Cosign Transform is applied in the first stage; later N level Discrete Wavelet Transform (DWT) is applied for reducing up to the size of the watermark image. The water mark image is inserted in LH n Sub band of the wavelet image using LSB concept. Simulation results show that the proposed technique produces better PSNR and similarity measure. The experimental results indicate that the present approach is more reliable and secure efficient.The robustness of the proposed scheme is evaluated against various image-processing attacks.
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机译：本文提出了一种新颖的方法，称为基于小波的最低有效位水印（WLSBWM），以实现高认证，安全性和版权保护。字母图案（AP）方法用于在第一阶段生成随机播放的图像，而佩尔的猫图（PCM）用于提供更高的安全性和强大的防御攻击能力。 PCM应用于每个5×5子图像。小波概念用于减小图像的维数，直到它等于水印图像的大小。离散Cosign变换在第一阶段应用;后来的N级离散小波变换（DWT）用于缩小水印图像的大小。使用LSB概念将水印图像插入到小波图像的LH n Sub band中。仿真结果表明，该技术具有较好的PSNR和相似度。实验结果表明，该方法更加可靠，高效。针对各种图像处理攻击，对所提方案的鲁棒性进行了评估。
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