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A Secure Image Steganography using LSB, DCT and Compression Techniques on Raw Images

机译:在原始图像上使用LsB,DCT和压缩技术的安全图像隐写术

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摘要

Steganography is an important area of research in recent years involving a number of applications. It is the science of embedding information into the cover image viz., text, video, and image (payload) without causing statistically significant modification to the cover image. The modern secure image steganography presents a challenging task of transferring the embedded information to the destination without being detected. In this paper we present an image based steganography that combines Least Significant Bit(LSB), Discrete Cosine Transform(DCT), and compression techniques on raw images to enhance the security of the payload. Initially, the LSB algorithm is used to embed the payload bits into the cover image to derive the stego-image. The stego-image is transformed from spatial domain to the frequency domain using DCT. Finally quantization and runlength coding algorithms are used for compressing the stego-image to enhance its security. It is observed that secure images with low MSE and BER are transferred without using any password, in comparison with earlier works.
机译:隐写术是近年来涉及许多应用程序的重要研究领域。这是将信息嵌入到封面图像中的科学,即文本,视频和图像(有效载荷),而不会引起对封面图像的统计显着修改。现代安全图像隐写术提出了一项艰巨的任务,即将嵌入的信息传输到目的地而不被发现。在本文中,我们提出了一种基于图像的隐写技术,该技术结合了最低有效位(LSB),离散余弦变换(DCT)和对原始图像的压缩技术,以增强有效载荷的安全性。最初,LSB算法用于将有效载荷位嵌入到封面图像中以得出隐身图像。使用DCT将隐秘图像从空间域转换到频域。最后,量化和游程编码算法用于压缩隐身图像以增强其安全性。与早期的作品相比,可以观察到,具有低MSE和BER的安全图像无需任何密码即可传输。

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