Steganography is the technique for hiding data and aims to hide data in such a way that any eavesdropper cannot observe any changes in the original media. The least significant bit (LSB) is one of the most public techniques in steganography. The classical technique is LSB substitution. The main idea of this technique is to directly alter some LSB of the cover image with the secret data. The essential drawback of the available LSB techniques is that increasing the capacity of the stego image leads to decreasing its quality. Therefore, the goal of the proposed method is to enhance the capacity taking high visual quality into consideration. To achieve this goal, some LSB of the cover image are inverted depending on the secret data for embedding instead of replacing LSB with the secret data. First, the maximum and minimum values in the secret data are determined then subtract all values of the secret data from this maximum value. Finally, make a division for the results and embed the new results into the cover image to obtain the stego image. The results show that the proposed method gives high capacity and good imperceptibility in comparison with the previous methods.

中文翻译：

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一种用于隐藏数据的有效隐写技术

隐写术是一种隐藏数据的技术，旨在以任何窃听者无法观察到原始媒体中的任何变化的方式隐藏数据。最低有效位 (LSB) 是隐写术中最公开的技术之一。经典技术是 LSB 替换。这种技术的主要思想是用秘密数据直接改变封面图像的某些 LSB。可用的 LSB 技术的主要缺点是增加隐写图像的容量会导致其质量下降。因此，所提出方法的目标是在考虑高视觉质量的情况下增强能力。为了实现这一目标，根据用于嵌入的秘密数据反转封面图像的某些 LSB，而不是用秘密数据替换 LSB。第一的，确定秘密数据中的最大值和最小值，然后从该最大值中减去秘密数据的所有值。最后对结果进行划分，将新的结果嵌入到cover图像中，得到stego图像。结果表明，与以前的方法相比，所提出的方法具有高容量和良好的不可感知性。