期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2019
卷号：97
期号：11
页码：2898-2907
出版社：Journal of Theoretical and Applied
摘要：Embedding of secret information in a digital image will definitely introduce some noise or modulate the image signal in some way. A good steganographic method ensures that such noise is not perceptible or is minimal in order to maintain the fidelity of the vessel. The Bit Plane Complexity Segmentation (BPCS) method uses the Canonical Gray Coded (CGC) bits of the complex bit plane blocks of a vessel image for embedding secret information. Though this guarantees a high payload capacity, it can potentially compromise the fidelity of the vessel particularly in its high order bits. To ensure that the vessel is evenly modulated and hence increase imperceptibility of the embedded data, this paper suggests a tweaking of the BPCS embedding procedure by employing a random selection of the CGC bits in the noisy regions of the vessel. Additionally, in order to boost the vessel�s robustness against compression and other image processing activities, the proposed embedding procedure does not utilize the 0 (zero) CGC bit plane, which is normally targeted for removal by such activities. Results from the experiments carried out showed that stego images from the proposed method had improved signal to noise ratios compared to those from the traditional BPCS method.
