Thus, in noiseless condition the embedding capacity using the proposed method is higher than Rejani’s method in noiseless condition. Based on the result of the experiments, it is shown that in noiseless condition, the proposed method has higher embedding capacity than Rejani’s especially when using cover image with sizes larger than 128 × 128. Using the proposed method there is no pixel value changes during the embedding process. The map of the characters is sent to the recipient securely. Secret information can be embedded into the cover by evaluating the histogram and map the characters used in the secret message to the consecutive intensity in the cover image histogram.
This research proposed a method based on histogram and pixel pattern for keeping the stego image noiseless while still keeping the capacity high. In the case of high capacity, it will raise suspicion. Rejani’s method can be noiseless in low capacity but noisy in high capacity. There are several methods for securing the exchanged information such as was proposed by Rejani et al. Recently, information exchange using internet is increasing, such that information security is necessary for securing confidential information because it is possible to eavesdrop the information. Received 29 August 2017 Accepted 24 December 2017 Publication 1 February 2018 Abstract Informatics Graduate Program, School of Computing, Telkom University, Indonesia Information Hiding Based on Histogram and Pixel Pattern
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