Date of Publication :28th April 2021

Abstract: Digital Technology rapidly increases the system technology for sending information securely. The internet as a whole does not use secure link, thus the information in transmit may be vulnerable to interception as well. It is important to reduce the chance of information being detect during transmission. Image steganography is the best solution for providing security during the transmission. In this paper, we enhance some image steganography techniques used to increase image hiding capacity, increase peak-signal-noise-ratio value and also avoidance fall off boundary problems that is based on pixel value difference and modulo operation us. In this proposed work, we separated image into 1*4 pixels and secret data binary bit embed in a pixel blocks using pixel difference modulo operation (PDMO) and find average pixel value difference (APVD) readjustment. In PDMO, we find difference between starting three consecutive pixels of a block using a range table. In this phase modulo operation (MO) use for embedding secret bit into these blocks. Now average of the starting three stego-pixels and the last pixel of the block are considered for data embedding using PVD method. The result of the proposed work has been compared with other approaches and found to be improved. In this proposed work, shows quality and PSNR value between cover image and stego-image. The main aim of this paper is that do not losses image quality during transmission.

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