Statistical pixel block selection

Abstract

Secret information sharing has been the need of hour. The author exploited the opportunity to enhance the amount of information passed through images and above that asserting its security level on a bigger scale. This enhancement of security can be attributed to the development of a new methodology of random pixel block selection. The information to be passed is embedded by altering the pixel values of R, G and B individually or collectively depending upon the amount of information that has to be embedded. The proposed paper presents a steganography technique by pushing its information holding capacity to an all new level whereas at the same time not compromising with its robustness and reliability. Since change in the pixel value is minute and as per a predetermined rule as proposed by the author, the difference between original and stego image is imperceptible to normal human eye. An additional authentication scheme is also added for stego image.