Reliable detection of adaptive pixel pair matching in color and grayscale images

Steganograhy is one of the good hiding techniques which hide the data in other data or digital image. Generally in data hiding method there will be a problem of imbalanced embedding distortion and is vulnerable to steganalysis. Pixel pair matching (PPM) is one of a new data embedding method which introduce two methods such as diamond encoding (DE) and exploiting modification direction (EMD) method. This paper proposed a simple and efficient data embedding method based on PPM where the values of pixel pair is consider as reference coordinate and it look for coordinate in the neighborhood set in accordance with the message digit.DE increase the payload of EMD which have the higher capacity of payload as1.161bpp. Optimal pixel adjustment process (OPAP) considerably reduces the distortion for various payload. The proposed method provides the enhanced performance and lower distortion with higher payload than those of OPAP and DE.