Grey scale image hiding method based on decomposition operation

Capacity is one of the importance factors in the hiding techniques. The challenge facing of the concealment techniques is the inverse relationship between the capacity and quality of stego-image. The Least-Significant-Bit (LSB)-based approach is a popular hiding technique in the spatial domain. Number of methods was proposed to enhance the performance of LSB method. However, the capacity of most hiding approaches especially in spatial domain was little and not enough to hide image in image with same size and type. New disguise algorithm based on decomposition and LSB is proposed in this paper. Distorted image as cover image used in this paper to decrease the effect of increase the capacity. Secret image decomposed by binary bit planes and hide 5 bit most significant bit planes from 8. Bit planes are change in order to avoid the appearance of the scene of secret image in stego-image ordering. Experimental results show that the capacity of proposed method is perfect with high quality of recovered image and strong against statistical analysis.