Secret Data Hiding in Image Using AMBTC Technique

Proposed paper discloses a technique for secret data hiding in an image using AMBTC coding scheme. Different from the conventional techniques, proposed technique discloses a novel way of secret data hiding technique in both smooth and complex blocks of the cover image. It suggests different data hiding approach for smooth block and complex block. In case of smooth block, bit-plane is simply modified by secret data. However, in case of complex block, bit-plane is divided in to fixed number of bit sections. The granular division of bit-plane corresponding to only complex blocks helps in to increasing embedding capacity. Each section of the bit-plane is processed for redundancy check. If predetermined redundancy is determined for a predetermined number of sections, then only corresponding sections are used for secret data hiding otherwise bit-plane is not changed. Selective secret data hiding for different sections increasing embedding capacity while preserve image quality. Performance of the proposed technique are compared with the existing techniques, which show significant improvement in data embedding capacity as well as a good quality stego image.