A High-Capacity Coverless Information Hiding Based on the Lowest and Highest Image Fragments

Coverless data hiding is resistant to steganalytical tool attacks because a stego image not altered. On the other hand, one of its flaws limited capacity. Recently, coverless data-hiding method, known as information-hiding method based on most significant bit cover (CIHMSB), has been developed. This uses value in by calculating average intensity fragment and mapping it with predefined sequence. As result, CIHMBS attack threats such additive Gaussian white noise (AGWN), salt-and-pepper attacks, low-pass filtering Joint Photographic Experts Group (JPEG) compression attacks. However, only paper proposes lowest highest values (CIHLHF) image. According experimental results, capacity CIHLHF twice that CIHMSB.