Weighted Average-Based Complexity Calculation in Block Selection Oriented Reversible Data Hiding

Complexity of blocks is one the key factors to influence performance reversible data hiding. By embedding into with smaller complexity, invalid shifting in pixel value ordering (PVO) based hiding largely reduced, thus increasing imperceptibility. However, existing techniques are not always accurate complexity calculation, since context pixels usually treated equally. As a result, great number assigned too large weight which inevitably affects precision. In this paper, we propose weighted average novel strategy calculation. scheme, calculate certain help its adjacent neighbors, ensures smooth area larger weight, and otherwise opposite. Experimental results show that our scheme better imperceptibility compared state art has potential application lot fields such as medical imaging.