Reversible Data Hiding Based on Bidirectional Histogram Modification for 3D Mesh Models

This paper proposes a reversible data hiding algorithm for 3D mesh models. The steep histogram is dynamically constructed to avoid introducing additional model distortion due to excessive movement of prediction errors. A bidirectional histogram modification mechanism is used to maintain considerable embedding capacity which is no need to repeatedly search and record the available peak/zero bin. Experimental results demonstrate that the proposed algorithm achieves high visual quality for low-capacity embedding and is suitable for high-fidelity reversible data hiding.