On Stereo Embedding by Reversible Watermarking

This paper investigates the storage and bandwidth requirements reduction for stereo images by using reversible watermarking. Given a pair of stereo images, the information needed to recover the right frame is embedded into the left frame. Thus, storage and bandwidth requirements are halved. The proposed approach relies on the embedding capacity of the reversible watermarking. Compared with simple stereo image pair compression, the proposed approach has the advantage that the content of the image remains available without additional manipulations. Furthermore, the use of reversible watermarking allows the exact recovery of the left frame. If the reversible watermarking provides enough data hiding bit-rate, the right frame is exactly recovered, too. The validity of the proposed approach is investigated and experimental results are provided.