General Access Structure Based Region Incrementing Visual Cryptography Scheme by XOR Operation

In order to optimize the performance parameters of region incrementing visual cryptography. A novel XOR-based region incrementing visual cryptography scheme is proposed. At first, an adaptive region assignment algorithm is designed. Then, the encode matrices of single secret sharing visual cryptography are constructed. Furthermore, the procedures of secret image sharing and recovering are designed. Finally, a scheme is realized. Experimental results show that the proposed scheme is suitable for general access structure, and further enriches the application scenarios. Moreover, it has no pixel expansion, and the storage and transmission cost of shares can be decreased efficiently. Meanwhile, the reverse color distortion problem is solved, the white pixels of secret image can be recovered perfectly and the relative difference is also enhanced. Therefore, the visual performance of secret image can be improved effectively.