Correction of Secret Images Reconstructed from Noised Shared Images

Protecting sensitive images is nowadays a key issue in information security domain. As such, numerous techniques have emerged to securely transmit or store such multimedia data, as encryption, steganography or secret sharing. Most of today's secret image sharing methods relie on the polynomial-based scheme proposed by Shamir. However, some of the shared images distributed to the participants may be noised between their creation and their use to retrieve the secret image. Noise can be added to a shared image during transmission, storage or JPEG compression for example. However, to our knowledge, to date no analysis has been made on the impact of using a noised shared image in the reconstruction process of a secret image. In this paper, we propose a method to correct the errors during the reconstruction of a secret image using noised shared images.