Visual cryptography scheme for hiding some information but displaying others

Visual cryptography scheme (VCS) was first introduced by Naor and Shamir in Euro-Crypt conference in 1994 [1]. It can decrypt secret images by using the human visual system without any computation. In the (k, n)-VCS, a secret image is encoded into n shares, which consist of some random binary patterns. Then stacking any k or more than k shares can reveal the secret image. However, if the number of shares is less than k, any information about the secret image cannot be caught.