Visual image encryption scheme based on BTC and LSB modification

With the rapid development of Internet technology, information security issues have become an important guarantee for society. Image encryption technology can achieve security by converting images into other unrecognizable formats. Many existing visible image encryption methods are not highly visual, which not only causes the leakage of important image information, but also easily causes a waste of resources. In order to solve this problem, this paper proposes a new visual image encryption scheme based on BTC compression. The original image is protected by converting the original image into other formats that ordinary users cannot recognize to achieve the security level required by the user. The experimental results show that the proposed scheme is not only simple and convenient, but also has excellent performance in terms of compression rate and visual distortion. It has been widely used by many researchers.