IP04-Robust Coverless Image Steganography based on DCT and LDA Topic Classification

ABSTRACT: So as to enhance the robustness and capability removing steganalysis, a novel coverless  steganography algorithm based on Discrete Cosine Transform and Latent Dirichlet Allocation point classification is proposed. Firstly, the LDA point model is used for characterizing the image database. Also, the images have a place with one topic are chosen, and 8×8 block DCT […]