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Traitement du signal
Image steganography hides secret messages in cover images by manipulating their content. There is a fundamental requirement of maximizing secrecy and payload capacity. This paper presents a novel algorithm for achieving two layer security as well improved payload capacity by prepossessing the secret images before hiding it in a cover image. The secret image is divided in to small windows of fixed sizes and is searched from a database of 255 images. Each window of secret image is replaced by thedoi:10.18280/ts.370117 fatcat:d6rsspppivhdfar4voagmb7toi