P. Mohan Kumar  , D. Roopa  , 
    An Image Steganographic Framework with Improved Tamper Proofing,
    Asian Journal of Information Technology,
    Volume 6,Issue 10,
    2007,
    Pages 1023-1029,
    ISSN 1682-3915,
    ajit.2007.1023.1029,
    (https://makhillpublications.co/view-article.php?doi=ajit.2007.1023.1029)
    Abstract: This study presents a typical image steganography method that utilizes a block-matching procedure to search for the highest similarity block for each block of the important image. The bases and indexes obtained together with some not-well-matched blocks are recorded in the least significant bits of the cover image using a hop scheme. The method exhibits a high data payload, which reduces the storage and transmission-time requirements and also provides a method that prevents an observer from selectively blocking the transmission of the important image. Also, in this method the degree of tamper proofing is very high, so that it is not possible for any intruder to modify the content of the embedded data in the cover image.
    Keywords: Steganography;ciphertext;SNR;digital watermarking;information hiding and cover signal;jamming margin