TY - JOUR AU - Samadi, Reza AU - Seyedin, Seyed Alireza TI - Security Analysis of Scalar Costa Scheme Against Known Message Attack in DCT-Domain Image Watermarking JO - Journal of Information Systems and Telecommunication (JIST) VL - 2 IS - 8 SP - 1 EP - 10 PY - 2014 DO - 10.7508/jist.2014.04.006 ER -