List of Articles Watermarking Open Access Article Abstract Page Full-Text 1 - Providing an Image Watermarking Scheme Based on Chaotic Sequence and Cosine Transform, to Strengthen Interaction with a Variety of Software Attacks Mostafa Boroumandzadeh Open Access Article Abstract Page Full-Text 2 - Proposing a New Image Watermarking Method Using Shearlet Transform and GWO Algorithm Mahdi Saadati Javad Vahidi Vahid Seydi Peyman Sheikholharam Mashhadi Open Access Article Abstract Page Full-Text 3 - A Modified Digital Image Watermarking Scheme Basedon Nonnegative Matrix Factorization Open Access Article Abstract Page Full-Text 4 - A Robust Digital Image Watermarking Scheme Based on DWT