In this paper. the deficiency of Schur decomposition (SD) for image watermarking has been comprehensively investigated. A remedial scheme is developed not only to fix the existing problems but also to reinforce the performance in robustness and imperceptibility. This scheme starts with partitioning the host image into non-overlapping blocks of 4 × 4 pixels and then applying SD ... https://www.fitnessgravesyardes.shop/product-category/silicone-keypad/