Developing a robust digital image watermark by using frequency and spatial domains \ 2026-02-15T22:32:30+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Hassan, Wisam Ahmed (Amman Arab University, College of Computer Studies, Department of Computer Science, 2010)