电子科发女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC Outline ◆ Background ◆Fundamentals Some Basic Compression Methods Digital Image Watermarking' 河Outline  Background  Fundamentals  Some Basic Compression Methods  Digital Image Watermarking*  Background  Fundamentals  Some Basic Compression Methods  Digital Image Watermarking*