电子科技女学光电科学与工程学院 SCHOOL OF OPTOELECTRONIC SCIENCE AND ENGINEERING OF UESTC 4.Measuring Image Information Example: 4收 5,4,⅓，⅓ HP(a,)losP(@,)-2  4 1 7 log 4 j j j H Pa Pa     1234 1111 248 8 ,,, ,,, aaaa A        Example: 4. Measuring Image Information