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教学目标了解计算机中图像的两种表示方法:位图和矢量图。掌握位图和矢量图的区别(失真现象)。已知分辨率,会计算各种位图的大小。了解常见的图像文件扩展名。教材重点与难点已知分辨率,会计算各种位图的大小。位图和矢量图的区别。课时安排1课时。复习引入上节课给大家介绍了计算机中信息的表示方法,如何用比特串来存储和表示数字、字母、符号等信息,以及一个重要的关系:n个比特所能表示的最多信息个数为2n个。
Teaching Objectives To understand two representations of images in a computer: bitmaps and vector diagrams. Grasp the difference between bitmaps and vector graphics (distortion). Known resolutions, calculate the size of various bitmaps. Learn about common image file extensions. Textbooks focus on difficulties and known resolutions, and calculate the size of various bitmaps. The difference between bitmaps and vector graphics. 1 class hour for class hours. The review introduced the last lesson to introduce to everyone the presentation of information in the computer, how to use bit strings to store and represent information such as numbers, letters, symbols, and an important relationship: the maximum number of information that n bits can represent is 2n.