Simple Image File Formats PPM Format 计算机科学

Chapter 2Simple Image File Formats2.1 IntroductionThe purpose of this lecture is to acquaint you with the simplest ideas in image file format design, and to get you ready for this week’s assignment - which is to write a program to read, display, and write a file in the PPM rawbits format.Image file storage is obviously an important issue. A TV resolution greyscale image has about 1/3 million pixels – so a full color RGB image will contain 3×1/3 = 1 million bytes of color information. Now, at 1,8