• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Chapter 2. Overview > Imaging Model

2.1. Imaging Model

At the heart of PDF is its ability to describe the appearance of sophisticated graphics and typography. This ability is achieved through the use of the Adobe imaging model, the same high-level, device-independent representation used in the PostScript page description language.

Although application programs could theoretically describe any page as a full-resolution pixel array, the resulting file would be bulky, device-dependent, and impractical for high-resolution devices. A high-level imaging model enables applications to describe the appearance of pages containing text, graphical shapes, and sampled images in terms of abstract graphical elements rather than directly in terms of device pixels. Such a description is economical and device-independent, and can be used to produce high-quality output on a broad range of printers, displays, and other output devices.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint