Chapter 22. Scanners

The scanner is a science-fiction aficionado's dream, a device that shifts between dimensions. It takes three-dimensional objects—your artwork, pages from books and magazines, even small objects such as coins—and reduces them to two-dimensional images by looking at them one dimension at a time. Without a trace of the alien technology or the supernatural, the scanner converts images you see in the real world and hold in your hand into the flatland of graphics, ready to adorn your documents or edit into arresting artwork.

The essence of any scanner is elementary. As you would expect, it scans. That is, it uses a long array of light sensors to scan across whatever you put into its range of sight. Each light sensor detects the ...

Get Winn L. Rosch Hardware Bible, Sixth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.