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Photo CD

When Photo CD first appeared, it seemed like one of those occasional Kodak aberrations (like the disc camera)—we thought it very unlikely that people would want to view their family snapshots on TV. We were right about the consumer market's indifference to Photo CD, but we came to recognize it as a simple and cost-effective method of acquiring and storing images. Today, we suspect that Photo CD's time has come and gone, but it's still a cost-effective method of digitizing and storing film images, though the availability of inexpensive scanners that can produce similar quality makes it less compelling than it used to be.

Through a highly ingenious compression scheme, Photo CD manages to squeeze about 120 color images, each available at five different resolutions (see Table 13-1), onto a CD-ROM. The exact number of images depends on the content; some images compress more than others.


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