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a digital file. By making these adjustments before scanning an image, you can save time and file size. Scanners are produced by a number of manufacturers. Scanners used in Navy imaging facilities are produced by Nikon and Kodak (fig. 3-7). an interface. Because of the enormous amount of data involved in electronic imaging, information is passed through a SCSI. permits a number of peripheral devices to be connected to the computer through a single SCSI port. This is accomplished by chaining the devices together with a SCSI cable. The last device in the chain must have a special adapter, known as a terminator. Some devices have built-in terminators. connected, you must verify that none of the peripherals have the same identification number. These identification numbers may be changed by using either dipswitch settings or software. once it is in the computer. The second program is a driver that acts as a translator between the scanner and the paint program. Once the image is digitized, to the image. storage space is required. It is common for a 24-bit color image to require 20 to 25 megabytes of storage. computer platforms in use for digital photography--the Apple Macintosh, PCs (IBM or compatibles), and Unix-based machines. The most popular computer for and IBM compatibles are also used for digital imaging. They are becoming more popular in the digital-imaging marketplace. Unix-based workstations are used for science-oriented operations and high-volume publishing of books and technical manuals. Therefore, imaging facilities. Specific computer systems are not covered in this 32Mb of RAM. Storage may also become a problem because of the large-size file of color digital images. A high-resolution scanned image can require 250 megabytes or more of memory. A hard drive in excess of 600Mb is not uncommon for an electronic-imaging workstation. peripherals, such as scanners, film recorders, and printers. A number of interface cards are available for both Macintosh and PCs that convert analog images to digital format. images. Computer software (programs) makes it possible for you to communicate with the hardware. Advanced Photography Course |
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