Avision FB6080E (DT-0602S) User Manual

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4.3

THE COMPRESSION TAB

The Compression tab allows you to compress your scanned
image and choose the level of compression. Bi-tonal
images are normally compressed using CCITT standard
called Group 4 (G4). Color and grayscale images are often
compressed using JPEG technology. Move the JPEG
Quality slider to the right or left to increase or decrease
the level of compression. Note the greater the compression
level, the lower image quality. Default is 50%.

Note that the compression depends on your image editing
application. If your image editing application does not
support the type of compression format, then either a
warning message will appear or the image quality of the
compressed file will not be acceptable.

JPEG (Joint Photographic Editor Group). This group

developed and lent their name to a file compression

standard for color and grayscale images that is widely used

by scanners, and software applications. On Microsoft

Windows-based systems, a file with the extension .jpg has

normally been compressed using this standard.

For scanning color or gray images, the following

compressions are available:

None

JPEG

For scanning B&W images, the following compressions are

available:

None