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This section
explains three commonly used Bitmap-based
file formats, *.JPG,
*.GIF, and *.TIF.
*.GIF
is a commonly used image format for Internet graphics. It limits
the number of colors used in an image to a maximum of 256, thus
reducing its color depth. As an image
being converted to the *.GIF format, all the colors within the image
would be forced to best match the 256 index colors pre-determined
by your computer's operating system. This format is most suitable
for images with few solid colors such as icons but are less suitable
for photo-realistic images due to its limitation in colors.
*.JPG
file format is another commonly used image format for Internet graphics
and for sending pictures as attachments via e-mail. This file format
is suitable for displaying photo-realistic images because it does
not limit the number of colors used any given image.
*.TIF,
another bitmap-based file format, is commonly used in image editing
software. Picture Publisher and iPhoto, the two image editing software
that come with Mustek scanners, use this file format as their default
file format for saving scanned images. This format generally does
not compress the size of the image file significantly unless the
image is scanned in Line Art Mode.
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