Visioneer ONETOUCH - FOR WINDOWS, Руководство пользователя

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Right-click on the BMP icon to access the GIF and PNG image formats. When you select either of these
formats, the format panel will change the BMP icon to the selected image format icon.
Right-click on the JPG icon to access the JP2 image format. When you select JP2, the format panel will
change the JPG icon to the JP2 format icon.
BMP —The *.bmp (bitmap) format is generally used when you want to do additional image pro-
cessing, such as photo touch-up or color correction, as very little image compression is used when
creating the file. When scanning in color or grayscale, BMP scans result in the largest file size of
the image formats.
GIF —The *.gif (graphics interchange format) format is generally used when putting images on a
website or server, as image compression can reduce the file size by approximately 95% when com-
pared to a BMP file of the same image. Company logos and small pictures on a webpage are often
GIF images. The GIF compression, and limited color range, can result in the medium and large
images looking grainy or pixilated.
PNG —The *.png (portable network graphics) format is another common image format for web-
site graphics. Like GIF, the PNG compression greatly reduces the file size when compared to a
BMP file of the same image. However, the PNG compression is different from GIF compression
in that PNG images look better when scaled. Therefore, PNG is often used in place of GIF for
company logos with a lot of detail, clickable buttons, medium sized pictures, and so on.
TIFF —The *.tif (tagged image file format) format is another image type that is often used for
photo editing. When scanning in color, it produces a file of similar quality and size to a BMP file.
However, when scanning in Black & White, the TIF compression produces the smallest file size of
all the image types without losing image quality. TIFF also supports multi-page image files.
JPG —The *.jpg (joint photographic experts group) format is a common image format for trans-
ferring pictures electronically, such as posting to a website or sending via email, as JPG image files
are smaller than BMP and TIFF files. You can change the level of compression for the picture file
to have better quality or a smaller file size.