Avision button manager 用户手册
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DjVu:
DjVu is a new image compression technology. DjVu allows the
distribution on the internet of very high resolution images of
scanned documents, digital documents, and photographs.
distribution on the internet of very high resolution images of
scanned documents, digital documents, and photographs.
DjVu typically achieves compression ratios about 5 to 10 times
better than existing methods such as JPEG and GIF for color
better than existing methods such as JPEG and GIF for color
documents, and 3 to 8 times than TIFF for black and white
documents.
documents.
The following table gives you an idea of file size v.s. file format
To scan an A4 color image in 200 dpi,
File
Format
Format
BMP TIFF
GIF
PDF
JPEG
DjVu
File
Size
Size
10M
10M 1.3M 53KB 212KB 31KB