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wanglongqi / pdf2djvu

Automatically exported from code.google.com/p/pdf2djvu
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The size of DjVu output is much larger than PDF input #96

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?

1.Download e.g. http://teksty.klf.uw.edu.pl/3/7/aaspzpE.pdf
2.Call pdf2djvu aaspzpE.pdf -o aaspzp.djvu

What is the expected output? What do you see instead?

I expect the DjVu file to be smaller.

-rw-r--r-- 1 jsbien jsbien 1.2M Oct 12 19:42 aaspzp.djvu
-rw-r--r-- 1 jsbien jsbien 625K Oct 12 19:40 aaspzpE.pdf

What version of the product are you using? On what operating system?

Package: pdf2djvu
Version: 0.7.17-4

Debian Release: jessie/sid

Please provide any additional information below.

The foreground/background separation seems perfect.

Original issue reported on code.google.com by jsb...@mimuw.edu.pl on 12 Oct 2014 at 6:05

GoogleCodeExporter commented 9 years ago 
That's 7KB/page, which is not that bad.
The djvu(1) manpage says that “a typical 300 dpi page in DjVuBitonal occupies 
5 to 25 KB”.
I'm more intrigued how come the PDF is so small.

Original comment by jwilk@jwilk.net on 12 Oct 2014 at 9:15

GoogleCodeExporter commented 9 years ago 
Sorry, I've forgot the PDF is digitally born...

Original comment by jsb...@mimuw.edu.pl on 13 Oct 2014 at 8:25