[Taxacom] BHL survey: scan quality

Karl Magnacca kmagnacca at wesleyan.edu
Sat May 8 14:40:24 CDT 2010

Neal Evenhuis wrote:
> Internet Archive (http://www.archive.org) has all of the BHL
> documents (since they are sent there from BHL nodes for compression
> and pdf-ing, etc.) and also has these documents in various formats.
> When one googles a particular book title, a link to the document on
> the Internet Archive site comes up. When you are there, your book
> defaults to the scanned text file, but the navigation box to the
> left has all the file formats available. One of these is b/w mode
> for pdfs.

The rendering speed is better, but the visual quality is still poor
due to the low contrast, at least on the ones I've downloaded.  On
the other hand, if they're derived from jp2 files it seems like it
would be simple to crank that up before pdf conversion without
redoing everything.

BTW, one gripe I had with IA was that where there was a Google Book
version, the link never worked.  It always went to GB itself, which
didn't have a link to the pdf.  But if you copied the .djvu link
from IA and replaced the extension with .pdf, that gave you the
file.  Weird.

Karl Magnacca
Postdoctoral Researcher
University of Hawaii-Hilo

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