WARNING:
    All TIF's in this zip file are encoded as group-4 TIFF files.
    Not all software that claims to support TIFF can actually read
    group-4 TIFF.  This format was chosen because it compresses
    to about half the size of either GIF or PNG for these files.

Converting this chapter to electronic format posed some problems.
Usually I scan documents at 300 dpi, 1bpp, then OCR it, reformat
things in word, and rescan any continuous-level photos in gray-
scale.

However, except for the first page of the chapter, there is little
regular text to OCR.  Line art typically is best scanned at 300 dpi,
1bpp and saved as group 4 TIFF format.  I'd normally insert this
into the Word document, then when the whole mess was done, I'd save
it to a PDF file.

That didn't work this time.  First off, many of the schematic pages
have a halftoned background image that gave the scanner fits, due
to aliasing during sampling.  So instead I scanned it as 8bpp gray
scale at 150 dpi, with descreening at 133 lpi (I don't know what
the optimal approach is, I'm just describing what I did).  I then
messed with the brightness/contrast with photoshop, and saved each
page as a JPEG with 50% quality level to keep the file size down.

For some reason, this time even the pages with simple line art didn't
convert to PDF very well.  The raw files are around 5.5 MB of images;
pasting all of this into Word results in a .doc file of about 6.5 MB;
converting this to PDF without downsampling the images results in a
file size of 32MB!  (and the images still don't look as good as the
originals).

So, instead, here is a simple ZIP file containing the group-4 TIFF
images for the pages where that made sense, and JPEG files for the
others.  The only exception is "index.txt", which is the chapter
index page for the chapter.

Oh, one more thing, the pages themselves are actually something like
22x11"; all pages but one only use about 16"x11" of that.  My scanner
isn't big enough for that.  Instead, I copied all of the pages on
a xerox machine at 73% maginfication, such that it would fit on an
8.5" x 11" page, then scanned that at 300 dpi.  For the big schematic
pages, I actually scanned the original in two passes (three in one
case) and used photoshop to try and line up the two passes into one
image; the seam is pretty hard to miss, but it is good enough.

The pages as they appear in the original should be:

      i) index.txt
      1) x-1.tif
      2) x-2.tif
      3) x-3.tif
      4) x-4.tif
      5) x-5.tif
      6) x-6.tif
      7) x-7.tif
      8) x-8.tif
      9) x-9.tif
     10) x-10.tif
     11) x-11.tif
     12) x-12.tif
     13) x-13.tif
     14) x-14.jpg
     15) x-15.jpg
     16) x-16.jpg
     17) x-17.jpg
     18) x-18.jpg
     19) x-19.tif
     19) x-19.tif
     20) x-20.jpg
     21) x-21.jpg
     22) x-22.jpg

Jim Battle -- 1/21/02

