<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML DIR=ltr><HEAD></HEAD><BODY>
<DIV id=idOWAReplyText22038 dir=ltr>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2>I've spent a great deal of
money trying to find the best solution for georeferencing my scanned charts
without much luck. I'm hoping someone on this list may have a better
solution..</FONT></DIV></DIV>
<DIV dir=ltr>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I scan 47 charts every 56 days, I have about 2 days
to get these georeferenced out out the door. Each chart has lat/lon lines
and I have all the projection info for them. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What I have done so far:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Global Mapper:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This is a very good package, but takes about 1/2 an
hour to rectify a scan chart, doesn't have any options for what math it uses
when generating the Georeferenced chart, so the edges fall off sharply if you
can not get the edges rectified close enough. Also, takes FOREVER to
generate a GeoTIFF! anywhere from an hour to 1.5 hours. I though it
was may machine, so I built a box with the latest and greatest AMD CPU I could
find ($1200 ouch!), put 2GB's of fast RAM in there and a 300GB 7500RPM drive
with a dual monitor graphics card. Still takes an hour or more..
ARGH!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>ESRI ArcGIS 9.1</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Tried rectifying a chart in ArcMAP, was VERY fast
and easy. Lets me choose what methode it uses to calculate the reference
points. Only problem is, you can't export a GeoTIFF in any resolution
other than screen resolution.. And I then have to go back and add the
coordinate system to each chart. Tried writing VB code using ArcObjects to
export, but still having problems exporting (mainly the extends).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I found a photshop plugin from another company that
lets you georeference charts in PhotoShop CS, but ARGH! Way to difficult,
and lacks the ability to bring in another chart as a reference.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Anyone know of something better that I can use to
speed up this process? I haven't tried Manifold yet (no eval
version). Or better yet, does anyone offer plugin's for ArcMAP
that will solve me problems?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dennis</FONT></DIV></DIV></BODY></HTML>