Hi,

Lots of answers! Cheers to all... original question and summation
follows...

Regards,
GREG...

----------------------------------------------------------------------------------------

ORIGINAL QUESTION:

  Hi,

  Just a quick question. Is there an application in the ESRI-sphere that

  will allow me to 'rubber sheet' non-orthorectified images so that they

  are? (i.e., based on a series of known coordinates for known locations

  on the image.)

  AutoCAD Overlay is $1,375 and for that money I may as well get a more
  GIS-orientated product.

  TIA!
  Greg...

---------------------------------------------------------------------------------------

SUM:

  - if you have Spatial Analyst, Jeffrey Lindhorst suggested the
extension ImageWarp, as did Nicholas Lindenberg - it is by Kenneth R
McVay and can be found at Arcscripts (an older version does not need SA)

  - Nicholas also suggested ArcInfo's Register and Rectify commands

  - Alan Shriver suggested ShapeWarp off the ESRI support page but
confirmed Image Analyst as a better solution

  - Robin Tamasi and Alan  said spending $500 for RasTools
(http://members.aol.com/MapTools/) would give an excellent 'value for
money' result

  - Catriona Dryden and Susan Zwillinger suggest ERDAS Imagine as the
sledge hammer to do all of this work to the best accuracy

  - Gregory Slater, Nicholas, etc suggested  Image Analyst as the ESRI
solution of preference - but with the cost... Susan Zwillinger notes
that IA will not do true orthorectification, but can rectify, warp and
'rubber sheet' - with a better result if the terrain is flatter

  - Bob Johnson suggests the package 'The Engine 2' will do this and
much more (http://www.rmjohnsoncompany.com/BobsPlace/engine/)