Digitize2 lets you digitize and measure distances from an image using your mouse.  You can zoom in and pan around the expanded image.  I use it to convert old technical data published in journals to a digital form as well as digitize maps.  The output is ASCII.  A DXF and IDRISI export facility is also provided. 

Digitize2 addresses the special problems inherent in this type of work.  First, it is rather easy to scan the printed material, but getting it aligned accurately is a nuisance.  Second, many scanners and certainly most zerographic reproductions are not uniformly scaled.  Therefore, Digitize2 by default corrects for rotated images and it does a linear correction for scale distortions.  Digitize2 allows the user to also edit the image.  This will be done automatically during digitizing or optionally using the various paint tools available.  This can greatly simplify keeping track of progress when working on complex imagery.  Finally, you can move digitized points, link to existing lines and generate smoothed lines using a very powerful bspline algorithm.

A simple tutorial is also provided in the file "tutorial.txt".  The image "hydrograph.gif" is used in the tutorial.

For installation instructions see Install.txt.

See ChangeHistory.txt for a list of changes.


Copyright:
You are free to use and modify the program.  Please give credit where credit is due.  I do request that where this software is used in research which leads to a technical publication please acknowledge my efforts and send me a copy or reference.  I also live by "publish or perish".  I leave the level of acknowledgement to your discretion and good professional character.  I am especially open to doing more work on the code for those willing to cooperate with this.

Doug Rickman
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