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Re: Image Geometric CorrectionDavid Bailey,

  • To: mathgroup at
  • Subject: [mg54124] Re: Image Geometric CorrectionDavid Bailey,
  • From: David Bailey <dave at>
  • Date: Fri, 11 Feb 2005 03:33:37 -0500 (EST)
  • References: <cuf576$glt$>
  • Sender: owner-wri-mathgroup at

flyonair wrote:
> I have a satellite image that it is distorted and also a map (correct)
> that must be used in order to define control points in the image and
> use them in order to aplly spatial transformation to the image.
> How can I define my control points in the image...I mean to click on
> them with the mouse and get the coordinates?(The coordinates must be
> pixel values)
> If anyone can help....
If you display a graphic with GUIKit you can get coordinates back in 
pixel coordinates - which may be what you want, although if the image is 
scaled to fit the widget.....
I have been exploring ways to display 2-D Mathematica graphics objects 
in GUIKit, and convert mouse click coordinates into Mathematica graphics 
coordinates. I have a mechanism, which is incorporated in my 
SuperWidgetPackage. This works well for me, but not for some others - so 
there are obviously still some issues to be ironed out. Please look at 
my website for more details, and maybe contact me directly.

David Bailey

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