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Freehand ROIs and Bézier curves [message #47702]

Thu, 23 February 2006 15:57

Robbie
Messages: 165
Registered: February 2006

Senior Member

I've seen some commercial medical imaging workstations allow you to
draw a freehead ROI. Once drawing is finished the ROI is approximated
using what appears to be a Bézier curve. For example I might draw a
circle shape and this will be approximated by a curve with several
control points. The user can move the control points to change the ROI
after it is drawn.

I know that there are other ways to modify a freehand ROI after it is
drawn, but this way seems to be the most popular (At least for Nuc.
Med. and Ultrasound)

Is there any implementation of this in IDL?

Robbie

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