Looking for curvature/semi-circle measurement tool

[Jarek Sacha-2]

Hello,

I am looking for a tool that could measure a curvature of a
semi-circle-like object in an image. Usage could be similar to that of the
Angle Tool but with preview display of the semi-circle, so user has a better idea about
quality of fit. Possible usage scenario: users selects 3 points, each point can
be can be adjusted while preview of the semi-circle is displayed, user selects
Analyze > Measure to send radius of the circle to the Results Table.

Is there any similar tool available?
Hints appreciated,


Jarek

[Gabriel Landini]

On Tuesday 06 Dec 2011 17:41:06 you wrote:
> I am looking for a tool that could measure a curvature of a
> semi-circle-like object in an image. Usage could be similar to that of the
> Angle Tool but with preview display of the semi-circle, so user has a better
> idea about quality of fit. Possible usage scenario: users selects 3 points,
> each point can be can be adjusted while preview of the semi-circle is
> displayed, user selects Analyze > Measure to send radius of the circle to
> the Results Table.

Maybe this can be used as a starting point:

ThreePointCircularROI (java & class files) This plugin creates a circular ROI
based on 3 user selected points on an image. The log window reports the
coordinates of the centre of the circle and its radius. Co-linear points (that
define an impossible circle) return a radius of -1.

http://www.dentistry.bham.ac.uk/landinig/software/software.html
Cheers

Gabriel