Obtaining 3 equal parts

Posted by Jerry Sedgewick on
URL: http://imagej.273.s1.nabble.com/Obtaining-3-equal-parts-tp3698073.html

Hello,

A lab at our university is interested in dividing images of sections
spatially (rather than functionally) into 3 parts: left, middle and right
for measurements from each part. The shapes of the sections change
dramatically from one to the next, from a circular to triangular to
boomerang shapes. The only means I could come up with for equally dividing
parts involved drawing a line through vertical axis from the centroid to
either end, and then dividing the length of the line by three to find the
x, y positions along the line for each part. The horizontal line would then
have to be manually drawn, following the "bend" of the shape.

Any other suggestions would be much appreciated.

Jerry Sedgewick
University of Minnesota