Re: Largest enclosed convex shape to measure eggs with appendages

Posted by José María Mateos on
URL: http://imagej.273.s1.nabble.com/Largest-enclosed-convex-shape-to-measure-eggs-with-appendages-tp5004483p5004484.html

2013/8/19 Tom Kazimiers <[hidden email]>:
> On images like the one attached, I want to measure the maximum length of
> each eggshell. Those eggshells are ellipse like structures with usually
> two smaller appendages. Those, however, shouldn't be part of the
> measurement, but only the eggshell itself.

Those appendages seems to be a nice target for a morphological filter.
I've tried the follwing:

setAutoThreshold("Huang dark");
setOption("BlackBackground", true);
run("Convert to Mask");
run("Options...", "iterations=20 count=3 black edm=Overwrite do=Open");

That creates a mask that contains only the main eggshell body (a bit
distorted after the opening operation), but might be a nice starting
point.

Best,

José.

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