Re: Lenght measurement

Posted by Leon Espinosa-3 on Jan 18, 2016; 12:25pm
URL: http://imagej.273.s1.nabble.com/Lenght-measurement-tp5015403p5015407.html

Maybe there is a different approach: as you have a kind of bend rectangle we can assume that Area = width x length . By thresholding/segmentation you can have a good measure of the area. And maybe you can manually measure 3 or 5 "widths" and calculate a mean width. Now a stimation of the length will be Area/meanWidth . With Feret or distance maps you can have an automatic and precise measure of the mean width.

All the best,

Leon


Le 18 janv. 2016 à 11:19, Alexander V. Kalachev a écrit :

> Dear ImageJ users,
>
> for our current project we need to measure length of spermatozoa nucleus. It is curved in shape
> (see example image attached, nucleus outlined with white dashed line) and we have no idea how to
> measure its length. Could anyone provide us with an advice how to measure the length of such curved
> figure?
>
> With kind regards,
> Alexander
>
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> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> <example.png>

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