http://imagej.273.s1.nabble.com/measure-length-of-many-parallel-lines-tp5002827p5002829.html
Try using a linear Hough Transform to detect the lines. There is one in
> Hi,
> We have images with many more-or-less parallel lines. We can measure the
> spacing with FFT, but is there a way to measure all their lengths? (and/or
> the distribution of) Either if there is a function that could do this, or
> if
> I could write a plugin/macro?
>
> We're looking for a software solution to extract the numbers since
> measuring
> them by hand, one at a time, could be subjective (because we know what the
> theory says), plus there will be many hundreds of them...
>
> I've appended an example image, just to give you an idea of what I'm
> talking
> about. Others might have several, smaller areas with similar lines (but if
> need be we could crop them...)
>
> Cheers!
> R
>
> <
http://imagej.1557.x6.nabble.com/file/n5002827/isoPP.png>
>
>
>
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