distance between parallel lines

[Jonathan Abbott]

Is there a plugin or other way to easily measure the distance between parallel features? I often look at periodic arrays of lines that *should* be the same width. Since the edge of the lines has some roughness to it I would like to be able to draw parallel lines to get an "average" edge position and have ImageJ (or plugin) give me the distance between the two lines.

Jonathan Abbott
[hidden email]
[phone]
Associate Scientist
X-Ray Windows Engineering
[moxtekLogo]<http://www.moxtek.com/>


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[Michael Doube-4]

Hi Jonathan
> I often look at periodic arrays of lines that *should* be the same width.

What does the periodic array look like in Fourier space (i.e. after FFT)?

You might be able to use that to measure your 'average' period.

Michael




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[Michael Schmid]

Hi Jonathan,

difficult to understand the problem without a sample image.  I guess that the company logo that came as an attachment is not the type of image you want to analyze ;-)

If you draw two parallel lines by hand, it is rather elementary geometry to calculate their distance from the coordinates of their end points - is that what you are looking for?

Michael
________________________________________________________________
On Oct 14, 2013, at 23:07, Jonathan Abbott wrote:

> Is there a plugin or other way to easily measure the distance between parallel features? I often look at periodic arrays of lines that *should* be the same width. Since the edge of the lines has some roughness to it I would like to be able to draw parallel lines to get an "average" edge position and have ImageJ (or plugin) give me the distance between the two lines.
>
> Jonathan Abbott

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