Author Topic: Beam diameter / Image Resolution  (Read 7272 times)

Ben Buse

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Beam diameter / Image Resolution
« on: July 27, 2016, 04:59:48 AM »
Hi,

Inspired by Philip Gopon program to measure beam diameter

http://geoscience.wisc.edu/geoscience/research/facilities/electron-microprobe/software/

I've reproduced this for imagej. Using an SE image it will give you the beam diameter - if you measure across a sharp edge. Similarly if you measure a BSE or x-map signal across a sharp edge you get the resolution for the particular x-ray line.

I've currently set it to measure the distance between 10 and 90% intensity. But you can edit the macro script.

The script is shown below



Steps

As normal in imagej
(1) Open image
(2) Set image scale (otherwise distances in pixels)
(3) Draw line and plot profile (crtl-k)

The plugin
(4) Click on plugin.

The plugin should be stored in imagej plugin folder. Plugin attached


« Last Edit: November 13, 2019, 08:34:24 AM by Ben Buse »

John Donovan

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Re: Beam diameter / Image Resolution
« Reply #1 on: August 08, 2016, 01:35:35 PM »
I made this topic "sticky"...
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Ben Buse

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Re: Beam diameter / Image Resolution
« Reply #2 on: November 13, 2019, 08:30:55 AM »
Has anyone used David Joy's SMART marco for NIH image as described in this paper:

SMART – a program to measure SEM resolution and imaging performance

https://onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2818.2002.01062.x

Where is it available, does it work with imagej?

Thanks

Ben

Karsten Goemann

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Re: Beam diameter / Image Resolution
« Reply #3 on: November 13, 2019, 02:41:44 PM »
Hi Ben,

Yes, I have. I got it directly from David Joy in a workshop.

It doesn't run in ImageJ as is, so when I retired by last Mac still running OS9 I tried to edit the code to use it in ImageJ. But didn't have much experience with ImageJ macros so I didn't get very far. I contacted David Joy a few years back but he wasn't planning to adapt it to ImageJ.

I think Brendan Griffin's SMARTer is an adaptation of SMART for ImageJ.

Cheers,
Karsten

Ben Buse

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Re: Beam diameter / Image Resolution
« Reply #4 on: November 14, 2019, 08:58:10 AM »
Hi Karsten,

Thanks, I'll ask Brendan Griffin

Ben