[Mott] [New Logentry] ImageJ has edge detection and more...

[Marcy Stutzman]

ImageJ can be downloaded for windows or anything at: http://imagej.nih.gov/ij/download.html

and there are decent tutorials online - 

http://serc.carleton.edu/eyesinthesky2/week2/index.html

I have a measurement of the thicker foil, 10 random spots (I should distribute them more carefully, but this is a start), with average thickness 0.788 micron +/- 0.019 for the distribution I took. 

Min 0.772, max 0.821. 

The flat side will be the side against the substrate, the bumpy side the side away most likely, and could be real bumps or wrinkles. 

The tear marks seem very neat - the edge will be somewhat deformed when you cleave a wafer with the foil stuck to it, but we seem to have a crisp enough edge to measure. 

Marcy

----- Original Message -----
From: "Joe Grames" <grames at jlab.org>
To: "mott" <mott at jlab.org>
Sent: Wednesday, January 28, 2015 10:40:03 AM
Subject: [Mott] [New Logentry] ImageJ has edge detection and more...

ImageJ has edge detection and more... 


Lognumber 3318700 . Submitted by grames on Wed, 01/28/2015 - 10:39. 

Last updated on Wed, 01/28/2015 - 10:39 Logbooks: 	MOTTLOG 
Entry Makers: 	grames 


I noticed that ImageJ is running on the Ops computers so I loaded a JPEG image from my desktop of an injector solenoid. I tried the Process=>Find Edges which seemingly works quite well. In fig. 1 all of the steel edges and particularly the text edges are revealed. 

What a nice tool. 

Next, I downloaded one of Mamun's FESEM images of the 0.75 um foils (fig. 2) and applied edge detection. While one can estimate foil thickness in pixels from fig. 2 it may turn out to be systematically more robust to do from fig. 3, e.g. once we learn how to use additional processing features... 

Some of the interesting features to discuss and explain are ... smooth upper edge, the edge ~middle of foil, the lumpy bottom edge. 

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