Is there a way/plugin to do the following thing?

[john]

Hi all,

I am new to ImageJ. I have to solve a typical image analysis problem I would like to take the help of ImageJ

Please refer the following image,


My aim is to measure the area fraction of the big thick solid black laths. ( lets call it alpha). I completely want to avoid the white region ( seen in between alpha, lets call them beta) and the small lath structures seen inside beta. Right now I  manually cut those region as shown below
(some area is left) and convert it to binary image to measure the area fraction.
Is there a way to automate to process to avoid the small black laths inside beta and paint it while ??

Thanks in advance.
John

[edsimmons]

john wrote

Hi all,

I am new to ImageJ. I have to solve a typical image analysis problem I would like to take the help of ImageJ

Please refer the following image,


My aim is to measure the area fraction of the big thick solid black laths. ( lets call it alpha). I completely want to avoid the white region ( seen in between alpha, lets call them beta) and the small lath structures seen inside beta. Right now I  manually cut those region as shown below
(some area is left) and convert it to binary image to measure the area fraction.
Is there a way to automate to process to avoid the small black laths inside beta and paint it while ??

Thanks in advance.
John

Hi John,

Click Plugins -> New -> Macro
then try running this:

setAutoThreshold("Default");
setThreshold(91, 251);
run("Convert to Mask");

Hope that helps!

Best,
Ed