Remove Background

Posted by kavanaa1 on May 14, 2016; 2:51pm
URL: http://imagej.273.s1.nabble.com/Remove-Background-tp5016440.html

Hi,

I've a couple thousand JPEG image slices of metal samples - I want to remove the black background from the slices so when I view in 3D viewer I am just seeting the specimen. How can I do this in Image J? Threshold manager doesnt seem to be working for me, the way I am using it.

Thanks