Re: "Set Threshold" records incorrect values - 16bit images - Ubuntu

Posted by Ghislain Bugnicourt on Aug 26, 2008; 4:02pm
URL: http://imagej.273.s1.nabble.com/Set-Threshold-records-incorrect-values-16bit-images-Ubuntu-tp3695217p3695247.html

Thank you Wayne and John for your help.

 Wayne,
I meet the same problem using four java versions :  the one joined with ImageJ, sun's java 1.6.0_05, but also sun's 1.6.0_06 and 1.6.0_07, and finally the open source version, openjdk 1.6.0_0.
Nevertheless, it doesn't show that it is not a java problem. :)
I repeat (for those who are discovering this thread) that I found the bug on Ubuntu 8.04 and on an old version of Debian, NOT on Windows and Mac OS x.

 John,
When I said 'numbers not available with the scrollbars', I didn't mean outside the scale. I just meant : between the values that 'threshold' is proposing. What you described is not a bug, I agree with you.
I upload a typical image : FA1-YL.tif
On this image, please try to 'set' the lower threshold value to 107, and the upper to 500, for instance. On my computer, it works about 5 times out of 10. But I insist on this fact : sometimes it seems to work more than 10 times ! And the problem occurs in series.
Moreover, it depends on the image : on the example image M51 (16-bit), I only found the problem once out of about 100 times. That's why I uploaded my own image, to show you.

Thank you again, I 'hope' that other linux users will meet the same problem as me.
Ghislain