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

Posted by David Randell on Aug 27, 2008; 5:08pm
URL: http://imagej.273.s1.nabble.com/Set-Threshold-records-incorrect-values-16bit-images-Ubuntu-tp3695217p3695242.html

Gabriel Landini wrote:

> On Wednesday 27 August 2008, Ghislain Bugnicourt wrote:
>  
>> I tried the 1.40 and the 1.41j version of ij.jar on my computer, both
>> enable the bug.
>>    
>
> I keep trying but it does not happen here...
>
>  
>> I don't know what you call the "slider resolution", but if it is what I
>> referred to as "the numbers available with the scrolling bars", then I can
>> affirm (in opposition with what I claimed before) that the bug may appear
>> in both cases : whether you chose a number available, or not available in
>> this 'scale'.
>>    
>
>
> Try starting IJ with the -Xint switch and try again.
> Something like:
>
> ./jdk1.5.0_15/bin/java -Xmx1800m -Xint -cp
> ij.jar:jimi.jar:./jdk1.5.0_15/lib/tools.jar ij.ImageJ
>
> (all in one line and of course adjust the location of the jdk files). This
> will switch off the JIT compiler (it will run slower, but you will then see
> if it solves the problem).
>
> Very odd...
>
> G.
>
>  

Hi Gabriel,

No this switch does not solve it. Its very strange behaviour, as the
values returned by repeating the Set and OK commands to the Threshold
window seem to follow no obvious pattern. I've tried it several times
now and every time I seem to get a different sequence of values returned
using the same image on the same platform.  Very odd...

Dave Randell