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

Posted by David Randell on Aug 27, 2008; 4:16pm
URL: http://imagej.273.s1.nabble.com/Set-Threshold-records-incorrect-values-16bit-images-Ubuntu-tp3695217p3695221.html

> Finally, David Randell 's question :
> Thank you my friend ! Now I am not the only one in the world who witnessed
> the bug. :)
>  

Yes I thought you would be happy to see you are not the only one to
witness this bug...
> You met the problem when repeating 'set' and 'ok' : yes, I also meet the
> problem doing so. But it may also appear at the first try, or even buy
> changing the values every time.
>  

Yes sometimes it appears to happen immediately, other times after
several tries.
> You say that the values change arbitrarily ; I would be interested if you
> told how. In my case, it always decreases. For instance, 107 becomes 9 and 9
> becomes 0 and 0 stays at 0.
>  
I logged the min/max settings returned repeating Set and OK using your
image:

97,768
97,768
5,255
84,255
0,64
84,64
0,0
0,-31
.
.
.

I cannot make much sense to this... You can see when a value reaches 0,
it does not necessarily remain 0.
> Last thing : when the values change, is the image displayed in coherence
> with this change ? In my case yes.
>  

Yes that is right, when the settings in the threshold window change, so
does the image in agreement with this.

Dave Randell