Robert:

The enhancement algorithm was changed from 6.3 to 6.4 in response to some
people (including some on this list) who wanted to default to showing as
much faint stuff as possible in the initial display. This was to allow
finding faint objects quickly. You can change the default enhancement by
changing the parameters in the [Display] section of the pictor.ini file:

DisplayLowPercent
DisplayHighPercent
ThresholdLowPercent
ThresholdHighPercent
ThresholdRangePercent
RangeCheckMinimum

If you make the DisplayLowPercent equal to the ThresholdLowPercent and
the DisplayHighPercent equal to the ThresholdHighPercent then the other two
parameters do not matter. To get back to the previous enhancement I would
suggest changing the low parameters to about 1.00 and the high to about
99.00 and see if this helps with your default display.


I am more concerned with your comment that using the arrow keys makes the
image all white. Does this happen with pressing a single key?? Are you
using 12 bit, 14 bit, 16 bit or 8 bit images??

Thanks,
Ralph





Robert Exon wrote:

> To anyone who is using Pictoveiw 6.4,
> I just installed Pictorveiw 6.4 and veiwed some images taken with an
> earlier version. All the images and dark frames have hot pixels twice as
> big as before. It looks like nearly 2/3 of the images are covered with
> big white specks. These images were no longer than 180 seconds with a
> temperature of -10. The fix hot and cold pixels has no effect. Using the
> arrow keys to adjust the image just turns it white with no way to fix
> it. How many hot pixels should there be on an exposure of 180 sec.
> Also, am I doing something wrong when I process the images? It seems as
> though the version 6.3 worked better.
> Thanks,
> Robert

View index by [date] [author] [subject]
Previous message: Re: [M]: red screening [OT], Paul Goelz
Next message: Re: [M]: red screening [OT], David W. Bonnell
Previous message in thread: [M]: 216xt Hot Pixels, Robert Exon