Blurred thumbnails - where is sharpening?

Ask for help and post your question on how to use XnView MP.

Moderators: XnTriq, helmut, xnview

Post Reply
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Blurred thumbnails - where is sharpening?

Post by mrwul »

Noticed that large thumbnails are blurred, vainly tried to find settings that will sharpen the thumbnails.
Q: where can I find it?


Meanwhile, I went into Settings->Browser->Catalog->db settings
Noticed a LOT, I mean a LOT of folders in the 'cached directory'.
[Delete All] button (at the bottom) didn't work. I could delete some cached folders of non-existing paths (paths to disconnected external USB drives)
There are sooo many folders still left under 'Cached Directory' - I would not know whether or not they all exist.
Anyway I clicked on 'Rebuild thumbnails' and it will take (quite) a while to do so.
Not sure whether that is the solution though.

attachment shows a preview by Directory Opus (left) and XnViewMP latest version, right.

=
http://www.xnview.com/mantisbt/view.php?id=56
http://newsgroup.xnview.com/viewtopic.php?f=60&t=28595
=
SnagIt-04062016 062330.png
=
User avatar
xnview
Author of XnView
Posts: 43326
Joined: Mon Oct 13, 2003 7:31 am
Location: France
Contact:

Re: Blurred thumbnails - where is sharpening?

Post by xnview »

please check Settings>Catalog>WidthxHeight
Pierre.
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Re: Blurred thumbnails - where is sharpening?

Post by mrwul »

xnview wrote:please check Settings>Catalog>WidthxHeight
? Okay, but then what?
cday
XnThusiast
Posts: 3973
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: Blurred thumbnails - where is sharpening?

Post by cday »

mrwul wrote:
xnview wrote:please check Settings>Catalog>WidthxHeight
? Okay, but then what?
A Compression setting that results in sharper thumbnails: Lossless (ZIP) or a higher quality Lossy option ??
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Re: Blurred thumbnails - where is sharpening?

Post by mrwul »

It is set to 'None

=
SnagIt-06062016 130008.png
SnagIt-06062016 130008.png (9.93 KiB) Viewed 2025 times
=
set to lossless zip and also tried high quality jpeg
does not make any difference
(closed and relaunched XnViewMP in between)

=
SnagIt-06062016 130310.png
=
cday
XnThusiast
Posts: 3973
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: Blurred thumbnails - where is sharpening?

Post by cday »

mrwul wrote:It is set to 'None
...
set to lossless zip and also tried high quality jpeg
does not make any difference
(closed and relaunched XnViewMP in between)
And you clicked on Rebuild thumbnails ?

Ah, you asked originally about sharpening, and I see that in XnView MP that option can be found in Tools > Options > Browser > Thumbnails -- Misc tab :idea:
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Re: Blurred thumbnails - where is sharpening?

Post by mrwul »

cday wrote:
mrwul wrote:It is set to 'None
...
set to lossless zip and also tried high quality jpeg
does not make any difference
(closed and relaunched XnViewMP in between)
And you clicked on Rebuild thumbnails ?

Ah, you asked originally about sharpening, and I see that in XnView MP that option can be found in Tools > Options > Browser > Thumbnails -- Misc tab :idea:
Yes, I clicked rebuild.
As for sharpen, that has been 'set'

=
SnagIt-07062016 114117.png
=
cday
XnThusiast
Posts: 3973
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: Blurred thumbnails - where is sharpening?

Post by cday »

And you still have blurred thumbnails?
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Re: Blurred thumbnails - where is sharpening?

Post by mrwul »

Yes, regretfully so. I can submit another examples, but they are 'big' and I am not sure Pierre agrees to that.

=
cday
XnThusiast
Posts: 3973
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: Blurred thumbnails - where is sharpening?

Post by cday »

Does selecting Sharpening have a visible effect, could it be that it isn't operaring correctly?
mrwul wrote:I can submit another examples, but they are 'big' and I am not sure Pierre agrees to that.
Is the problem possibly confined to large images, which might require a different sharpening setting??

The current forum upload limit is 2MiB, but you could upload larger files to a file hosting service and provide a link, or if necessary send an example to Pierre as an email attachment at the xnview contact address on the home page...
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Re: Blurred thumbnails - where is sharpening?

Post by mrwul »

I had this example on imgur
it would be nice to have this displayed as thumbnail and ONLY once a user clicks on it, it will be displayed full screen.

Left Directory Opus, right XnViewMP

=
Image
=
(sorry pierre)
mrwul
Posts: 327
Joined: Tue May 25, 2010 7:01 pm

Re: Blurred thumbnails - where is sharpening?

Post by mrwul »

That aside, I again started 'rebuild thumbnails' and I noticed that some thumbnails are sharp now.
Rebuilding takes quite some time and it is rebuilding thumbnails (at least it looks that way) of a lot of folders, outside the 'Base path of your pictures'
(settings-browser-catalog)
I mean: I have X:\JPG there (example)
in cached directory it showes e.g. X:\Photos D:\Downloads C:\Users etc.

=
bump
=
Post Reply