Show viewing offset in image information

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yossic00
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Show viewing offset in image information

Post by yossic00 » Wed Mar 05, 2014 9:35 am

Hi,

Is it possible to add the current viewing offset (x,y coordinate of the top left pixel) to the view info?
The reason I want this is because I'd like to compare images one on top of the other so I open the images in different tabs and switch between the tabs to compare. However when using zoom I need to align offsets; it would be easier if the offsets when displayed in the info.

Thanks,
Yossi

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m.Th.
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Re: Show viewing offset in image information

Post by m.Th. » Wed Mar 05, 2014 12:01 pm

yossic00 wrote:Hi,

Is it possible to add the current viewing offset (x,y coordinate of the top left pixel) to the view info?
The reason I want this is because I'd like to compare images one on top of the other so I open the images in different tabs and switch between the tabs to compare. However when using zoom I need to align offsets; it would be easier if the offsets when displayed in the info.

Thanks,
Yossi
It is much easier to compare images by using the Compare tab. Select the images you want (2 till 4) and go to Tools | Compare...

Some commands:
--------------------
Mouse Wheel - sync zoom
Left mouse button - sync pan
Ctrl+Mouse Wheel - single zoom
Right mouse button - single pan

Also you have in the bottom part of the tab a toolbar in order display a strip of thumbnails, grid, histogram, info etc.
m. Th.

The Ascetic Experience - The best photos and texts from Holy Mountain (Athos)

- Dark Themed XnViewMP 0.88 64bit & XnView 2.00 x64 on Win7 x64 -

yossic00
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Re: Show viewing offset in image information

Post by yossic00 » Wed Mar 05, 2014 2:43 pm

Hi,

The compare tab shows the images side by side. For me it's easier to spot differences when comparing images by alternating between them so I prefer to put them on different tabs to compare. Also the compare tab doesn't let me open images from different directories.

Thanks,
Yossi

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m.Th.
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Re: Show viewing offset in image information

Post by m.Th. » Thu Mar 06, 2014 1:24 pm

yossic00 wrote:Hi,

The compare tab shows the images side by side. For me it's easier to spot differences when comparing images by alternating between them so I prefer to put them on different tabs to compare. Also the compare tab doesn't let me open images from different directories.

Thanks,
Yossi
About "open images from different directories" - you can do that by eg. using Tag box.

About the other thing: you said that "it's easier to spot differences when comparing images by alternating between them" - why that? Do you want to see where the images are different? Perhaps a XOR overlay engine which will show only the differences between files will help?
m. Th.

The Ascetic Experience - The best photos and texts from Holy Mountain (Athos)

- Dark Themed XnViewMP 0.88 64bit & XnView 2.00 x64 on Win7 x64 -

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oops66
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Re: Show viewing offset in image information

Post by oops66 » Thu Mar 06, 2014 2:35 pm

m.Th. wrote:... Perhaps a XOR overlay engine which will show only the differences between files will help?
... Yes, a good idea to compare images ...
Ex:
Image

...Edit ...
But I prefer the "before after" plugin way to compare two images (in fact both are interesting) ;-)
http://newsgroup.xnview.com/viewtopic.p ... 46#p117946
http://www.catchmyfame.com/catchmyfame- ... er-plugin/

or via imageMagick
ImageMagick can do it, although it's a bit convoluted. One way is:

Code: Select all

convert img1 img2 -fx "(((255*u)&(255*(1-v)))|((255*(1-u))&(255*v)))/255" img_out
(img1,img2,img_out are the two input and single output file names respectively).
http://stackoverflow.com/questions/8504 ... -on-images
or pdiff / imagediff
http://www.tilander.org/aurora2/Compari ... html#pdiff
Last edited by oops66 on Sat Mar 08, 2014 12:18 pm, edited 6 times in total.
XnViewMP 0.82 Linux X64 - Ubuntu 16.04 LTS - X64

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XnTriq
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Re: Show viewing offset in image information

Post by XnTriq » Thu Mar 06, 2014 7:00 pm

m.Th. wrote:Perhaps a XOR overlay engine which will show only the differences between files will help?
XOR? Pretty please!

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m.Th.
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Re: Show viewing offset in image information

Post by m.Th. » Fri Mar 07, 2014 7:47 am

Thanks both!

However, the main challenge here is GUI. How do we tell in Compare window something like:

"In View 3 show the View 1 XORed with View 2?"

Btw, in Compare Window which is View 1 and which is View 2, 3, 4?

...and from the strip of thumbnails which is the image which is displayed in view 1 or 2 or 3?

I think that we must update a little the GUI there. As always, the things are simple if we think in the right way. If we'll found a complicated solution it means that we didn't thought as it should.
m. Th.

The Ascetic Experience - The best photos and texts from Holy Mountain (Athos)

- Dark Themed XnViewMP 0.88 64bit & XnView 2.00 x64 on Win7 x64 -

yossic00
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Re: Show viewing offset in image information

Post by yossic00 » Fri Mar 07, 2014 7:44 pm

m.Th. wrote:
yossic00 wrote:Hi,

The compare tab shows the images side by side. For me it's easier to spot differences when comparing images by alternating between them so I prefer to put them on different tabs to compare. Also the compare tab doesn't let me open images from different directories.

Thanks,
Yossi
About "open images from different directories" - you can do that by eg. using Tag box.

About the other thing: you said that "it's easier to spot differences when comparing images by alternating between them" - why that? Do you want to see where the images are different? Perhaps a XOR overlay engine which will show only the differences between files will help?
Didn't know about the tag box. Thanks!
One issue I've found is that when comparing files from the tagged files list the compare window shows an empty thumbnails pane. I've expected that the thumbnails pane will show the files from the tagged files list (just like when comparing files from a regular folder, the thumbnails pane show all the file in that folder).

The XOR overlay looks interesting but I've never used such a feature so I don't know how helpful it is in comparing images. Alternating between the images is not only for spotting the differences; it's also for comparing between them and deciding which one is better. This is useful e.g. when processing a raw image with several options and comparing them. Personally, I find it easier to do it by alternating between the images then by viewing them side by side.

Yossi

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XnTriq
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Re: Show viewing offset in image information

Post by XnTriq » Fri Mar 07, 2014 10:00 pm

yossic00 wrote:For me it's easier to spot differences when comparing images by alternating between them so I prefer to put them on different tabs to compare.
I'm like Yossi. Comparing images “on top of each other” is the most effective way for me.

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oops66
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Re: Show viewing offset in image information

Post by oops66 » Fri Mar 07, 2014 10:21 pm

Hello Xntriq,
... Thank you ... I like your last solution to compare two images ;-)
... the Before/After plugin:
http://www.catchmyfame.com/catchmyfame- ... er-plugin/
XnViewMP 0.82 Linux X64 - Ubuntu 16.04 LTS - X64

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XnTriq
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Re: Show viewing offset in image information

Post by XnTriq » Fri Mar 07, 2014 10:30 pm

oops66 wrote:... the Before/After plugin:
http://www.catchmyfame.com/catchmyfame- ... er-plugin/
I was looking for the developer's site, but couldn't find it. Thanks, pal :D

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m.Th.
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Re: Show viewing offset in image information

Post by m.Th. » Sat Mar 08, 2014 9:45 am

Sooo.... then perhaps is better to have the "Use tabs" option in Compare window - like in XnView Classic?
m. Th.

The Ascetic Experience - The best photos and texts from Holy Mountain (Athos)

- Dark Themed XnViewMP 0.88 64bit & XnView 2.00 x64 on Win7 x64 -

yossic00
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Re: Show viewing offset in image information

Post by yossic00 » Sat Mar 08, 2014 9:54 am

XnTriq wrote:
yossic00 wrote:For me it's easier to spot differences when comparing images by alternating between them so I prefer to put them on different tabs to compare.
I'm like Yossi. Comparing images “on top of each other” is the most effective way for me.
I didn't find the "Use Tab" option. Is that available only in the windows version?

Yossi

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XnTriq
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Re: Show viewing offset in image information

Post by XnTriq » Sat Mar 08, 2014 10:00 am

m.Th. wrote:Sooo.... then perhaps is better to have the "Use tabs" option in Compare window - like in XnView Classic?
I think so.
yossic00 wrote:I didn't find the "Use Tab" option. Is that available only in the windows version?
Yes. XnView Classic, to be exact.
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oops66
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Re: Show viewing offset in image information

Post by oops66 » Sat Mar 08, 2014 12:31 pm

m.Th. wrote:Sooo.... then perhaps is better to have the "Use tabs" option in Compare window - like in XnView Classic?
... Yes especially with this "Before/After" plugin concept ... so only one tab is enough ;-) ... and an other one for the XOR solution ;-)
XnViewMP 0.82 Linux X64 - Ubuntu 16.04 LTS - X64

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