Discussion:
Image Interpolation
Manuel Enrique Gutierrez Perez
2010-09-13 14:30:57 UTC
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Hello, I´m a KDE user since kde 3.x and I´m very disappointed with Gwenview in its actual state, don´t get me wrong is great, the user interface is awesome, but it lacks one feature from KDE 3.x, image interpolation, please let´s think this way: you can install several video players, smplayer, VLC, etc... but the image viewer place has always been for Gwenview, before you developers focus on video support you should get to work on "image" features wich is the objetive of the software, I´m not more happy with Gwenview because it can play videos, altought I´m a little bit sad for its lackness of interpolation algorithms.
People, even gpicview has a decent interpolation..!!!


Cheers, Manuel.
Aurélien Gâteau
2010-09-13 22:00:43 UTC
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Post by Manuel Enrique Gutierrez Perez
Hello, I´m a KDE user since kde 3.x and I´m very disappointed with Gwenview in its actual state, don´t get me wrong is great, the user interface is awesome, but it lacks one feature from KDE 3.x, image interpolation, please let´s think this way: you can install several video players, smplayer, VLC, etc... but the image viewer place has always been for Gwenview, before you developers focus on video support you should get to work on "image" features wich is the objetive of the software, I´m not more happy with Gwenview because it can play videos, altought I´m a little bit sad for its lackness of interpolation algorithms.
People, even gpicview has a decent interpolation..!!!
If with interpolation you mean smooth scaling images when they are
zoomed in, then it is a deliberate choice not to smooth scale images
when zoom factor is more than 1.

The reason behind this choice is that when zoom is more than 1 then you
end up with a blurry image which I consider less useful than showing the
actual image. This is especially true when you want to fine-tune a crop
operation: in this situation you want to know where pixels end.

Aurélien
Manuel Enrique Gutierrez Perez
2010-09-14 13:00:55 UTC
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Aurelien:

I have always criticized the "it just works" motto, I don't want Gwenview just work, I want it works the way I want, like did my Gwenview in kde 3.x.
You may wonder who am I to talk like this so arrogant.... I'm an user, and I suspect that maybe you people are working with the idea of having tons of users just like me.
The average user just wants Gwenview to watch images, photos of the summer holidays, wallpapers, you name it.
Smooth scaling is a more polished way to show the image to the user, not everybody has the intention to edit an image.
IMHO Gwenview should be set by default to show images with smooth scaling (a fast but decent one, I´m thinking bilinear maybe) and if "ONLY IF" the user atempts to edit and image then Gwenview should display the raw pixel without smoothing, that´s an idea for improve usability.

Cheers, Manuel E.

PD: I´m just an user sending some feedback to the image viewer of my favorite desktop environment, I will be happy if anything that I said here generates some useful idea.
Post by Aurélien Gâteau
If with interpolation you mean smooth scaling images when they are
zoomed in, then it is a deliberate choice not to smooth scale images
when zoom factor is more than 1.
The reason behind this choice is that when zoom is more than 1 then you
end up with a blurry image which I consider less useful than showing the
actual image. This is especially true when you want to fine-tune a crop
operation: in this situation you want to know where pixels end.
Aur?lien
Manuel E.
2010-09-16 20:27:43 UTC
Permalink
Hi Aurelien:

I didn't get it, you meant by this that Gwenview will never have smooth
scaling again?
Shouldn't be the user be the one who determines if he wants to see the
raw pixels or a smooth scaled eye-friendly image?
Sorry for being a little annoying on the subject, some people like to
criticize programs, I personally like to improve them by sending feedback.

Cheers, Manuel.

PD: BTW I tought there was a whole dev team for Gwenview but now I see
you're on your own, you rock!!
Post by Aurélien Gâteau
If with interpolation you mean smooth scaling images when they are
zoomed in, then it is a deliberate choice not to smooth scale images
when zoom factor is more than 1.
The reason behind this choice is that when zoom is more than 1 then you
end up with a blurry image which I consider less useful than showing the
actual image. This is especially true when you want to fine-tune a crop
operation: in this situation you want to know where pixels end.
Aur?lien
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