Lens distortion: SKRWT is really good

[Brjlk]

Finally found an app. to correct barrel distortion of the wide angle lens & tilt distortion.
Some one first mentioned it here. Thanks

See for yourself.

https://forums.androidcentral.com/e...ls?id=accky.kreved.skrwt.skrwt&token=knD77uky

 

[TNCattleDog]

Thanks. Will give it a try.

David

 

[sswitzer]

Before and after... it's a bit finicky, but I like his it's an editor dedicated to this type of task.

 

[sswitzer]

On more before and after.

 

[Mike Dee]

Nice job but how much effort is it?

 

[sswitzer]

Nice job but how much effort is it?

Once you figure out the tool, it's very quick. Note that the same thing can be achieved in Snapseed, but with more effort.

 

[BB_Bmore]

It looks as though all this app is doing is cropping out the edges of the photos from the wide angled lense. Maybe I'm wrong but this could easily be achieved with the gallery app.

 

[sswitzer]

One more using an even trickier photo, and an even better tool in the app.

 

[sswitzer]

It looks as though all this app is doing is cropping out the edges of the photos from the wide angled lense. Maybe I'm wrong but this could easily be achieved with the gallery app.

Nope, it has a variety of skewing methods. You could do it using Snapseed, but you'd be in for more of a journey.

 

[talon1189]

It looks as though all this app is doing is cropping out the edges of the photos from the wide angled lense. Maybe I'm wrong but this could easily be achieved with the gallery app.

I don't see much difference except what is quoted above. It is not worth the trouble IMHO.

 

[Mike Dee]

It looks as though all this app is doing is cropping out the edges of the photos from the wide angled lense. Maybe I'm wrong but this could easily be achieved with the gallery app.

Nope

 

[sswitzer]

Just look at the curved lines that mostly become straight.

 

[Brjlk]

Nice job but how much effort is it?

Very little effort. Once you have decided where you want to store your SKRWT files, you just need to move 2 or 3 sliders. With some practice 1 minute is enough.
The most spectacular results are when you have straight lines that have barrel distortion, for example buildings or interior of a room distorted by a wide angle lens.

 

[Jeremiah Bonds]

I messed with it a little when I first got the phone.. But I kind of like the barrel distortion.

 

[sswitzer]

I messed with it a little when I first got the phone.. But I kind of like the barrel distortion.

I do as well... but sometimes it can be distracting.

 

[Mike Dee]

I messed with it a little when I first got the phone.. But I kind of like the barrel distortion.

I was going to say the same thing but I though I might be alone

 

[BB_Bmore]

Nope

You say "nope" but every before and after photo shown has been cropped, has it not? I'd like to see a before and after without details of the original photo being cropped out. Until then I'm sticking with my assumption. I've yet to see an after photo that isn't missing anything from the original photo.

 

[sswitzer]

You say "nope" but every before and after photo shown has been cropped, has it not? I'd like to see a before and after without details of the original photo being cropped out. Until then I'm sticking with my assumption. I've yet to see an after photo that isn't missing anything from the original photo.

Yes, some cropping had occurred (it has to), but the key improvement is the straightened lines, etc. (Like the telephone poles in the 2nd set.)

 

[Mike Dee]

Yes, some cropping had occurred (it has to), but the key improvement is the straightened lines, etc. (Like the telephone poles in the 2nd set.)

There is straightening in all the photo sets

 

[Mooncatt]

You say "nope" but every before and after photo shown has been cropped, has it not? I'd like to see a before and after without details of the original photo being cropped out. Until then I'm sticking with my assumption. I've yet to see an after photo that isn't missing anything from the original photo.

It is physically impossible to not crop part of the resulting image unless you want a vacant area in the middle of every edge. It's just the nature of the correction. For a good visual of what it would look like without a crop, look at the the first image of the telephone booth in this article discussing barrel distortion and correcting it in Photoshop.

https://www.google.com/amp/www.gilsmethod.com/how-to-correct-barrel-distortion-in-photoshop/amp

As for what else is going on, look at the OP's examples. In the first one, it's pretty obvious looking at the liquid holding tank/tower. In the first image, it looks to be leaning over. In the second, it's vertical like it should be. Same with the telephone poles in the second example.