[GMIC] "Scale Down Neat " new filter for testing

garagecoder · **Posted:** Mon Sep 24, 2012 8:49 am **(#21)**

You should be able to just click the filters refresh button in G'MIC now to get the new filters (which appear under testing > photocomix > enhancement), if it's not showing after a refresh you might need to empty out your .gmic file if you tried adding it manually before.

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

@Garagecoder
welcome on GC :hi5

and thank a lot for the quick support ! :tyspin

lylejk wrote:

Thanks GC. hey PC; anyway possible to add a keep aspect ratio option (only then need a single slider)? Have to play with post sharpening feature, but I did get good results using wavelet sharpening plugin afterwars. No aliasing to boot. Good work.

Lylejk there are alread 2 options to preserve image ratio, one "set up Width" is even the default:
So as default you may just set up the new Width, and the filter will ignore what is in the "New Height "field and compute it autoatically

in the dropdown list only the first option require to put both W and H, the second that is the default require only W (and will ignore "New Height)
and the last option will only consider the New Height and compute automatically the W

Alas there is no way to toggle off the controls not used, so i can not make more intuitive, but "Respect image ratio, set New Width" should be clear

About interface what you prefer the more complete interface, (screenshot 1)
or that more simplified?

...i believe that, except for who known well the functions of the various controls of gmic unsharpmask the more simple is also the best because should give a good balance between "dark halo" and "white halo" sharpening

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

@O

the only problem i could image was a error of cop and paste
(even a missed or added dot may screw up)

I hope now that the file is online everthing works for you

Oregonian · **Posted:** Mon Sep 24, 2012 9:54 am **(#24)**

The good computer fairy has finally come through for me and it's in my G'MIC now. :yes

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12535

PhotoComix wrote:

.....
Lylejk there are alread 2 options to preserve image ratio, one "set up Width" is even the default:
So as default you may just set up the new Width, and the filter will ignore what is in the "New Height "field and compute it autoatically....

Thanks PC; didn't know that. I guess this applies to all G'MIC presets that allow width and height change. Learn something new every day.

Rod · **Joined:** May 16, 2010 **Posts:** 14720 **Location:** USA

Weird.
I deleted the .gmic file i created with PC's code and i still have an entry in the faves area, and two in the PhotoComix area of my GMIC menus.

And it won't let me delete the faves entry like my other fave presets.

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

NEW VERSION COMING :yes

the new interface

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

Thank to Garagecoder the update is online.

First i moved the filter in the right place in the "Testing" menu

then i added optional controls for pre-blur :

"Automatic" compute automatically the best amount of blur, according to the theory,( obviously if chosen disable the Blur_x and blur_y sliders )

Anyway for my work-flow (scaling down from about 4800X 3600 to 2400X1800 or more seldom 1600X1200 ) i prefer much lower values of that theoretically correct that in my opinion good results only if the optional post sharpening is done
But without post sharpening tend to a soft focus effect ( that may be nice but is not what i wish)

For my taste and work-flow, i prefer disable "Automatic" and use values for pre-blur from 1 to 1.5 ....exceptionally 2 for the most aliased or noisy images
so i added the 2 "Blur_X" and " Blur_Y" sliders.

i repost the screenshot :

Then i simplified controls for the optional post sharpening , the default should give good result in most of case or anyway be a good starting point

Oregonian · **Posted:** Tue Sep 25, 2012 2:36 pm **(#29)**

I dumped my .gmic file and updated G'MIC and the filter is available. :mrgreen:

One thing I'd like and it's not crucial but when I choose preserve_image_ratio Set new Width or Height, it would be nice to see the other measurement update to what it will be:

Like when I set new Width to 500, I'd like to see that the Height changed to 600 or whatever the preserved ratio makes it.

Very cool, PhotoComix. :yes

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

Oregonian wrote:

One thing I'd like and it's not crucial but when I choose preserve_image_ratio Set new Width or Height, it would be nice to see the other measurement update to what it will be:

Like when I set new Width to 500, I'd like to see that the Height changed to 600 or whatever the preserved ratio makes it.

I would like too but as far i know Gmic doesn't support it

#############################################à

Edit

do you prefer the new or the previous interface ?

Oregonian · **Posted:** Tue Sep 25, 2012 3:36 pm **(#31)**

I like this one - newest.

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