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Software Photoshop, Lightroom, Paintshop Pro, Painter, etc., and all their various plugins. Of course, you can also discuss all other programs, as well.

Here is FFT for 64 bit photoshop

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  #191  
Old 01-05-2018, 08:46 PM
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Ron Chambers Ron Chambers is offline
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Cool Re: Here is FFT for 64 bit photoshop

Quote:
Originally Posted by Chain View Post
> Do you paint or zero the location?

Not exactly sure what you mean by this? Anyway, what I do is just paint over the little "stars" with a round black brush (on the red channel). Click, click, click, click, click...

> I tried the spot fill with PS doing a fill and that looked good on the red channel but the green messed up too.

Sorry, again I'm not 100% following the exact steps you are performing here?

---

I'm testing now to attach a zip file (with the beta plugin) to this post to see if that makes it members-only.

I could also mirror/host the file, I've hosted the previous one for ages anyway. And it's good to have a backup host in case one goes down.

---

EDIT: Excellent. By attaching the zip-file of the plugin to the message you can make it require you to be logged in to download!

I suggest the following when the plugin is ready(ish):

1. Start a new thread. Attach the files to the first post.
2. I make the 2nd post - just blank to reserve it for future updates (if I make any actions etc. that can go along with the plugin without requiring you to update main post).
2. Add a final post to this thread with a HUGE link to the new thread.
3. In a reply to the new thread I can, after a while, post a mirror download link for the files (as a backup in case something happens to them).
4. In the old download I'm hosting I will edit the zip file to include a link to the new thread and recommend people go there for a better/new version.
5. In this old thread, edit the posts that links to the various beta versions and point them to the new thread.
First off, I've added a PS brush for selecting the stars to my files. https://www.dropbox.com/s/q8h1f67cej...n2018.zip?dl=0

This is a decaying 4 pointed star. Load to PS brushes and use to select. It is large (radius of 500px) and full black at center. Instead of filling the hole with black use the pencil to suppress the star using something like a radius about 25 and opacity of 25%. This should dim the stars so that the iFT is less noisy. We'll discuss the green mess later and the spot tool too.

What you have come up with sounds good for the file and new thread. In testing it, I'm unable to directly attach a file greater than 100kb. Maybe you can. I can send you the files and you attach gets me out of the direct loop and then you can maintain.

Let me know about the use of the star pattern. Do you know someone good at making brushes? Might use them to fix my crude version.

CHEERS,
RON
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  #192  
Old 01-06-2018, 02:43 AM
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Ron Chambers Ron Chambers is offline
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Thumbs up Re: Here is FFT for 64 bit photoshop

Another try at a brush to suppress the stars. Much smaller so it attached. Use size about 100px, opacity 50%, and smoothing 25%. You might have to click more than once with the Pencil.

Forget earlier one please.

RONC
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File Type: zip CrossHairsNarrow1001-06jan2018.zip (26.1 KB, 6 views)
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  #193  
Old 01-07-2018, 12:56 AM
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Ron Chambers Ron Chambers is offline
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Re: Here is FFT for 64 bit photoshop

Which is higher priority? Greater than the 30000 pixels or ability to do individual channels by using dialog? Code is built in to do individual channels but plugin needs way to get that info.

RONC
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  #194  
Old 01-07-2018, 04:34 AM
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Chain Chain is offline
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Re: Here is FFT for 64 bit photoshop

I'd say individual channels is more important than >30.000 px support.

(Attachments on the forum are limited to 100 kb, unless you become a patron (25$), then it's 1 MB).
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  #195  
Old 01-08-2018, 08:36 AM
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Ron Chambers Ron Chambers is offline
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Thumbs up Re: Here is FFT for 64 bit photoshop

The best star suppressor so far. IMMEO!! Removes center and wings without disturbing what is around it. Use as brush/pencil, multiply, width 251, and opacity 100%.

Let me know what you think. I'm not really good at deciding what to suppress so need yours and others thoughts.

Attached to thread.

RONC
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File Type: zip StarSuppressor251-08jan2018.zip (2.2 KB, 4 views)
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  #196  
Old 01-08-2018, 03:20 PM
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Thumbs up Re: Here is FFT for 64 bit photoshop

Ok, I took the time to sit down and do some testing. The optimal brush sizes vary depending on the source image, but I did try to improve on yours a bit, by adding a bit more "glow" in the center and slightly shorten the arms (arm length also is image/pattern dependent). Worked better on my image at least. I tested on three different images, one with a paper pattern, one with a grayscale raster pattern, and one that had a CMYK raster pattern (scanned as RGB). None of the images were very high resolution, just enough to see the patterns.
  • I found that in the middle of the stars, removing/reducing the "glow" seemed around the stars helps remove patterned halos around high-contrast edges.
  • If the star "arms" are too long you start to lose contrast in the image; a bit too short apparently was a bit better than too long.
  • In one image I had a line somewhere (not a clear star shape) and removing the line did seem to help reduce the pattern, but contributed a lot less than the stars.
  • The horizontal line needs to be intact, so if you paint over stars close to it, then you need to erase a bit of what you painted to bring back the line.
  • Same goes for the vertical line, but it seemed to be less important for some reason? Might have been mainly due to my test images.

To speed up the testing I made some actions, attached, that you too can try. I split it into multiple actions to make it easier when testing. It assumes you have my brush installed (although it likely works fine without it). They're not "production ready", but they should make sense and help a bit with testing. That "automatic star remover" might need some of the settings to be adapted to the individual image sizes. Let's say it's in Alpha.

For the last, and smallest, test with the color image, I manually separated the color channels, but did a copy/paste-from-a-channel mistake and the gamma got converted and ended up wrong, but otherwise it worked well enough. The stars were in a bit different positions for the three channels. I tried two methods; processing the channels individually (then recombining and reducing color noise), or just processing the luminosity and luminosity-blend it with a slightly blurred version of the original image. The differences were so minor (ignoring the gamma shift) that I could not decide on what method was better (although just doing just the luminosity was obviously simpler/faster). More testing will be required (but to do that I will need to make more and improved actions for speeding up the process of separating and recombining).

Ps: I found a new Photoshop bug, when recording an action, it does not record the angle of a gradient layer. I noticed a bit late, so it messed a bit with my last color tests.

Ok, that was a lot of work. Now I gotta go to sleep so I can attend my actual day job. :P

EDIT: Download link removed. New version is now HERE.

Last edited by Chain; 03-03-2018 at 07:49 AM.
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  #197  
Old 01-11-2018, 07:54 AM
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Ron Chambers Ron Chambers is offline
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Thumbs up Re: Here is FFT for 64 bit photoshop

Sorry for slow response but been with the Beaches.

I agree with what you've said and am trying to build a synthetic so we can see where the different parts come from. The Fourier is a global representation rather than local as it the image. So every Fixel??? is a combination from the whole image for spatial frequencies kx, ky. The green layer tells us where and the red says how strong or weak.

The brush you sent needs to decay in strength as well as narrow towards the points. Should be scaled by 1.0/(distance from center of brush to pixel)**2. That way longer arms don't cause major problems. This is why I'm building the synthetic.

I couldn't get the action to run but haven't spent any time looking at it. I use scripts a lot and usually start with an act file.

I'm making progress with the UGLY dialog but slow from health again. Reason I went to the Beaches. They are specialist so no sand involved while you're slaving over a pixel or two.

RONC
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  #198  
Old 01-11-2018, 09:08 AM
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Ron Chambers Ron Chambers is offline
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Thumbs up Re: Here is FFT for 64 bit photoshop

What the dialog will look like,

RONC
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File Type: png dialog.png (3.3 KB, 7 views)
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  #199  
Old 01-12-2018, 04:18 AM
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Re: Here is FFT for 64 bit photoshop

Would it be possible for the option chosen in the filter dialog to be remembered by an action?

Right now, running my action triggers the dialog, but you have to manually choose before it continues.
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  #200  
Old 01-12-2018, 04:35 AM
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Ron Chambers Ron Chambers is offline
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Thumbs up Re: Here is FFT for 64 bit photoshop

Quote:
Originally Posted by Chain View Post
Would it be possible for the option chosen in the filter dialog to be remembered by an action?

Right now, running my action triggers the dialog, but you have to manually choose before it continues.
Sorry. I put code to do that with the real dialog not the kludge. Will copy over and test this morning. Should be able to get it to you by 12:00 GMT - 6 today.

We need others testing too.

Cheers
RONC
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