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G'MIC Image Sequence

Aug 9, 2014, 08:25
Post: #1
G'MIC Image Sequence
Hello. First post.

I shoot a lot of DSLR video but frequently suffer from ISO noise in darker areas. G'MIC's anisotropic smoothing is great for removing this, but I don't want to have to apply the effect one frame at a time. Is there any way to apply it to a whole sequence? Either in G'MIC or with a separate plug-in?
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Aug 9, 2014, 09:43
Post: #2
RE: G'MIC Image Sequence
The base for the filter is/was greycstoration, which was incorporated into G'mic.

I still find the older plugin useful, rather than wade through layers of G'mic http://registry.gimp.org/node/137

Looks like this: http://i.imgur.com/MNxdT28.jpg

The BIMP batch plugin does pick it up, and works here taking values from the original defaults.

as: http://i.imgur.com/3WCxKbG.jpg

However your video is what? 1280x720 maybe. BIMP does not break any speed records so it would be faster with standalone G'mic in a batch file although I do find G'mic syntax, not wonderful.

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Aug 9, 2014, 09:45
Post: #3
RE: G'MIC Image Sequence
Thanks. I had a Flickr account once but I forgot all the details. I found a discussion there about batch processing images but most of it went way over my head. I don't really know anything about coding or using command lines. I'll have to hunt around for tutorials on it unless anyone knows of an easier way.
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Aug 9, 2014, 09:47
Post: #4
RE: G'MIC Image Sequence
(Aug 9, 2014 09:45)AdrParkinson Wrote:  Thanks. I had a Flickr account once but I forgot all the details. I found a discussion there about batch processing images but most of it went way over my head. I don't really know anything about coding or using command lines. I'll have to hunt around for tutorials on it unless anyone knows of an easier way.

What operating system are you using?

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Aug 9, 2014, 09:49
Post: #5
RE: G'MIC Image Sequence
(Aug 9, 2014 09:43)rich2005 Wrote:  The base for the filter is/was greycstoration, which was incorporated into G'mic.

I still find the older plugin useful, rather than wade through layers of G'mic http://registry.gimp.org/node/137

Looks like this: http://i.imgur.com/MNxdT28.jpg

The BIMP batch plugin does pick it up, and works here taking values from the original defaults.

as: http://i.imgur.com/3WCxKbG.jpg

However your video is what? 1280x720 maybe. BIMP does not break any speed records so it would be faster with standalone G'mic in a batch file although I do find G'mic syntax, not wonderful.

Most of the videos I shoot are 1920x1080. Speed isn't my biggest concern as I can leave it going all night if necessary. I'll look into BIMP, I hadn't heard of it.
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Aug 9, 2014, 11:33
Post: #6
RE: G'MIC Image Sequence
(Aug 9, 2014 09:47)rich2005 Wrote:  What operating system are you using?

Windows XP 32-bit. I'm old-fashioned.
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Aug 9, 2014, 12:58 (This post was last modified: Aug 9, 2014 12:59 by rich2005.)
Post: #7
RE: G'MIC Image Sequence
If you ever come back Wink

WinXP is ok. I have a WinXPsp3 setup for video capture and DVD authouring.

For the greycstoration plugin. First see if it works.
Put the BIMP plugin http://www.alessandrofrancesconi.it/projects/bimp/ bimp.exe & pcre3.dll along with the greycstoration plugin GREYCstoration_gimp_pc_win32.exe in your ../.gimp-2.8/plug-ins folder.

Try it on a single frame to see if it produces an acceptable result. You find the plugin in filters -> enhance. If it works make a note of the values.

Open BIMP, add the files, add a procedure and use other gimp procedure. Find the plugin greycstoration and enter the values you saved. The only missing one is precision of gaussian function Have a guess at this maybe 2 or 3.

You can save the procedure for later use, run BIMP

Standalone gmic the command line is like this, Use the gimp-gmic plugin to find asome good values.

Code:
gmic -input test.jpg -smooth 10,0.7,0.3,0.6,1.1,0.8,30,2,0,1 -output test-smooth.jpg

All default values shown there except for the first value amplitude so change them if required or if acceptable you can reduce to

Code:
gmic -input test.jpg -smooth 10 -output test-smooth.jpg

seems to make big jpegs.

A command line in windows for a folder full of images, maybe something like this (untried)

Code:
for /r %x in (*.jpg) do gmic -input test.jpg -smooth 10 -output "%x-new.jpg"

I would put all the images + gmic in the same folder then run the command from the folder

might get you started.

Other sources: There is a dedicated gmic section at gimpchat.com worth asking the question there.
This is an easy to read intro to gmic http://particularart.com/tools-and-toys/gmic/basics/

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Aug 10, 2014, 08:12
Post: #8
RE: G'MIC Image Sequence
Thanks. I'll give it a try and cross my fingers.
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