Release of G'MIC 2.5

David_Tschumperle · October 14, 2018, 2:18pm

This is the changelog for the release of the 2.5 version of the G’MIC software.
It lists all new features and changes done since the latest major version 2.4.

What is G’MIC?

G’MIC (GREYC’s Magic for Image Computing) is a full-featured open-source framework for image processing. It provides several different user interfaces to convert/manipulate/filter/visualize generic image datasets, ranging from 1D scalar signals to 3D+t sequences of multi-spectral volumetric images, thus including 2D color images.

G’MIC main project page : https://gmic.eu
G’MIC download : https://gmic.eu/download.shtml
G’MIC web service : https://gmicol.greyc.fr/
G’MIC language tutorial pages : https://gmic.eu/tutorial/basics.shtml
Support G’MIC development : G'MIC — Association LILA

What’s new in version 2.5?

New features:

Core:

New command fontchart generates the set of characters that can be written by command text (and derivatives).

fontchart1120×832 65.8 KB
New command ilaplacian inverts a Laplacian image, using a simple Poisson solver in the Fourier space.
New command warp_patch computes a warped image using patch overlaps.
New command noise_perlin renders Perlin Noise on images.
Command compress_clut and decompress_clut have been rewritten from scratch, and work now with better speed and value precision.
A step in a selection now can get an additional % , as in blur[0--1:50%] (which selects 2 images for the blur command).

Qt plug-in:

New filter Artistic / Stylize implements an exemplar-based style transfer algorithm, to stylize images from user-defined styles.
New filter Degradations / Noise [Perlin] :

G’MIC-Qt has more flexibility for generating dynamic interfaces, i.e. GUI where changes in a parameter can change other parameters as well (make them visible or invisible).

Improvements:

Core:

Allow characters with ascii code >=128 to be used in math expressions.
Improved bash completion script for CLI tool gmic (on Linux).
Optimization of command extract_region (x2 faster).
Optimization of matrix product, when matrices are 1x1, 2x2, 3x3 and 4x4.
Empty vectors in math parser are now allowed, and considered as the constant value 0.
Command eval with selection now behaves like fill without actually setting the image values.
Command matchpatch is a new and faster implementation of a patch-matching algorithm, and replaces the previous patchmatch command (still available though).
Random number generator used by G’MIC now support multi-threading. Each command/filter using random numbers should be faster now (command matchpatch is especially concerned).
New substituting expressions {*,u,v}, {*,d,e}, {*,w,h} available (stand respectively for {*,u},{*,v} , {*,d},{*,e} and {*,w},{*,h}).
Function polygon() and ellipse() in math evaluator now support drawing of outlined segments with custom line pattern.
Most of the CLUTs available in G’MIC have been re-compressed with the new CLUT compression algorithm (more precision, less storage needed). New CLUTs have been added, for a total of 552 CLUTs available to date.
All OpenCV-based functions in G’MIC have been rewritten to use the C++ API of OpenCV, rather than the old C API. Thanks to Antonio Albiol for his contribution on this!
Functions fsize(), isfile(), isdir(), date() now takes a real string as arguments to check file properties.
Access to sub-vector of a vector now allows to specify a step argument, which makes it more versatile.

Qt plug-in:

Management of Fave filters now handles the case when case change happens in a filter name.
Make dark theme default for GIMP 2.10 and Krita.

Bug fix:

Core:

Fixed bug in command text : some accented characters were not displayed correctly (small glitch at the bottom) for larger font sizes.
Make sure the display window stays on screen when visualizing a large collection of images at the same time.

Qt plug-in:

Solve bug related to layer names when they contain parentheses.

Others:

We now have a collaboration with “Association LILA (Libre comme l’Art)”, a French non-profit organization which collects donations to help developing the G’MIC project.

David_Tschumperle · December 3, 2018, 9:05am

2018/12/03 : Release of minor version 2.4.2.

lylejk · December 3, 2018, 3:10pm

Already knew you were going to release 2.4.2. today; got the head’s up from Doron at GIMPChat. Looking forward to the Style Transfer soon. Thanks a heap, David. G’MIC’s the gift that keeps on giving.

garagecoder · December 7, 2018, 1:29pm

We already have lots of good sharpening type filters in G’MIC, but here’s another anyway

Testing → Garagecoder → Deblur Texture

Been sitting in my local file for months, so may as well add it. In testing for now, probably needs some work.

afre · December 8, 2018, 4:06am

I rarely use the GUI so I don’t remember: I was wondering if the search field looked at the names of the filters only and not the descriptions. If that is the case, it would be helpful in terms of discovery to search the descriptions also. E.g., the one liner of @garagecoder’s Deblur Texture seen above.

David_Tschumperle · January 7, 2019, 4:36pm

2019/01/07 : Release of minor version 2.4.4.

Reptorian · January 7, 2019, 7:21pm

One step closer to the time to submit new filters.

David_Tschumperle · January 11, 2019, 1:45pm

2019/01/11 : Release of minor version 2.4.5 (last one for a while ).

iarga · January 18, 2019, 9:09am

@David_Tschumperle, @garagecoder

I have a problem with filters made by garagecoder. (for example “Deblur Texture”, “Tone Enhance”)
windows 64 GIMP 2.8, GMIC 2.4.5, GMIC 2.4.2

Those filters don’t work anymore with lab-l, ycbcr-y, ycbcr-cbcr. With those channels I have a “Preview time out” or a “Preview error”:

So I did instal an old GMIC (2.4.2) . Before refresh, this filters worked as expected. After refresh this filters didn’t work with those channels anymore

edit:
On Gimpchat more people have this problem:
17 jan 2019 h 18.00 what happen? [SOLVED] • GIMP Chat,
also with linux and GIMP 2.10

is solved, thanks

Reptorian · January 18, 2019, 1:58pm

There is a bug report about that - Anything with ac commands or mix_rgb does not work · Issue #103 · dtschump/gmic · GitHub

Let’s hope this gets solved.

David_Tschumperle · January 18, 2019, 1:59pm

Solved !

Reptorian · January 18, 2019, 2:08pm

Refreshed and can corrobate that claim. Thanks!

Stylize filter still doesn’t work as in G’MIC does nothing to the visible image, but I do believe that has to do with Windows Krita. At least the error doesn’t show up anymore nor Krita exits.

afre · February 9, 2019, 9:24pm

Is it possible to output multiple plots?

David_Tschumperle · February 10, 2019, 8:14am

Do you mean “display multiple plots in interactive windows” (case 1), or “save rendering of plots” (case 2), or something else ?

case 1 :

$  gmic sp lena,128 s y k[0,10,20,30] d parallel plot[0],plot[1],plot[2],plot[3]

case 2 :

$ gmic sp lena,128 s y k[0,10,20,30] dg ,

afre · February 10, 2019, 9:09am

Case 1 with the flexibility of case 2:

Provide command that is more convenient to use than parallel plot[0],..,plot[-1]
Make plots easier to compare; e.g.,
- display in a montage
- append plots in z-axis to be flipped through, although scroll button is taken

Mushy · February 10, 2019, 10:47am

Hi,

I’m trying to use the GMIC CLI for a batch job (just trying something out) but cannot seem to get the syntax correct, I’m pasting into cmd:
gmic v -99 filename.png fx_equation_parametric "sin(t)*(exp(cos(t))-5*cos(4*t)-sin(t/12)^5)","cos(t)*(exp(cos(t))-2*cos(4*t)-sin(t/12)^5)",-928,532,588,0.55,2,64,0,0,128,0,0,1,1,1 -o out_.png
…but I get errors - I have tried putting the \ symbol before quotes and brackets as I successfully did with the fx_conformal_maps command in the CLI, but that’s not working here… is it possible to get around this somehow? Thanks

Mushy · February 10, 2019, 11:12am

Sorry if it was the wrong place to post, anyway I figured it out, I had to add square brackets i.e.:

gmic v -99 filename.png fx_equation_parametric ["sin(t)*(exp(cos(t))-5*cos(4*t)-sin(t/12)^5)","cos(t)*(exp(cos(t))-2*cos(4*t)-sin(t/12)^5)"],-928,532,588,0.55,2,64,0,0,128,0,0,1,1,1 -o out_.png

Many thanks!

David_Tschumperle · February 10, 2019, 11:32am

This would require someone write another interactive plotter
What I do usually to compare plots together, is either :

Append all curves along ‘c’, because a multi-channel plot shows all curves on the same graph.
Or use -dg , then append the results along ‘z’ so I can display them as a volumetric image (and use the mouse wheel to switch between planes).

afre · February 10, 2019, 8:00pm

I will do this for the time being. The issue that I have with dg is that it isn’t interactive and the details aren’t smooth in any of the zoom levels.