Thursday, January 21, 2021

Diego Easy Voronoi

 Easy Voronoi  []

Author: Diego Nassetti "dinasset"
In menu: Diego → Quantize → Easy Voronoi...

Author's description:

Applies textures (Voronoi textures) randomly to the color areas: no sophisticated research into applying the best texture with color or lume; it's a little filter.
Therefore, the results are sometimes good and sometimes worse (depending on the texture selected by the filter for each area).
Give it a try if you like.

The attachment also includes (~17 MB) a starting set of 55 patterns (png) "Voronoi_Diego" + 32 patterns (jpg) "Voronoi_Issa"; as usual, you can add/remove whatever you want.

Lots of examples here.


Monday, January 18, 2021

Voronoi Ver.2.2 Bigger Preview Win_64bit

 Voronoi [voronoi.exe]

Author: David Necas "Yeti"
In menu: Filters → Render → Pattern → Voronoi...
Sources: here.



Technically, Voronoi generates 2D Voronoi diagrams of various semi-random sets of points and then visualizes them somehow.

What are Voronoi diagrams

Imagine a finite set of points in some metric space (or just just normal n-dimensional space, if you don't know much about metric spaces).
If you now take any point of the space, there definitely exists a point of the set which is closest to this point.
This way the set breaks the space to parts, (called cells below) each consisting of points nearest to a one point of the set.
This division is what is called Voronoi diagram of the set (roughly).

 Cell type:

Compiled for Gimp-2.10.22 Win_64bit: MareroQ

Thursday, January 14, 2021

Color Clip

 Color Clip []

 Author: khalim19
In menu: Colors  /Color Clip...

Color Clip darkens/brightens a given percentage of the darkest/brightest pixels in a drawable.
The drawable can be a layer, layer mask or a channel.

Color Clip works similarly to the Normalize in GIMP-2.8 (Colors -> Auto -> Normalize) removed from Gimp-2.10 - but available here: # 10 "contrast-normalize.exe", except that the black and white clip percentages are adjustable.
In fact, Color Clip with the percentages set to 0% achieves the same effect as Normalize.


Color Grading Ver.1.7.5

 Color Grading []

Author: John Lakkas [johnlak]
In menu: Colors / Color Grading...
Author's website here.

One of the few Python plugins (gtk) that offers a preview (even in two modes: Size: L or S).
Additionally, you can save your selected settings (a file is created : colorgrading.profiles in the plug-ins directory) and load the selected one.
Color Grading plug-in, creates a cine image look based on user input.
For a contemporary image look, use complimentary colors in shadows and highlights.
It is also preferable to be used on a somewhat neutral image (ie pre white balanced) for best control of the final result.
If it's not a raw image balance it before with Color Balance 2.

The Color Grading plug-in is also available in GMIC

In GMIC you will find it under: Colors, Color Grading.

Changelog Version: 1.7.5
MrQ: add "path" to Gimp Samj portable.


For normal installation copy to folder plug-ins:

These files are interrelated in the plug-in and a different location will cause a malfunction.



- GIMP 2.8: Copy appropriate files in:
    Vista and later     C:\Users\[USER]\.gimp-2.8\plug-ins
    XP and older     c:\Documents and Settings\[USER]\.gimp-2.8\plug-ins
- GIMP 2.10: Copy appropriate files in:
    Vista and later     C:\Users\[USER]\AppData\Roaming\GIMP\2.10\plug-ins
- Portable Samj:
- PortableApps:
    X stands for the USB drive letter

Python installation:
- Python usually ships with the OS so no manual installation is needed.
- GIMP 2.8: Copy appropriate files in:
- GIMP 2.10: Copy appropriate files in:
- Make sure .py file is marked as executable.

Color Balance 2 Ver.1.6

 Color Balance 2 []

Author: John Lakkas [johnlak]
In menu: Colors / Color Balance 2
Author's website here.

Color balance 2 plug-in can be useful to add or remove color tints in shadows,
midtones and highlights, while preserving the image luminosity.
One of the few Python (gtk) plugins  that offers a preview (even in two modes: Size: L or S).
Copy file in plug-ins folder.

Cool Effects scripts by John Lakkas

 Cool Effects  by John Lakkas (package of 5 scripts)


Author: John Lakkas [aka:johnlak]

In memu:
Colors / Cool effects / Cool Look
Colors / Cool effects / Cool Look 2
Colors / Cool effects / Cool Manual Lens
Colors / Cool effects / Cool-Warm
Colors / Cool effects / Manual Lens

Cool Effects requires YUV Temperature plugin by elsamuko -> here

Manual-lens_filter.scm & cool-manual-lens_filter.scm

This script changes the color balance and brightens up the image to imitate images taken with Manual/Classic/Vintage lenses.
Below you will find two versions of the script one with Manual lens only (Manual-lens_filter) and one with Manual lens and Cool Manual lens (Cool-manual-lens_filter).

Cool-look_filter.scm & cool-look2_filter.scm

This is a bundle of two filters with similar action. The first one (Cool Look) is cooling the white balance of all tones while boosting red tones saturation, somewhat imitating Nikon look.
The second (Cool Look 2) one is cooling only the dark tones while boosting red saturation only in the brighter tones, imitating a generic non aggressive cinematic color grading,
ideal for scenes with darkish background and people in the brighter tones.


Cool-Warm filter is creating two new layers one with warmer colors and one with cooler colors. It's purpose is to add to the top cool layer a mask and then paint the areas you would like to warm and the ones to be cool.
Useful for environmental portraits.

Elsamuko YUV Temperature Ver. 1.0 Win_64bit

 Elsamuko YUV Temperature [elsamuko-temperature.exe]


Author: El Samuko

In menu: Colors -> Color temperature.
Source code here. [however, problems with the new build] 

This plugin changes the color temperature of an image via shifting it in the YUV color space.

Windows binaries only from PhotoComix GIMP-PC_Lab.2_8_2-64bits [François or Sylvie ?] here.

Works fine for Gimp-2.10.

Elsamuko Heatmap Plugin Ver. 1.0 Win_64bit

Elsamuko Heatmap Plugin [elsamuko-heatmap.exe]

Author: El Samuko
In menu: Colors / Heatmap...
Source code here

The principle of this plugin is: it converts the image into the YUV color space and then rotates the U-V-coordinate system by 30°.
Then it shifts and scales the resulting U-part to the common 0-255 range.
The result is an image where warm colors become white and cold colors black.
It can be used then as layer mask for other filter operations, e.g. if you want to apply a warming filter only to cold colors.

Compiled for Gimp-2.10.22 Win_64bit: MareroQ

Wednesday, January 13, 2021

Ofn Luminosity Masks Ver.1.3

 Ofn Luminosity Masks []

Author: Ofnuts
In menu:  

Select / Luminosity / Custom / Sample curve
Select / Luminosity / Raw luminosity
Select / Luminosity / Patdavid / Lights / L
Select / Luminosity / Patdavid / Lights / LL
Select / Luminosity / Patdavid / Lights / LLL
Select / Luminosity / Patdavid / Darks / D
Select / Luminosity / Patdavid / Darks / DD
Select / Luminosity / Patdavid / Darks / DDD
Select / Luminosity / Patdavid / MidTones / M
Select / Luminosity / Patdavid / MidTones / MM
Select / Luminosity / Patdavid / MidTones / MMM

Website author here.

The rules of use are contained in the files Doc - just a fragment here:


This plug-in creates a selection mask based on the luminosity of pixels.

These selection masks are called "Luminosity masks" and are a very powerful technique to perform smooth and natural color changes in a picture. This technique is very well explained in PatDavid's canonical tutorial on the subject.

This plug-in creates the masks shown in the tutorial, among others

Unlike the tutorial, and unlike most Gimp scripts based on this tutorial,

  • The script creates only one mask at a time.
  • The mask is not created by addition/composition of other masks, but by applying directly the equivalent curve with the Curves tool.
  • The script creates a mask using the current state of the layer. The tutorial and the scripts create all the masks once, usually on the initial state of the image, so when the masks are used successively, the pixels remain selected based on their initial luminosity and not on the luminosity they reached following the previous edits (unless you redo all the masks of course).

A side benefit of the single-mask approach is that the selection can be automatically set from the mask and this saves a few mouse clicks."....


 Image created by Ofnuts.

Equal Luminosity Masks Ver. 1.2

 Equal Luminosity Masks [].

Author: David Marsden
In menu: Layer / Mask / Equal Luminosity Masks...

Create 10 Luminosity Masks -  discussed: here & pdf:  here.
The plugin checks if there is a pre-existing selection and if so, saves it to a channel.
It then makes a copy of the image, equalizes the copy and desaturates it.
Using a series of 10 equally spaced spline curves it creates 10 channels named Lum 0 to Lum 9.
These are used to make 10 layers (Lum 0 to Lum 9) each of which has a mask controlling the range of luminosity that can be adjusted in that layer.
Layer 0 permits adjustment of the darkest regionsand layer 9 the lightest.


Create Layer Mask From Ver.1.0

 Create Layer Mask From []

Author: Dmitry Dubyaga
In menu: Layer / Mask / Create Layer Mask from...
               Layers / Create Layer Mask from...

This plugin allows you to create layer mask from another layer mask.
Or create layer mask from grayscale copy of layer.
I hope this plugin will be useful for someone else.




Color to Mask Pro Ver.1.0

Color to Mask Pro []

Author: Andrey [aka: "Efenstor" Pivovarov"]
In menu: Layer / Mask / Color to Mask Pro...

A tool for masking out single-colored backgrounds.

* The two-step operation allows easy manual corrections
* Masks background color and (optionally) drop shadows
* All thresholds are soft
* Edge compression
* Color spill correction (semi-manual) 

Luminosity Masks

 Luminosity Masks by Saul Goode & Patrick David for Gimp-2.10

Create Luminosity Masks for an image.
Originally authored by Patrick David re-coded by Saul Goode to honor selection and layer offsets will isolate light, mid, and dark tones in an image as channel masks.
Adapted from tutorial by Tony Kuyper (originally for PS).

If you want to understand the use of masks, you should absolutely read: Getting Around in GIMP - Luminosity Masks Revisited [also in the attachment].



Author: Saul Goode
In menu: Layer / Mask / Luminosity Masks (Saul Goode)



Author: Patrick David
In menu: Layer / Mask / Luminosity Masks (Pat David)

Pdf - Luminosity Masks Revisited by Patrick David:

Sunday, January 10, 2021

Luminosity Mask Drive Thru

 Author: Charles Bartley

Luminosity Mask Drive Thru

Python Plugin For Creating Luminosity Masks In GIMP.

For more information or answers to questions, follow this link.

Images by Charles Bartley
Menu Location: Menu Bar - Layer / Mask

Friday, January 8, 2021

Red Eye Remover Win_64bit

 Red Eye Remover

Ver. 0.2 [redeye.exe]

Author: Robert Merkel
In menu: Filters / Enhance / Red Eye Remover Auto
               Filters / Enhance / Red Eye Remover...

To use the tool, select an area containing the eye with the
rectangular selection tool, and then select "Red Eye Remover" under
Filters/Misc.  You can choose the sensitivity of the tool with the
dialog that appears , with higher meaning more areas are selected
as red-eye areas.  -255 means no change, +255 means the entire
selected area will be affected.  The default, 0, normally works
very well, removing red-eye while skin hair and other things you
might select by accident.  To speed the process up, you can use
"Auto Red Eye Remover" under Filters/Misc instead, which simply
applies the remover with the default sensitivity.

Based on a GIMP 1.2 Perl plugin by Geoff Kuenning
Patches and enhancements by Steve Joiner.

 Compiled for Gimp-2.10.22 Win_64bit: MareroQ


Ver. 0.3 [red-eye-removal.exe]

Author: Robert Merkel & Andreas Røsdal
In menu: Filters / Enhance / Red Eye Removal...

The plugin was included in the default GIMP-2.8, replaced in Gimp-2.10 with the Gegl operation.
This plug-in removes the red eye effect caused by camera flashes by using a percentage based red color threshold.  
Make a selection containing the eyes, and apply the filter while adjusting the threshold to accurately remove the red eyes.
Before applying the “Red Eye Removal” you must do a selection (lasso or elliptical) of the boundary of the iris of the eye(s) having a red pupil.
If you don't make this selection, the filter inform you that : “Manually selecting the eyes may improve the results


 Manually selecting the eyes:


If you don't make this selection:

Compiled for Gimp-2.10.22 Win_64bit: MareroQ

Focus Blur Ver.3.2.6 Win_64bit

 Focus Blur Ver 3.2.6 [focusblur.exe]

Author: Kyoichiro Suda
In menu: Filters / Blur / Focus Blur...
Source code here.

 Focus Blur plugin create blurring effect, a kind of called DoF.
This plugin makes a out of focus with luminosity and depth, like a sight or lenses.
It can be used with depth map, depth fakes and shine effect.
Also it can work as simple and applicable blur.    

Same plugin version compiled in two different orientations:

1. Orientation HORIZONTAL:


Compiled by Onkel Hatti (in 2013 - but still working for Gimp-2.10)


2. Orientation VERTICAL:


Compiled for Gimp-2.10.22 Win_64bit: MareroQ