Sunday, September 25, 2022

Halloween Animated Scene

 (MrQ Halloween animated scene.py)

Author: MareroQ

This plugin was inspired by the three Pocholo plugins:
pm_animated_dancing_ghost.py located here: http://gimpchat.com/viewtopic.php?f=9&t=20106
pm_create_a_halloween_scene.py located here: http://gimpchat.com/viewtopic.php?f=9&t=19656
pm_halloween_graveyard_scene.py located here: http://gimpchat.com/viewtopic.php?f=9&t=20126


In menu: Filters ➤ Animation ➤ Halloween animated scene...

Create a halloween (although it all depends on the font type dingbat used) animated scene.
For halloween recommended use font Trick or Treat (free for non-commercial uses).
 








Saturday, September 24, 2022

Color Balance & Brightness-Contrast

 (MrQ C-B & B-C.py)

Author: MareroQ

In menu: Colors ➤ Color Balance & B-C...

The Color Balance plugin modifies the color balance of the active layer.
You can use simultaneously by using the sliders Transfer: Shadows (darkest pixels), Midtones (midtones) and Highlights (brightest pixels).

In the standard Gimp plugin, you can only select one of them in turn.

 
 Overall, the B-C (Brightness-Contrast) tool is great for "fast and dirty" adjustments in seconds,
while the changes in Color Balance are not drastic (suitable for correcting dominant colors in digital photos).
Now you can select and compare or apply any combination in one plug.
 



Wednesday, September 21, 2022

DIEGO COLOURS Modify LCS with Preview.

 (DIEGO_COLOURS_Mod_LCS-P.py)

Author: Diego Nassetti [dinasset]

Preview added by MareroQ based on Claude Lion code.
 
 
Source: GimpScriptsCom Pack 03 position 45. 
Discussion on the Gimp Chat forum here.

In menu: Diego ➤ Colours ➤ Modify LCS with preview...

This filter allows to enhance at the same time Luminosity, Contrast and Saturation of an Image.
The user sets up the “target” values and the filter can:
– either use an auto-adjustment based on the distance of current values from target
– or approaching the target in a “strong”, “normal” or “weak” action (user choice).
 
Ver.1.0 
(21/09/2022)


 
Ver.1.1
(22/09/2022)
Changes (made by MrQ):

- add more Preview types: Full, Forward Vertical, Backward Vertical, Forward Horizontal, Backward Horizontal. 

 


Tuesday, September 20, 2022

DIEGO COLOURS Transfer-Colours Ver.1.12

 (DIEGO_COLOURS_TransferColours_srgb.py)

Author: Diego Nassetti [dinasset]


Source code on Gimp Learn here.

Discussion on the Gimp Chat forum here.
 
 In Menu: Diego ➤ Colours ➤ Transfer-Colours...

Plugin returns a new image as a duplicate of the target image with colours modified according to the source image.
 
Change in Ver.1.12:
Combine into one file: DIEGO_COLOURS_TransferColours.py with required diego_stretch_rgb_colours.py.
 


 

Wavelet Sharpen Ver.0.1.2 Win_64bit

 (wavelet-sharpen.exe)

Author: Marco Rossini

Source code:  Archive GIMP Plugin Registry  https://github.com/pixlsus/registry.gimp.org_static

In menu: Filters ➤ Enhance ➤ Wavelet sharpen ...

The wavelet sharpen plugin increases apparent sharpness of an image. The amount of unsharpness in the original image can be taken into account.

From the plugin author's information:

There are two circumstances that makes it necessary to use the sharpen filter:

1. To reduce the effects due to aliasing of an picture which is in focus.
   a) Set the amount of sharpening using the slider.
   b) You may want to have the checkbox 'Sharpen luminance only' activated in order to avoid having colour artifacts (especially in noisy images).
   c) The sharpening radius can be left at 0.5.

2. To sharpen a picture which is out of focus.
   a) Set the amount of sharpening rather high (at first).
   b) Adjust the sharpening radius using the slider to choose the frequency  part in the image which is to be increased in contrast. This means for  blurred pictures you may want to set the value high (which sharpens slow-ly varying image features, leaving high frequency noise alone). Use low values if the image has many details.
   c) Set the sharpening amount back to a value that pleases your eye.
   d) You may want to have the checkbox 'Sharpen luminance only' activated in order to avoid having colour artifacts (especially in noisy images). 
 

 

Compiled for Gimp-2.10 by Samj.

Wavelet denoise Ver.0.3.1 Win_64bit

 (wavelet-denoise.exe)


Author: Marco Rossini


Source code:  Archive GIMP Plugin Registry  https://github.com/pixlsus/registry.gimp.org_static


In menu: Filters ➤ Enhance ➤ Wavelet denoise ...

The wavelet denoise plugin is a tool to reduce noise in each channel of an image separately.


From the plugin author's information:

It works for both Grayscale and RGB (full colour) images, including alpha channels. The plugin dialog allows to adjust several parameters.

1. First, the choice has to be made over what colour model is to be used. There   are three possibilities (maybe there will be more in the future):

   a) RGB     (red-green-blue)
   b) YCbCr   (luminance-blueness-redness)
   c) CIELAB  (lightness-chroma)

   YCbCr and CIELAB allow separate reduction of luminance and chroma (colour) noise.

2. The preview mode can be selected. Either all channels can be selected or the current active channel which is then displayed in grayscale or colour.
3. Select the channel you want to denoise.
4. The sliders adjust the the threshold for denoising. The softness controls the softness of the thresholding. The greater the softness, the more noise remains in the image.

For camera pictures I advise to use YCbCr mode (which is nearly lossless) and to at least denoise the Cb and Cr channels to reduce the chroma (colour) noise.
Cameras shooting in JPEG mode normally have chroma noise already reduced. If desired, the luminance noise can be reduced. This channel usually contains most of the fine structures in the image and should mostly be left alone.


Compiled for Gimp-2.10 by Samj.

Wavelet decompose Ver.0.1.2 Win_64bit

 (wavelet-decompose.exe)

Author: Marco Rossini

Source code:  Archive GIMP Plugin Registry:  https://github.com/pixlsus/registry.gimp.org_static

In menu: Filters ➤ Generic ➤ Wavelet decompose ...

Decomposes the image into wavelet scales.

From the plugin author's information:

The wavelet decompose plugin decomposes a layer of an image into layers of
wavelet scales. This means that you can edit the image on different detail
scales (frequencies). The trivial recomposition of the image can be done by
GIMP's layer modes so you can see the results of your modifications instantly.
Among the applications are retouching, noise reduction, and enhancing global
contrast.

Wavelet scales:

An image can be transformed into a set of wavelet scales. There are detail
scales and one residual. The detail scales contain the image details of a their
scale size. This means that scale 1 contains only image details of the smallest
scale. Scale 2 details are larger and scale 3 details even larger (and so on).

This plugin computes these scales and creates a new layer for each one. The
recomposition is the addition off all scales which is done by GIMP using the
grain merge layer mode. You can then paint the scales with your favourite tool,
using (128,128,128) as neutral colour (for the details, not the residual).
Values below neutral darken, values above lighten. The most straightforward
thing to do is to use the paintbrush tool with the  neutral colour and use
different brushes and opacities. That way you erase details.
 

 
Compiled for Gimp-2.10 by Samj.