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(New page: == Basic actions == * Create squares, ellipses, circles ** This is done by '''stroking''' paths. Eg. to create a rectangle: **# If needed, create a new layer. **# Create a rectangle using ...) |
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** Instead of stroking the path, the selection can be stroked as well with '''Edit → Stroke Selection'''. 3rdd step above can be skipped in that case. |
** Instead of stroking the path, the selection can be stroked as well with '''Edit → Stroke Selection'''. 3rdd step above can be skipped in that case. |
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** ''The GIMP'' keeps track of all used path, so converting to path is handy to reuse previous paths. Check the dialog box ''Layers, Channels, Paths, Undos''. |
** ''The GIMP'' keeps track of all used path, so converting to path is handy to reuse previous paths. Check the dialog box ''Layers, Channels, Paths, Undos''. |
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== Plugins and scripts == |
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=== Fourier plugin === |
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* Download the [http://registry.gimp.org/node/19596 fourier plugin]. |
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* Install a few packages: |
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sudo apt-get install libfftw3-dev libgimp2.0-dev |
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* Build and install the plugin: |
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make |
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make install |
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=== Descreen scriptfu === |
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* Download the [http://registry.gimp.org/node/24411 Descreen plugin]. |
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* Copy the script into {{file|~/.gimp-2.8/scripts}}. |
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* Restart gimp or select ''Scriptfu → refresh scripts''. The script appears in ''Enhance → Descreen''. |
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== How-To == |
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=== Remoe Moiré effect on a photo scan === |
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* Apply '''Filter → Blur → Gaussian Blur''' effect. |
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:* Pick method '''RLE''', and adapt radius until the moiré disappear ('''4''' or '''5''' px, possibly more). |
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Revision as of 18:10, 6 December 2015
Basic actions
- Create squares, ellipses, circles
- This is done by stroking paths. Eg. to create a rectangle:
- If needed, create a new layer.
- Create a rectangle using the Rectangle Select Tool.
- Transform selection into path with Select → To Path.
- Stroke the path with Edit → Stroke Path.
- Instead of stroking the path, the selection can be stroked as well with Edit → Stroke Selection. 3rdd step above can be skipped in that case.
- The GIMP keeps track of all used path, so converting to path is handy to reuse previous paths. Check the dialog box Layers, Channels, Paths, Undos.
- This is done by stroking paths. Eg. to create a rectangle:
Plugins and scripts
Fourier plugin
- Download the fourier plugin.
- Install a few packages:
sudo apt-get install libfftw3-dev libgimp2.0-dev
- Build and install the plugin:
make make install
Descreen scriptfu
- Download the Descreen plugin.
- Copy the script into ~/.gimp-2.8/scripts.
- Restart gimp or select Scriptfu → refresh scripts. The script appears in Enhance → Descreen.
How-To
Remoe Moiré effect on a photo scan
- Apply Filter → Blur → Gaussian Blur effect.
- Pick method RLE, and adapt radius until the moiré disappear (4 or 5 px, possibly more).