GIMP-lens-blur

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GIMP plugin that add the ability to perform a lens blur, also known as Bokeh blur

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This is a GIMP plugin that add the ability to perform a **Lens Blur** (also know as **Bokeh Blur**).

This code is based on [Mike Pound's implementation](https://github.com/mikepound/convolve) created for [this Computerphile video](https://www.youtube.com/watch?v=vNG3ZAd8wCc). I changed the code to use **OpenCV** for performance gains.

Many thanks to Niklas Liebig for the alpha channel correction! :)

This plugin has been tested on Ubuntu 18.04 and GIMP 2.10.8.

## Requirements

To use this plugin you have to install the following dependencies in the Python environment used by GIMP:

`pip install numpy opencv-python`

## Install

1. Open the terminal, move to the GIMP plug-ins folder (usually `~/.config/GIMP/2.10/plug-ins`).

2. `git clone https://github.com/Davide-sd/GIMP-lens-blur.git`

3. `cd GIMP-lens-blur`

4. Change permission to allow execution: `chmod +x GIMP-lens-blur.py`

## Usage

![Lens Blur UI](https://raw.githubusercontent.com/Davide-sd/GIMP-lens-blur/master/images/lens-blur-ui.png)

1. Open GIMP and load the image you'd like to edit.

2. In the layer palette, select the layer you would like to apply the lens blur.

3. Go to `Filters/Blur/Lens Blur...`

4. Adjust the parameters:
    * **Radius**: The amount of blur to add.
    * **Components**: The more components, the better the final result, but the slower the computation. Even with 2 components the result is very nice.
    * **Gamma**: tweak the exposure to highlight bright spots.

5. Click `Ok`.

## TODO

1. Is it possible to implement a preview window?

GIMP-lens-blur

GIMP-lens-blur Latest Version Download

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