SketchStyler

Sketch an idea using black, red, green, and blue pens, and then change the colors to fit your theme. For example,

conversion was made with the command

$ rgb2.py -r (114,0,16) -g (114,41,0) -b (0,73,114) -i original.jpg -o output.png

where rgb2.py script was told to

• replace red with dark red (114,0,16)
• replace green with dark orange (114,41,0)
• replace blue with dark cerulean (0,73,114)
• use white as transparent alpha channel.

Installation

As I haven't tested this thoroughly, it might be a good idea to use a dedicated virtual enviroment first. For example, make a new conda env called rgb:

$ conda create --name rgb

activate it

$ conda activate rgb

and install pip

$ conda install pip

Then clone this repo (to current location)

$ git clone https://github.com/mrbarkis/SketchStyler.git

and then install using

$ pip install ./SketchStyler

(or run setup.py within SketchStyler folder)

You should now be aple to run the main script

$ rgb2.py -h

or to use the modules. For example, install jupyter and run the example notebook, as in

$ conda install jupyter
$ cd SketchStyler
$ jupyter notebook example.ipynb

Tips

1. Whitelines paper and its app makes digitizing sketches a breeze.
2. Gimp's 'Filters -> Blur -> Mean-Curvature-Blur' can work wonders as well. It can smooth both the colors and the edges in a natural-seeming fashion. To use it on the edges, first select 'Layer -> Mask -> Add layer mask -> Transfer layer's alpha channel', and then apply the filter on the layer mask. As an example,