TheSpyGeek / procedural-stylization

Procedural-stylization

Description

This repository is about non-photorealistic rendering. Our goal was to stylize 3D scene at the step of compositing. To do so we use marks that we paste in image space on our object. But this technique implies problem during the animation of the camera. In order to solve this problem, we used anchor points to anchor the marks.

Folders

• gratin
  • pipeline folder with the pipelines to stylize
  • nodes folder with the nodes to add in gratin to make the pipelines work
• notes files with some notes about new ideas, notes on papers, ...
• presentation slides of the presentation
• rapport report files
• Resultats somes results of our technique

Compile

Build gratin:

• install qt5, eigen and openexr libs
• get source code: svn checkout https://scm.gforge.inria.fr/anonscm/svn/gratin/trunk
• cd trunk && mkdir build && cd build && cmake .. && make

Compile procedural node

• edit gratin/nodes/proceduralStyle/CMakeLists.txt
• modify the path so that it links to your gratin build directory
• edit QString of the node contained in the file <stylization_vX.cpp> to your path to this node
  • gratin/nodes/proceduralStyle/stylization_vX/stylization_vX.cpp
• in proceduralStyle folder do:

mkdir build
cd build
cmake .. && make

• add the path gratin/nodes/proceduralStyle/build/nodes/lib and add gratin/nodes/proceduralStyle/nodes/customs/ (Tools >> Manage node paths... >> Add path)
• Note: the node in Gratin is in the stylization folder

Examples

• pipeline with all function usefull: gratin/pipelines/template/template1.gra

G-Buffer

As input, there is the G-buffer containing the matrices of the camera, the positions, the normals, the tangents, the depth.

Color Map

We can compute the color map. In our case, we use a simple shading and then with procedurals noises we modify it in inserting some variations.

Anchor points

The anchor points are computed in a node called "FractalizedWorley". In the example, we apply some variation to adapt these anchor points according to the normals of the object.

Splat

The splat can be a 2d image loaded from the computer or it can be rendered as a texture. We use then a mipmap to avoid aliasing problem during the stylization.

Models and splats

• the splats used are in the folder: gratin/data/imgs/
• the models used are in the folder: gratin/data/models/

but you can use your owns

Presentation use

1. install npm (4.0 or later)

2. go to presentation folder

cd presentation/

3. Install dependencies

npm install

4. Serve the presentation and monitor source files for changes

npm start

5. Open http://localhost:8000 to view your presentation

You can change the port by using npm start --port=8001.

6. In the slides press 's' to display presentator view

Common issues

• The pipeline does not open. The program segmentation fault.
• There is nothing displayed in all the nodes of the pipeline.
• The last node of the pipeline stylization_vX does not display anything.

The pipeline does not open. The program segmentation fault.

Check if you have added the path to the compiled nodes (Tools >> Manage node paths...) See section procedural nodes

There is nothing displayed in all the nodes of the pipeline.

You have to load in the first node 'AdvancedGBuffers' of models. You have some models in the folder gratin/data/models/

The last node of the pipeline stylization_vX does not display anything.

Check if you have changed the path of your shader in the stylization_vX..cpp to your path (as in the section Compile procedural node)