Ossium

A volume rendering application to display 3D volumes created from DICOM files in the browser, using WebGPU. Two rendering techniques are implemented: Multi-Planar Reformatting (MPR) using maximum intensity projection and Shaded Volume Rendering (SVR) using Blinn-Phong lighting. The application must be viewed in a browser that supports WebGPU and has it enabled.

Installation and Usage

Clone the repository and install the dependencies:

git clone https://github.com/fraserlove/ossium.git
yarn install

Build the application and start the development server:

yarn dev

The application runs on port 8081 and can be accessed in the browser by going to http://localhost:8081.

Generating a Transfer Function

The transfer function is a 1D texture that maps the intensity values of the volume to colours. It is stored in a file with the .tf extension.

To generate a transfer function, run the following command:

python scripts/tf_generator.py

This will generate a transfer function file with the default settings. The transfer function can then be loaded into the application using the Load Transfer Function button in the GUI.

Keybindings

Action	Controls
Rotate	Left Click + Drag
Pan	Right Click + Drag
Zoom	Vertical Scroll
Cine	Horizontal Scroll
Change Light Direction	Shift + Left Click + Drag (SVR only)

Examples