Digital Earth

Demo shots	1080p

Overview

A renderer that generates highly realistic images of the Earth from outer space. (Note: Requires a beefy GPU to run, RTX 3070 or above)

Rendering is done with Path Tracing in participating media. + Uses measured data for density and light response (extinction coeficients and scattering functions) of atmospheric gases. + Rayleigh scatterers: Nitrogen (N2), Oxygen (O2), Carbon Dioxide (CO2) + Mie scatterers: Water vapour + Other absorbers: Ozone (O3) + Textures from NASA for ground albedo, water bodies, topology, clouds. + Spectral rendering to get an accurate representation of colours. + OpenDRT for conversion from HDR->SDR (https://github.com/jedypod/open-display-transform) + Camera Response Function for filmic look

Taichi Lang documentation: https://docs.taichi-lang.org/

Step-by-step Installation

1. Install dependencies of the renderer. (Assuming you have Python)

pip install -r requirements.txt

1. Then download textures from here (google drive) and drag them into the textures folder.

2. Finally, to run Digital Earth,

python main.py

Controls

• Drag with your right mouse button to rotate the camera.
• Press W/A/S/D to move the camera.
• Press 'Q' to rotate the camera to Earth's surface
• Press 'E' to reset camera rotation
• Press SPACE to go up
• Press CTRL to go down
• Press P to save a screenshot.