Digital Earth

A renderer that generates highly realistic images of the Earth from outer space. GitHub Repo

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

• Camera Response Function for filmic look