https://github.com/pollination/sky-view

Recipe for computing sky view.
https://github.com/pollination/sky-view

Last synced: 4 months ago
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Recipe for computing sky view.

• Host: GitHub
• URL: https://github.com/pollination/sky-view
• Owner: pollination
• License: other
• Created: 2021-08-06T19:53:48.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2023-11-30T19:55:33.000Z (over 2 years ago)
• Last Synced: 2025-09-30T19:59:45.196Z (9 months ago)
• Language: Python
• Homepage:
• Size: 19.5 KB
• Stars: 0
• Watchers: 2
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# sky-view

Recipe for computing Sky View (aka. Sky Component).

Sky View is defined as the percent of the sky dome seen by a surface. This can

be computed either using a uniform (default) sky or a cloudy sky. Note that sky

view's definition means that sky regions directly in front of the surface carry

more weight than those at the sides.

Note that computing cloudy Sky View for a vertically-oriented geometry (horizontal

sensor direction) will yield Vertical Sky Component (VSC) as described by the UK

Building Research Establishment (BRE). VSC is defined as the ratio of cloudy sky

illuminance falling on a vertical wall to the simultaneous horizontal illuminance

under an unobstructed sky [Littlefair, 1991].

Also note that this recipe still respects the transparency of objects, reducing

the percentage of the sky visible through a certain geometry by the transmittance

of that geometry.