Wow, I have been thinking on doing this for a while... although I have no
idea where to start from.
Is it possible to calculate the Daylight Coefficients of the building; and
use the HDR image to generate sky vectors and calculate different options
for optimizing daylighting?
I am picturing a computer that, every 5 minutes, calculate the sky vector,
computes the interior lighting conditions, and simulates the different
lighting options performing a whole-building lighting control with no photo
sensors. Even more, maybe a whole neighborhood could use the same camera.
Nonsense?
Thanks for sharing!
···
2014-06-27 0:59 GMT-04:00 Joe Smith <[email protected]>:
Hi, Andy, thanks for sharing LBNL's sky mapping experiment!
Can you kindly advice on resources that elaborate on how to use HDR sky
image for daylight simulation? Does it involve specifying the HDR image,
rather than a "skyfunc", as the material identifier for the sky geometry?
How is the pixel value of a given point on the HDR image converted to
luminance value of the corresponding position on the sky?Thanks!
- JoeAndrew McNeil <[email protected]>于2014年6月27日星期五写道:
Hi Everyone,
LBNL has installed an HDR sky camera at our new FLEXLAB site:
http://flexskycam.lbl.gov. I've uploaded sample data, including hdr
images and csv datafiles, recorded by the camera for three days over the
past week( clear, partly cloudy and overcast). We're happy to share more
data with other researchers and daylight practitioners (but we don't have
much to offer yet).The images can be mapped to a Radiance sky for simulation under real sky
conditions. I have not used the sky HDR images yet, myself, so if anybody
uses them successfully please report back and share what you've done!Questions about the camera hardware and capabilities should be directed
to Chris Humann at Terrestrial Light.Best,
Andy_______________________________________________
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