[Radiance-general] DGP on 172 fish-eye image

[Raquel Viula]

Hi Alstan,
That¹s great to know, thank you. Yes, I have vertical eye illuminance
measurements. I think it¹s probably a good idea to estimate what the error
might be via simulation.

Best Regards

Raquel



Raquel Viula

PhD candidate



TU Delft | Faculty of Architecture and the Built Environment |

Architectural Engineering and Technology

Julianalaan 134, 2628 BL Delft, The Netherlands | P.O. Box 5043 2600 GA
Delft

From:  "J. Alstan Jakubiec" <alstan at jakubiec.net>
Reply-To:  Radiance general discussion
<radiance-general at radiance-online.org>
Date:  Wednesday 15 March 2017 06:18
To:  <radiance-general at radiance-online.org>
Subject:  Re: [Radiance-general] DGP on 172 fish-eye image

    
 

Hi Raquel, 
 
 

I would say yes. Just make sure that the view in the HDR header is
appropriate or you specify it inline: evalglare -vta -vv 172 -vh 172
image.hdr
 

This may slightly underestimate vertical eye illuminance calculated by the
software, skewing your results a bit; however, 172 is close enough to 180 in
terms of view angle that the error is likely minimal. Still, if you have
vertical eye illuminance measurements, supply them inline with the -i flag
as well.
 
 

Best,
 

Alstan
 
 
 
On 3/14/2017 9:40 PM, Raquel Viula wrote:
 
 
>  
>  
> Dear all,
>  
> I have a question regarding Evalglare. Hopefully this is the right mailing
> list to ask. 
>  
> Can DGP be calculated for a -vta fish-eye photo capture that has a view angle
> of 172 degrees? The manual says that Evalglare can be run for an image cut
> horizontally given an externally measured vertical eye illuminance and Y max
> and Y min coordinates but does not mention the possibility of using an image
> that is also cut vertically, or shall I say, all around.
>  
> Thank you for your help.
>  
>  
> 
>  
>  
>  
> 
> Best Regards
>  
> 
> Raquel
>  
> 
> 
>  
>  
> 
> Raquel Viula
>  
> 
> PhD candidate
>  
> 
> 
>  
>  
> 
> TU Delft | Faculty of Architecture and the Built Environment |
>  
> 
> Architectural Engineering and Technology
>  
> 
> Julianalaan 134, 2628 BL Delft, The Netherlands | P.O. Box 5043 2600 GA Delft
>  
>  
>  
>   
>  
> _______________________________________________
> Radiance-general mailing list
> Radiance-general at radiance-online.orghttp://www.radiance-online.org/mailman/lis
> tinfo/radiance-general
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