Hi Maria, Thank you for following good list etiquette and posting your image on a website. You may want to check to be sure that you are subscribed with the HDRI mailing list <http://www.radiance-online.org/community/mailing-lists>, as I had to manually pass your post onto the list. We don't seem to have you in our system, at least not at this address.
I can't say seeing your light probe which is just shown as white out the window, but mksource will tend to create multiple sources for long, skinny regions. Reducing the -d setting will reduce the maximum number of sources created in this way. Your threshold setting also seems to be quite low, and you might consider letting mksource determine this threshold automatically. The general idea with mksource is to replace only the very brightest regions in a distant environment map with direct sources. The rest will be handled well enough in the indirect calculation. Which brings me to my last point -- are you giving mksource the room description as well as the exterior environment? It completely ignores the local geometry, using only your environment map (light probe) to decide where to place sources. Perhaps you could post that? Best, -Greg > From: "María Beatriz Piderit" <[email protected]> > Date: January 20, 2014 10:36:53 AM PST > > Hi all, > > I’m trying to extract a concentrated light source from HDR picture of the sky > using mksource. > I run the following script: > oconv materials.mat geometry.rad lightprobe.rad > scene.oct > mksource -d 1000000 -t 2 -a 5 scene.oct > srcs.rad > oconv -i scene.oct srcs.rad ground.rad > finalscene.oct > rpict -vth -vv 180 -vh 180 -vp 1.8 3 1.2 -vd 1 1 0 finalscene.oct > > finalsceneview.hdr > ra_tiff finalsceneview.hdr finalsceneview.tif > My results are weird (see > https://www.dropbox.com/s/2u4vnsi4ynw0ncz/finalsceneview02.tif) > Do you have any idea what is wrong? a problem with the capture of the sun? > or rather a matter of parameters ? > Is it normal that mksource finds several sources ? (see > https://www.dropbox.com/s/n7y97ppm1ip1gky/srcs.rad) > > Thanks in advance for your help ! > > Beatriz Piderit M. > Arquitecta UBB, MA, PhD UC Louvain > > Departamento Diseño y Teoría de la Arquitectura > Universidad del Bio-Bio Concepción, Chile
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