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Re: Interior viz

Post Sun Aug 02, 2009 12:05 am

Hi !

Good work but the ies effect from the spot are not really good , you can get a better effect :wink: .

The light bloom give a very realistic result .
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Gabich
 
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Re: Interior viz

Post Sun Aug 02, 2009 11:52 am

Gabich wrote:the ies effect from the spot are not really good , you can get a better effect :wink: .


yeap. It's a bit hard to have control of the final effect when simulating this. I'll try other shapes for the reflacting plane that make the distorcion in the spotlight. And maybe a bit smaller angle of the spot open angle.

thanks for your reply Gabish! :)
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cyberlecs
 
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Re: Interior viz

Post Mon Aug 03, 2009 3:45 am

did you do the light bloom with yafaray or photoshop?
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cekuhnen
 
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Re: Interior viz

Post Mon Aug 03, 2009 4:06 am

cekuhnen wrote:did you do the light bloom with yafaray or photoshop?


No photoshop, only blender nodes! :wink:

I've rendered another image using direct light in clay render mode with no lights and background color white. And I've mixed them together using blender nodes.
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cyberlecs
 
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Re: Interior viz

Post Wed Aug 05, 2009 1:44 pm

Hi

updates:
I've tried another aproach to simulate ies. It's easier to control this one. :wink:
final_01.png


and another scene:
final_02.png


C&C are wellcome!
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cyberlecs
 
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Re: Interior viz

Post Wed Aug 05, 2009 7:35 pm

amazing work, specially the glow and the ies lights...i was wondering how you simulate
the ies effect...you talked about "reflecting shapes",i´ll be glad if you can share your technique...

thanks for share your work,...seeya
jarhead
 
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Re: Interior viz

Post Thu Aug 06, 2009 8:44 am

jarhead wrote:amazing work, specially the glow and the ies lights...i was wondering how you simulate
the ies effect...


I tried to adjust this tutorial for Yafaray.

I created a sort of IES map using Indigo to project an IES lamp from http://www.mrcad.com/blog-images/ies-lights.rar to an hemisphere.
Image
Then I used the resulting render as UV map for an hemispheric screen and I put a lamp in the center. Softer results are achieved using sphere lamp instead of point.
ies-test_02.png


Same as before, but using a cylinder instead of a sphere:
ies-test_01.png
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MarcoA
 
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Re: Interior viz

Post Thu Aug 06, 2009 4:42 pm

Very realistic , great work ! Just use less of lens distortion .Have you made the armchair?
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Gabich
 
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Re: Interior viz

Post Fri Aug 07, 2009 1:47 am

jarhead wrote:amazing work, specially the glow and the ies lights...i was wondering how you simulate
the ies effect...you talked about "reflecting shapes",i´ll be glad if you can share your technique...

thanks for share your work,...seeya


thanks marcoA for your explanation about faking ies.


I've tried two ways of faking ies.

On the fist post I've tried the method provided by Gabich.
It's better to take a look at his works' topic his result is much better than my ones. :wink:
http://www.yafaray.org/community/forum/viewtopic.php?f=5&t=1813&start=15
You use "radial wave-like" surface with a glass material that will refract the light.
02a.png
02a.png (15.06 KiB) Viewed 18099 times



The other method (last images) is using an opacity map to filter the light. (how marcoA explained)
I've used this topic as a reference. http://forum.asgvis.com/index.php?topic=6244.0
01a.png
01a.png (8.28 KiB) Viewed 18099 times


I think it's important to talk of all methods because you can get good results with both of them.
It's a advice to play with the spotlight and change his Z position and change the spot angle, (spotSI) the final effect can change a lot.



Gabich wrote:Very realistic , great work ! Just use less of lens distortion .Have you made the armchair?

thanks again. And about the armchair, no. It's evermotion, from collection number 5.
Last edited by cyberlecs on Fri Aug 07, 2009 6:34 pm, edited 1 time in total.
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cyberlecs
 
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Re: Interior viz

Post Fri Aug 07, 2009 9:44 am

cyberlecs wrote:I've tried two ways of faking ies.

On the fist post I've tried the method provided by Gabich.
[...]
The other method (last images) is using an opacity map to filter the light. (how marcoA explained)


The method I used is intended to use actual IES maps and translate them into something that yafaray can use (waiting for the direct support for IES files). The images I attached in the previous post are obtained using the lamp nr.19 in the preview list.

This one is made using nr.12.
ies-test_03_IES12.png
ies-test_03_IES12.png (127.71 KiB) Viewed 18076 times


To get the light map I used Indigo or Luxblend as well, obtaining the same results.
A little radial blur on gimp can reduce the noise.
Attachments
IES-12.png
IES-12.png (53.92 KiB) Viewed 18076 times
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MarcoA
 
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Re: Interior viz

Post Fri Aug 07, 2009 6:33 pm

more IES tests using images as an opacity map.

with the last image provided by MarcoA
02.png
02.png (56.41 KiB) Viewed 18042 times


with images from the asgvis forum
01.png
01.png (54.69 KiB) Viewed 18042 times

03.png
03.png (49.06 KiB) Viewed 18042 times


and here the opacity plane material setup.
ies.png
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cyberlecs
 
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Re: Interior viz

Post Fri Aug 07, 2009 8:31 pm

@_@

That's smart walkaround of yafaray's lack of ies. love this. will test it.
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xelptic
 
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Re: Interior viz

Post Mon Aug 10, 2009 10:42 am

Really good renders!
Congratulations!

Greetings
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Arkinauta
 
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Re: Interior viz

Post Mon Aug 10, 2009 3:09 pm

Hey guys,thanks for sharing...
I did some tests ,i tried with both tecniques,first using the geometry and glass material but i can´t get good results,maybe the problem was in the way i built the geometry,then i tried with the plane with opacity material working as a filter and then the things started to work,...
i start with a grayscale opacity map done at randon but the results were horrible,with a lot of noise and some strange artefacts,even pushing up the parameters i cant get the desire results,IMO my opacity map was the cause of the noise so i downloaded the map shared by MarcoA and finaly works....then i start to think about the diferences between the maps...the first thing i noticed was the tone,my map was brighter than the MarcoA´s map,maybe that´s the reason. ill do more tests and post the results here.

Here are some renders i did, the first without the opacity map just to find a good relation time/quality:

cena_sem_filtro.jpg
without filter


and here using my map as filter:

cena_com_filtro.jpg
with my map


here with MarcoA´s map:

cena_com_filtro_ies_marcoA.jpg
MarcoA´s map


the map file used in the first renders:

ies_map_teste2.jpg
my map file
ies_map_teste2.jpg (13.67 KiB) Viewed 17953 times
jarhead
 
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