Comments on: Ambient Occlusion Tutorial. http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/ Fresh Blender News, Every Day Tue, 02 Dec 2008 01:39:23 +0000 http://wordpress.org/?v=2.6.3 By: fromlugdunum http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-18555 fromlugdunum Wed, 15 Nov 2006 10:03:18 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-18555 link here http://www.solo2design.com/ImageWeb/AO_Tutorial01.pdf link here http://www.solo2design.com/ImageWeb/AO_Tutorial01.pdf

]]> By: David Revoy http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11877 David Revoy Mon, 02 Oct 2006 18:07:10 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11877 This Pdf of Lindsay was greatly usefull to enlight some shadows I had in my head about some AO option. ( as Roubal for ambiant button, lol : me too ! ) Thanks ! Roubal : ( about DOF discution ) When I work on my " Little Fairy" I try a lot to have a good DOF with BlenderInternal, it's possible in still image, but after all my test the DOF couldn't be effective in animation ( camera mouvement ). Cause it's to hard with the Node editor to get a focal point during mouvement. (method based on selecting a part of the Z layer with a gradient gradient and apply a blur on it, this for hight Z value[simulate front of camera] and low Z value[simulate far object from camera] or inverse :-) ) Only way I found, to glue a blured picture on the back/and some alpha *.PNG picture on the front to get the trick during a travelling from left to right... No camera rotation possible :-D This Pdf of Lindsay was greatly usefull to enlight some shadows I had in my head about some AO option. ( as Roubal for ambiant button, lol : me too ! ) Thanks !

Roubal : ( about DOF discution )
When I work on my " Little Fairy" I try a lot to have a good DOF with BlenderInternal, it's possible in still image, but after all my test the DOF couldn't be effective in animation ( camera mouvement ). Cause it's to hard with the Node editor to get a focal point during mouvement. (method based on selecting a part of the Z layer with a gradient gradient and apply a blur on it, this for hight Z value[simulate front of camera] and low Z value[simulate far object from camera] or inverse :-) )
Only way I found, to glue a blured picture on the back/and some alpha *.PNG picture on the front to get the trick during a travelling from left to right… No camera rotation possible :-D

]]> By: Matt http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11829 Matt Mon, 02 Oct 2006 01:27:21 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11829 Toontje, You could probably call radiosity GI, but it doesn't have many of the features that people have come to expect from GI these days, like caustics. Blender's radiosity is also nearly useless apart from very specific tasks, and flickers terribly in animation :) Toontje, You could probably call radiosity GI, but it doesn't have many of the features that people have come to expect from GI these days, like caustics. Blender's radiosity is also nearly useless apart from very specific tasks, and flickers terribly in animation :)

]]> By: punkfrog http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11828 punkfrog Mon, 02 Oct 2006 01:13:56 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11828 I really dont like the way blender handles dof through the node editor, yafray has a loveley system why not code a similar one for blender? I really dont like the way blender handles dof through the node editor, yafray has a loveley system why not code a similar one for blender?

]]> By: ROUBAL http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11819 ROUBAL Sun, 01 Oct 2006 21:59:00 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11819 @Toontje You are right about GI and Radiosity. I thought of it also. I must add something : There is also a built-in DOF feature since we have the node compositor. It is possible to set min and max distances for the blur filter, and get a good depth of field effect ! It is not very progressive, but a better effect can be achieve using several blur filter nodes. I have no example file, because I have just played a bit with it, but it works well. Philippe. @Toontje

You are right about GI and Radiosity. I thought of it also.

I must add something : There is also a built-in DOF feature since we have the node compositor.

It is possible to set min and max distances for the blur filter, and get a good depth of field effect !

It is not very progressive, but a better effect can be achieve using several blur filter nodes.

I have no example file, because I have just played a bit with it, but it works well.

Philippe.

]]> By: damo http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11818 damo Sun, 01 Oct 2006 21:29:18 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11818 Thanks for the great info - helps a lot! I'm wondering how he got the glowing edges where the light is really bright in that bird image (the brightness "spill-over"). Is that post-processing with photoshop or is that some kind of setting you can turn on in blender? Thanks for the great info - helps a lot! I'm wondering how he got the glowing edges where the light is really bright in that bird image (the brightness "spill-over"). Is that post-processing with photoshop or is that some kind of setting you can turn on in blender?

]]> By: kijja http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11802 kijja Sun, 01 Oct 2006 15:36:54 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11802 I love his bird model. How can he post the bird model trickat blenderartists. I love his bird model. How can he post the bird model trickat blenderartists.

]]> By: Sparkus http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11796 Sparkus Sun, 01 Oct 2006 13:16:24 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11796 Well... I don't know... The tut tells nothing really new (well it's almost the same information as on the blender website). And the screenshots can't be read because the resolution is too low. Perhaps for a beginner it's useful, but for people who already played around with AO, it's nothing new... Well… I don't know… The tut tells nothing really new (well it's almost the same information as on the blender website). And the screenshots can't be read because the resolution is too low.

Perhaps for a beginner it's useful, but for people who already played around with AO, it's nothing new…

]]> By: toontje http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11795 toontje Sun, 01 Oct 2006 12:55:09 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11795 To all you guys complaining that there is no GI in Blender: There is GI in Blender! What else do you call Radiosity? GI is just a general term for all techniques using indirect lighting. Maybe you guys mean OTHER GI techneques like path tracing, photon caching etc? To all you guys complaining that there is no GI in Blender:
There is GI in Blender! What else do you call Radiosity? GI is just a general term for all techniques using indirect lighting. Maybe you guys mean OTHER GI techneques like path tracing, photon caching etc?

]]> By: ROUBAL http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11792 ROUBAL Sun, 01 Oct 2006 11:36:22 +0000 http://www.blendernation.com/2006/10/01/ambient-occlusion-tutorial/#comment-11792 Hi! Good tutorial ! After 2 years using Blender, I have finally understood what the Amb slider was used for. Shame on me !o) Thank you Lindsay! Philippe. Hi!

Good tutorial !

After 2 years using Blender, I have finally understood what the Amb slider was used for. Shame on me !o)

Thank you Lindsay!

Philippe.

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