Comments on: Unsharp Mask & Ambient Occlusion

By: Justin Chambers

Justin Chambers — Thu, 17 Jul 2008 22:04:26 +0000

This is an incredible, quick and easy AO implementation. The simplicity and speed of the operation lends itself very well to real-time applications and games. As a post-process effect applied to the depth buffer you could get some really nice results.

By: Paul Caggegi

Paul Caggegi — Tue, 04 Dec 2007 02:17:16 +0000

Have been reading your weblog retrospectively. It amazes me how useful your documented experiments are. This is yet another handy hint. It also makes me see what an asset you are to the Blender community by going back and seeing what you’ve coded, knowing that there are features in more recent versions of the program that are all thanks to you.

By: Toni Grappa

Toni Grappa — Thu, 22 Feb 2007 09:17:42 +0000

I may be wrong, but it seems to me that the unsharp mask for instance in Ps works a little bit different than in your nodesetup. The main difference seems to be, that one take the blured version of the INVERTED picture and subtract it form the orginal one, not the difference of the origional blured and the original one.

Example file
http://uploader.polorix.net//files/30/unsharp_mask.blend

By: Billy

Billy — Wed, 14 Feb 2007 06:02:21 +0000

THANK YOU VERY MUCH!!!

By: Matt

Matt — Wed, 14 Feb 2007 05:37:20 +0000

ysvry: Look around the creases in the skin on the left side of the face, and around the collar. It’s a subtle ‘dirt shading’ effect, adding shadows in cracks and creases.

Billy: Woops, I think there was a problem with my internet when I uploaded it the first time, I’ve just re-uploaded it to the same location and I hope it works now!

By: Billy

Billy — Wed, 14 Feb 2007 05:03:22 +0000

Hey Matt!
This is simply Amazing!(like all your works)!
Thanks for sharing!
notice:
i cannot Download the Blend file or better i cannot open the blend file from this “Sharp mask and AO example blend file!
Whats wrong?
error message:”this zip commpressed folder is demaged”
can you post me a Link that works or post me the Blend file as Email Attachment?
Thanks

seeYa

all the best

Billy

By: ysvry

ysvry — Wed, 14 Feb 2007 04:36:30 +0000

sorry, but i dont see any diffrence in that example picture, can u put some red circles around the spot where we have to look?

By: thoro

thoro — Tue, 13 Feb 2007 09:55:58 +0000

Very interesting and useful. Thanks for sharing!

By: Matt

Matt — Sat, 10 Feb 2007 03:06:58 +0000

cheers, folks!

By: Rui Campos

Rui Campos — Fri, 09 Feb 2007 11:10:34 +0000

Thanks for these links you’ve been posting, I really find them useful.

And having a Blender Specific post is even better.

– Rui –

By: theeth

theeth — Fri, 09 Feb 2007 05:07:59 +0000

Very interesting read. The link explaining the USM filter was particularly enlightening.