5 replies to this topic

[eko]

Hi，How can I do this kind of noise(like this picture) by houdini .thanks

[jkunz07]

eko, on 02 July 2012 - 01:33 AM, said:

Hi，How can I do this kind of noise(like this picture) by houdini .thanks

I think you would want to use a noise function to drive shader displacements.  The veins vop would probably be a good starting place.

[jkunz07]

here's an attempt:



 NoiseySphereAttempt.hip   1.17MB   47 downloads

Basically, you should be trying to generate noise like this:

In the picture you provided it looks like a few noise functions are being multiplied to achieve greater variation.

Edited by jkunz07, 02 July 2012 - 06:24 PM.

[eko]

thanks guys！I will have a try for all your replies.
here is my test.I use the unifiednoise node. It's new to h12.Quite useful!

[jkunz07]

eko, on 10 July 2012 - 07:35 AM, said:

thanks guys！I will have a try for all your replies.
here is my test.I use the unifiednoise node. It's new to h12.Quite useful!

Looking really good!  I'd still recommend eventually moving the noise functions into the shop context and utilizing shader displacements to avoid some of the aliasing on the displacements in your picture.

[eko]

jkunz07, on 10 July 2012 - 09:03 PM, said:

Looking really good!  I'd still recommend eventually moving the noise functions into the shop context and utilizing shader displacements to avoid some of the aliasing on the displacements in your picture.

Thanks for your advice! cool !