Forums Technical Discussion How to achieve non-uniform scale extract transform in 17.5?

How to achieve non-uniform scale extract transform in 17.5?

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creepmaster
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Since Houdini 18.0, we got this dark-sorcery-like extract transform with non-uniform scale. But some of the project I'm working on still on 17.5. Is there any way to do this in 17.5?
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animatrix_
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Hi,

You can use the paper "Anisotropic Orthogonal Procrustes Analysis":
https://www.proquest.com/openview/41cf0c1cd83b820357ad3aa9bb72b4d1/1?pq-origsite=gscholar&cbl=54109 [www.proquest.com]

Sample code:
https://chene.github.io/software/2020_AOPA_major [chene.github.io]
Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

youtube.com/@pragmaticvfx | patreon.com/animatrix | pragmaticvfx.gumroad.com
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creepmaster
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animatrix_
Hi,

You can use the paper "Anisotropic Orthogonal Procrustes Analysis":
https://www.proquest.com/openview/41cf0c1cd83b820357ad3aa9bb72b4d1/1?pq-origsite=gscholar&cbl=54109 [www.proquest.com]

Sample code:
https://chene.github.io/software/2020_AOPA_major [chene.github.io]

Thanks for the answer. I guess I will just stick to with 18.5 then lol.

Or... I wonder if there is a way to extract that hda from 18.5?
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animatrix_
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creepmaster
animatrix_
Hi,

You can use the paper "Anisotropic Orthogonal Procrustes Analysis":
https://www.proquest.com/openview/41cf0c1cd83b820357ad3aa9bb72b4d1/1?pq-origsite=gscholar&cbl=54109 [www.proquest.com]

Sample code:
https://chene.github.io/software/2020_AOPA_major [chene.github.io]

Thanks for the answer. I guess I will just stick to with 18.5 then lol.

Or... I wonder if there is a way to extract that hda from 18.5?

I don't think so because it's a complied operator.
Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

youtube.com/@pragmaticvfx | patreon.com/animatrix | pragmaticvfx.gumroad.com
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