Archived post by lwwwwwws

kuwahara is a cool trick but it does date from 1976, bilateral filters are a more controllable and better behaved way to filter while avoiding edges… here’s one i use a lot in comp and just translated from glsl to opencl

it works ok on bacon but i do feel like it could be improved 🤔 it’s the kind of thing that works better in log than linear and the threshold control might be better if it was a hard cutoff so colours past a certain distance are ignored, instead of this drastic pow() curve thing i’m doing

Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20261102/08/26/Screenshot_2026-02-08_at_16.18.15.png
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20261102/08/26/Screenshot_2026-02-08_at_16.17.55.png
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20261102/08/26/Ls_Dollface_v01.cl

Archived post by vanity_ibex

Ported Mild Slope Equation Solver to COPs (Fancy Ripple Solver)

wrote a little bit about it here: vanity-ibex.xyz/blog/mildslopeequation/

Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20264801/13/26/Mild-Slope_Equation_09.rop_image1.0001_output_compressed_crf20.mp4
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20264801/13/26/Mild-Slope_Equation.hiplc

Archived post by mysterypancake

dumb cops question – does anyone know how to get the size of the volume in hscript?

i thought volumeres but no luck 🙁

finished prefix sum, now around 15x faster 👀

also the iterations can be animated now

Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20263801/12/26/image.png
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20263801/12/26/prefixsum.mp4
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20263801/12/26/cops_fast_prefixsum.hiplc
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20263801/12/26/prefixsum_animate.webp

Archived post by kolupsy

a while ago I thought it would be fun to try and optimize the “equalize” node. It’s not perfect since I don’t think cops allows image inputs of different sizes but it seems to run faster than the builtin “equalize” node by using a more parallel-friendly algorithm. Thought I’d drop that here in case anybody is interested

Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20260001/10/26/cops_fast_normalize.hipnc
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20260001/10/26/image.png