Hello everyone!

I've been learning Houdini for the past weeks and I wanted to ask something about the COP network.

Basically I would like to combine two images and select which channels go through to the result allowing me to reorder the channels of the inputs. I used Touch Designer quite a lot and they have a really handy operator that is called 'Reorder'. This OP allows you to do exactly that operation and I wanted to know if there is a way to do the same in the COP Network in Houdini.

I attached an example of how this 'Reorder' OP works in TD to show my desired result:



It inputs two images, input1_RBG and input2_RGB. Then I select that I want to keep the RGB channels from input1 and use the R channel from input2 as the new alpha. This creates an output that is RGBA. I hope the image can illustrate what I am referring to.

Thanks a lot!
Sebi

You're looking for the "Channel Copy" composite node. It works similarly to your example.

jsmack
You're looking for the "Channel Copy" composite node. It works similarly to your example.

Thanks! "Channel Copy" was what I was looking for.

For anyone wondering how to use it, I attach an image with the solution in Houdini.