NDC coordinates [github.com] are great for projecting plates (photos and videos) from the camera that took them, or Ian Hubert projection tricks [www.youtube.com].

This HDA lets you project plates in 3 ways:

1. Constant Z coordinate


2. Varying Z coordinate using a depth map


3. Raying onto the object


Download here:
https://github.com/MysteryPancake/Houdini-Fun?tab=readme-ov-file#hda-plate-project [github.com]

Attachments:
depth_project.png (494.0 KB)
depth_cam.png (623.6 KB)
project_constant.png (377.7 KB)