I’m trying to use ITK in conjunction with Unity. Currently, when my program is called from Unity, it reads a .mha + .raw 3D image file, applies two filters, and outputs a 2D PNG, which is written to another folder where Unity can make use of it. What I would like to do is circumvent having to write a PNG file that is immediately loaded back in. I am able to call my ITK program as a function in Unity, so I was hoping there was a way to return the PNG as an array instead of writing a file. This link from the mailing list is the closest I got to answering my question on my own, but the link to “Getting Started V: Integrating ITK in your Application” is dead.