I have an art installation I want to build that uses software written in Unity, implementing opencv and using a webcam, and displaying on some sort of inexpensive monitor. I can compile to Android/iOS/Linux. I was originally planning on using a raspberry pi, but Unity only compiles for the x86 architecture and I'd prefer not to use the android hack workarounds.
What's a good cheap microcomputer / microcontroller to use for this? Needs very little storage but ability to process realtime video with opencv. I don't need much storage. I saw the Udoo x86, but ~$200 seems a bit expensive - was hoping to keep it around $50. Seems like intel maybe has some boards, like the Quark, but I wasn't sure how it would perform with the video. Or maybe I could just run it off a cheap phone if I could figure out how to output to the monitor. Any hardware recommendations are appreciated.