Computer Vision Interview Questions, issue 22, Jan 23, 2026
The Interactive Segmentation Trap
final-round Computer Vision Engineer interview at OpenAI, and the interviewer asks:
“Your user clicks here. What mask does your model output?”
Why guessing user intent from one click leads to blurry masks and unstable convergence.
The full answer, with the mechanism and the arithmetic, is for paid subscribers on Substack.