Computer Vision Interview Questions, issue 8, Jan 9, 2026
The Zero-Padding Distribution Trap
Senior Computer Vision Engineer interview at OpenAI, and the interviewer asks:
“We use Zero-Padding to maintain feature map dimensions (e.g., 32x32). But from a signal processing perspective, why is injecting zeros at the borders dangerous for your model’s statistical distribution?”
Why injecting zeros at image borders silently breaks translation equivariance and corrupts edge statistics.
The full answer, with the mechanism and the arithmetic, is for paid subscribers on Substack.