Working on a personal safety app for women that runs pose estimation on-device, and I needed to blur bystanders' faces before any frame leaves the phone. Instead of adding a face detector, I reused the pose output.

The approach followed: - YOLO11n-pose gives 17 keypoints. Keypoints 0-4 (nose, eyes, ears) give the head centre. - Box size comes from ear-to-ear distance, eye distance x 3.2, or shoulder width x 0.6, whichever is most reliable that frame. - If the person is facing away (no face keypoints), fall ba…

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1. 2026-10-16 10:05 · r/computervision
   Working on a personal safety app for women that runs pose estimation on-device, and I needed to blur bystanders' faces before any frame leaves the phone. Instead of adding a face detector, I reused the pose output.