Saral Shiksha Yojna
Courses/Computer Vision

Computer Vision

CSE471
Prof. Makarand Tapaswi + Prof. Charu Sharma•Spring 2025-26•4 credits
Revision Notes/Unit 3 — Pose Estimation

Unit 3 — Pose Estimation

Single-person and multi-person human pose. Heatmap regression, CPM, OpenPose with Part Affinity Fields, top-down vs bottom-up, and SMPL for 3D body recovery.

Pose Estimation — Heatmaps, CPM, OpenPose, SMPL

14 min

Predicting K joint locations as a 17×2 vector throws away spatial structure. Almost every modern pose method predicts a heatmap per joint instead and reads the joint location off the argmax — same idea as dense prediction in segmentation, with parabola-fit interpolation for sub-pixel accuracy.