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Slicing Convolutional Neural Network for Crowd Video Understanding

CVPR 2016 · Video › Video segmentation and tracking · approach: Stochastic video prediction · 87 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use semantic rather than raw temporal slices for the xy branch (ablation)S-CNN-xy · WWW Crowd testmean AP: 49.56 -> 54.97 (τ=20); 52.05 -> 55.31 (τ=50)Helped
Extend semantic temporal slices from 20 to 100 frames (ablation)S-CNN-xy · WWW Crowd testmean AP: 54.97 -> 55.67Helped
Combine xy, xt, and yt branches instead of using a single branch (ablation)S-CNN · WWW Crowd testmean AP: 59.25 -> 62.55Helped
Prune feature cuboids using the proposed relevance criteria, retaining 256 (ablation)S-CNN · WWW Crowd testmean AP: 62.55 -> 60.13Hurt
Randomly prune feature cuboids to 256 instead of selecting relevant cuboids (ablation)S-CNN · WWW Crowd testmean AP: 60.13 -> 57.03Hurt

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