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DeltaCNN: End-to-End CNN Inference of Sparse Frame Differences in Videos

CVPR 2022 · Video › Video segmentation and tracking · approach: Video restoration with temporal priors · 33 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
propagate sparse frame updates end-to-end with GPU tile skippingHRNet · Human3.6M Subject S11, Jetson Nanospeedup: 1.0 -> 6.7Helped
propagate sparse frame updates end-to-end with update truncationEfficientDet-d1 · MOT16, Jetson Nanospeedup: 1.0 -> 5.6Helped
use sparse inference rather than dense cuDNN inferenceEfficientDet-d1 · MOT16AP@0.5: 63.9% -> 64.0%No clear effect
use sparse inference rather than dense cuDNN inferenceEfficientDet-d1 · WildTrackAP@0.5: 72.1% -> 71.6%Hurt
use a larger d1 model instead of d0EfficientDet on MOT16 · MOT16AP@0.5: 55.6% -> 64.0%Helped
use hybrid tile processing rather than per-tile sparse processing (ablation)3x3 convolution, 6x6 tile · GTX 1050, s=90%runtime: 16.5 -> 15.8Helped
use hybrid tile processing rather than per-tile sparse processing (ablation)3x3 convolution, 6x6 tile · GTX 1050, s=99%runtime: 7.7 -> 5.0Helped
use per-pixel sparse processing instead of hybrid tile processing (ablation)3x3 convolution, 6x6 tile · GTX 1050, s=90%runtime: 15.8 -> 44.3Hurt
use per-pixel sparse processing instead of hybrid tile processing (ablation)3x3 convolution, 6x6 tile · GTX 1050, s=99%runtime: 5.0 -> 20.4Hurt
train truncation thresholds jointly rather than auto-tuning them one-by-one (ablation)DeltaCNN · threshold tuning experimentsthreshold qualityNo clear effect
train truncation thresholds jointly rather than auto-tuning them one-by-one (ablation)DeltaCNN · threshold tuning experimentstraining timeHurt
use threshold 0.5 with 7-pixel input-mask dilation instead of threshold 0.15 without dilation (ablation)DeltaCNN on MOT16 · MOT16speed: 8%Helped

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