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A Voxel Graph CNN for Object Classification With Event Cameras

CVPR 2022 · Architectures and efficiency › CNN design · approach: Efficient CNN scaling and dynamic inference · 62 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use MFRL to process adjacent and distant neighbors separately instead of shared-parameter SFRL (ablation)EV-VGCNN · N-MNIST, N-Caltech101, N-CARS, CIFAR10-DVS, ASL-DVSaccuracy: 0.992 -> 0.994; 0.737 -> 0.748; 0.944 -> 0.953; 0.652 -> 0.670; 0.962 -> 0.983Helped
Use event-voxel rather than point-wise vertices (ablation)EV-VGCNN · N-Caltech101accuracy: 0.565 -> 0.748Helped
Increase point-wise graph vertices from 2048 to 4096 (ablation)EV-VGCNN with original-event vertices · N-Caltech101accuracy: 0.565 -> 0.601Helped
Increase point-wise graph vertices from 4096 to 8192 (ablation)EV-VGCNN with original-event vertices · N-Caltech101accuracy: 0.601 -> 0.619Helped
Increase distant neighbors from 10 to 20 while keeping adjacent neighbors at 10 (ablation)EV-VGCNN · N-Caltech101accuracy: 0.742 -> 0.751Helped
Increase adjacent neighbors from 10 to 20 while keeping distant neighbors at 15 (ablation)EV-VGCNN · N-Caltech101accuracy: 0.748 -> 0.740Hurt
Use 10 adjacent and 15 distant neighbors rather than 5 adjacent and 15 distant neighbors (ablation)EV-VGCNN · N-Caltech101accuracy: 0.737 -> 0.748Helped
Use 10 adjacent and 15 distant neighbors rather than 5 adjacent and 20 distant neighbors (ablation)EV-VGCNN · N-Caltech101accuracy: 0.743 -> 0.748Helped
Use 10 adjacent and 15 distant neighbors rather than 20 adjacent and 5 distant neighbors (ablation)EV-VGCNN · N-Caltech101accuracy: 0.730 -> 0.748Helped
Use event-voxel graph construction rather than point-wise graph construction (ablation)EV-VGCNN · N-Caltech101accuracy: 0.619 -> 0.748Helped
Use event-voxel graph construction rather than point-wise graph construction (ablation)EV-VGCNN · N-Caltech101GFLOPs: 0.63 -> 0.70Hurt

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