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Relation-Aware Pyramid Network (RapNet) for temporal action proposal

9 August 2019
Jialin Gao
Zhixiang Shi
Jiani Li
Yufeng Yuan
Jiwei Li
Xi Zhou
ArXiv (abs)PDFHTML
Abstract

In this technical report, we describe our solution to temporal action proposal (task 1) in ActivityNet Challenge 2019. First, we fine-tune a ResNet-50-C3D CNN on ActivityNet v1.3 based on Kinetics pretrained model to extract snippet-level video representations and then we design a Relation-Aware Pyramid Network (RapNet) to generate temporal multiscale proposals with confidence score. After that, we employ a two-stage snippet-level boundary adjustment scheme to re-rank the order of generated proposals. Ensemble methods are also been used to improve the performance of our solution, which helps us achieve 2nd place.

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