arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1807.08069cs.CV

S3D: Single Shot multi-Span Detector via Fully 3D Convolutional Networks

UC Santa Barbara(加州大学圣巴巴拉分校);University of Maryland(马里兰大学)

Da Zhang, Xiyang Dai, Xin Wang, Yuan-Fang Wang

英文摘要:

In this paper, we present a novel Single Shot multi-Span Detector for temporal activity detection in long, untrimmed videos using a simple end-to-end fully three-dimensional convolutional (Conv3D) network. Our architecture, named S3D, encodes the entire video stream and discretizes the output space of temporal activity spans into a set of default spans over different temporal locations and scales. At prediction time, S3D predicts scores for the presence of activity categories in each default span and produces temporal adjustments relative to the span location to predict the precise activity duration. Unlike many state-of-the-art systems that require a separate proposal and classification stage, our S3D is intrinsically simple and dedicatedly designed for single-shot, end-to-end temporal activity detection. When evaluating on THUMOS'14 detection benchmark, S3D achieves state-of-the-art performance and is very efficient and can operate at 1271 FPS.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑