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Yongcheng Liu

6 accepted papers

2022

Transtl: Spatial-Temporal Localization Transformer for Multi-Label Video Classification

ICASSP 2022accepted

Multi-label video classification (MLVC) is a long-standing and challenging research problem in video signal analysis. Generally, there exist many complex action labels in real-world videos and these actions are with inherent dependencies at both spatial and temporal domains. Motivated by this observ…

Cited by 0SourceScholar
2022

W-ART: Action Relation Transformer for Weakly-Supervised Temporal Action Localization

ICASSP 2022accepted

Weakly-supervised temporal action localization (WTAL) is a long-standing and challenging research problem in video signal analysis. It is to localize the action segments in the video given only video-level labels. The key to this task is understanding how the diverse actions interact. In this paper,…

Cited by 0SourceScholar
2021

Differentiable Convolution Search for Point Cloud Processing

ICCV 2021poster

Exploiting convolutional neural networks for point cloud processing is quite challenging, due to the inherent irregular distribution and discrete shape representation of point clouds. To address these problems, many handcrafted convolution variants have sprung up in recent years. Though with elabora…

Cited by 10PDFScholar
2020

Decoupled Representation Learning for Skeleton-Based Gesture Recognition

CVPR 2020poster

Skeleton-based gesture recognition is very challenging, as the high-level information in gesture is expressed by a sequence of complexly composite motions. Previous works often learn all the motions with a single model. In this paper, we propose to decouple the gesture into hand posture variations a…

Cited by 94PDFScholar
2019

DensePoint: Learning Densely Contextual Representation for Efficient Point Cloud Processing

ICCV 2019poster

Point cloud processing is very challenging, as the diverse shapes formed by irregular points are often indistinguishable. A thorough grasp of the elusive shape requires sufficiently contextual semantic information, yet few works devote to this. Here we propose DensePoint, a general architecture to l…

Cited by 368PDFcodeScholar
2019

Relation-Shape Convolutional Neural Network for Point Cloud Analysis

CVPR 2019oral

Point cloud analysis is very challenging, as the shape implied in irregular points is difficult to capture. In this paper, we propose RS-CNN, namely, Relation-Shape Convolutional Neural Network, which extends regular grid CNN to irregular configuration for point cloud analysis. The key to RS-CNN is…

Cited by 1206PDFcodeScholar