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Tongjia Chen

3 accepted papers

2025

Motion-Grounded Video Reasoning: Understanding and Perceiving Motion at Pixel Level

CVPR 2025poster

In this paper, we introduce Motion-Grounded Video Reasoning, a new motionunderstanding task that requires generating visual answers (video segmentationmasks) according to the input question, and hence needs implicit spatiotemporalreasoning and grounding. This task extends existing spatiotemporal gro…

Cited by 3SourcePDFScholar
2024

OST: Refining Text Knowledge with Optimal Spatio-Temporal Descriptor for General Video Recognition

CVPR 2024poster

Due to the resource-intensive nature of training vision-language models on expansive video data a majority of studies have centered on adapting pre-trained image-language models to the video domain. Dominant pipelines propose to tackle the visual discrepancies with additional temporal learners while…

2023

AShapeFormer: Semantics-Guided Object-Level Active Shape Encoding for 3D Object Detection via Transformers

CVPR 2023poster

3D object detection techniques commonly follow a pipeline that aggregates predicted object central point features to compute candidate points. However, these candidate points contain only positional information, largely ignoring the object-level shape information. This eventually leads to sub-optima…