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Qihang Fang

6 accepted papers

2025

HuMoCon: Concept Discovery for Human Motion Understanding

CVPR 2025poster

We present HuMoCon, a novel motion-video understanding framework designed for advanced human behavior analysis. The core of our method is a human motion concept discovery framework that efficiently trains multi-modal encoders to extract semantically meaningful and generalizable features. HuMoCon add…

Cited by 0SourcePDFScholar
2024

CigTime: Corrective Instruction Generation Through Inverse Motion Editing

NeurIPS 2024poster

Recent advancements in models linking natural language with human motions have shown significant promise in motion generation and editing based on instructional text. Motivated by applications in sports coaching and motor skill learning, we investigate the inverse problem: generating corrective inst…

Cited by 0SourcePDFScholar
2024

DeVAn: Dense Video Annotation for Video-Language Models

ACL 2024long

We present a novel human annotated dataset for evaluating the ability for visual-language models to generate both short and long descriptions for real-world video clips, termed DeVAn (Dense Video Annotation). The dataset contains 8.5K YouTube video clips of 20-60 seconds in duration and covers a wid…

2024

Evaluate Geometry of Radiance Fields with Low-Frequency Color Prior

AAAI 2024technical

A radiance field is an effective representation of 3D scenes, which has been widely adopted in novel-view synthesis and 3D reconstruction. It is still an open and challenging problem to evaluate the geometry, i.e., the density field, as the ground-truth is almost impossible to obtain. One alternativ…

2023

Reducing Shape-Radiance Ambiguity in Radiance Fields with a Closed-Form Color Estimation Method

NeurIPS 2023poster

A neural radiance field (NeRF) enables the synthesis of cutting-edge realistic novel view images of a 3D scene. It includes density and color fields to model the shape and radiance of a scene, respectively. Supervised by the photometric loss in an end-to-end training manner, NeRF inherently suffers…

2022

Towards Accurate Active Camera Localization

ECCV 2022poster

"In this work, we tackle the problem of active camera localization, which controls the camera movements actively to achieve an accurate camera pose. The past solutions are mostly based on Markov Localization, which reduces the position-wise camera uncertainty for localization. These approaches local…