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Frederick W. B. Li

9 accepted papers

2026

Cross-temporal 3D Gaussian Splatting for Sparse-view Guided Scene Update

AAAI 2026technical

Maintaining consistent 3D scene representations over time is a significant challenge in computer vision. Updating 3D scenes from sparse-view observations is crucial for various real-world applications, including urban planning, disaster assessment, and historical site preservation, where dense scan

Cited by 0SourcePDFScholar
2026

R²D-LPCC: Relevance-Ranking Guided Region-Adaptive Dynamic LiDAR Point Cloud Compression

AAAI 2026technical

Dynamic LiDAR point cloud compression (LPCC) is crucial for the efficient transmission and storage of large-scale three-dimensional data in applications such as autonomous driving. However, many existing methods, which primarily focus on compressing geometric or motion information, face a fundamenta

Cited by 0SourcePDFScholar
2025

Multi-modal Dynamic Point Cloud Geometric Compression Based on Bidirectional Recurrent Scene Flow

ICASSP 2025accepted

Deep learning methods have recently shown significant promise in compressing the geometric features of point clouds. However, challenges arise when consecutive point clouds contain holes, resulting in incomplete information that complicates motion estimation. To our knowledge, most existing dynamic…

Cited by 0SourceScholar
2025

Uncertainty-aware Probabilistic 3D Human Motion Forecasting via Invertible Networks

ICRA 2025

3D human motion forecasting aims to enable autonomous applications. Estimating uncertainty for each prediction (i.e., confidence based on probability density or quantile) is essential for safety-critical contexts like human-robot collaboration to minimize risks. However, existing diverse motion fore

Cited by 3SourceScholar
2024

MAGR: Manifold-Aligned Graph Regularization for Continual Action Quality Assessment

ECCV 2024oral

"Action Quality Assessment (AQA) evaluates diverse skills but models struggle with non-stationary data. We propose Continual AQA (CAQA) to refine models using sparse new data. Feature replay preserves memory without storing raw inputs. However, the misalignment between static old features and the dy…

2023

Fg-T2M: Fine-Grained Text-Driven Human Motion Generation via Diffusion Model

ICCV 2023poster

Text-driven human motion generation in computer vision is both significant and challenging. However, current methods are limited to producing either deterministic or imprecise motion sequences, failing to effectively control the temporal and spatial relationships required to conform to a given text…

Cited by 53PDFScholar
2023

HSE: Hybrid Species Embedding for Deep Metric Learning

ICCV 2023poster

Deep metric learning is crucial for finding an embedding function that can generalize to training and testing data, including unknown test classes. However, limited training samples restrict the model's generalization to downstream tasks. While adding new training samples is a promising solution, de…

Cited by 6PDFcodeScholar
2022

Geometric Features Informed Multi-Person Human-Object Interaction Recognition in Videos

ECCV 2022poster

"Human-Object Interaction (HOI) recognition in videos is important for analyzing human activity. Most existing work focusing on visual features usually suffer from occlusion in the real-world scenarios. Such a problem will be further complicated when multiple people and objects are involved in HOIs.…