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Longjun Liu

5 accepted papers

2025

D2S: Towards Efficient Sparse 3D Object Detection via Dense to Sparse Knowledge Distillation

ICASSP 2025accepted

LiDAR-based 3D object detection is widely used in high-level autonomous driving schemes. However, the cumbersome modules in most 3D detectors lead to substantial computational overhead. Despite knowledge distillation (KD) is an effective approach for compressing models, previous methods cannot be ex…

Cited by 0SourceScholar
2025

Dualdiff: Dual-Branch Diffusion Model for Autonomous Driving with Semantic Fusion

ICRA 2025

Accurate and high-fidelity driving scene reconstruction relies on fully leveraging scene information as conditioning. However, existing approaches, which primarily use 3D bounding boxes and binary maps for foreground and background control, fall short in capturing the complexity of the scene and int

Cited by 5SourceScholar
2025

Towards Accurate Semi-Supervised BEV 3D Object Detection with Depth-Aware Refinement and Denoising-Aided Alignment

ICRA 2025

Recently, camera-based Bird's-Eye View (BEV) representation has gained significant traction in 3D object detection. However, training high-performance BEV 3D detectors typically requires a large number of annotated samples, which can be costly. Traditional semi-supervised methods for BEV 3D object d

Cited by 0SourceScholar
2024

CaKDP: Category-aware Knowledge Distillation and Pruning Framework for Lightweight 3D Object Detection

CVPR 2024poster

Knowledge distillation (KD) possesses immense potential to accelerate the deep neural networks (DNNs) for LiDAR-based 3D detection. However in most of prevailing approaches the suboptimal teacher models and insufficient student architecture investigations limit the performance gains. To address thes…

2024

IS-DARTS: Stabilizing DARTS through Precise Measurement on Candidate Importance

AAAI 2024technical

Among existing Neural Architecture Search methods, DARTS is known for its efficiency and simplicity. This approach applies continuous relaxation of network representation to construct a weight-sharing supernet and enables the identification of excellent subnets in just a few GPU days. However, perfo…