← Search

Leheng Li

4 accepted papers

2025

Controllable Traffic Simulation through LLM-Guided Hierarchical Reasoning and Refinement

IROS 2025

Evaluating autonomous driving systems in complex and diverse traffic scenarios through controllable simulation is essential to ensure their safety and reliability. However, existing traffic simulation methods face challenges in their controllability. To address this, we propose a novel diffusion-bas

Cited by 1SourceScholar
2025

Lotus: Diffusion-based Visual Foundation Model for High-quality Dense Prediction

ICLR 2025poster

Leveraging the visual priors of pre-trained text-to-image diffusion models offers a promising solution to enhance zero-shot generalization in dense prediction tasks. However, existing methods often uncritically use the original diffusion formulation, which may not be optimal due to the fundamental d…

Cited by 33SourcePDFScholar
2024

Adv3D: Generating 3D Adversarial Examples for 3D Object Detection in Driving Scenarios with NeRF

IROS 2024poster

Deep neural networks (DNNs) have been proven extremely susceptible to adversarial examples, which raises special safety-critical concerns for DNN-based autonomous driving stacks (i.e., 3D object detection). Although there are extensive works on image-level attacks, most are restricted to 2D pixel sp…

Cited by 2SourceScholar
2023

Lift3D: Synthesize 3D Training Data by Lifting 2D GAN to 3D Generative Radiance Field

CVPR 2023poster

This work explores the use of 3D generative models to synthesize training data for 3D vision tasks. The key requirements of the generative models are that the generated data should be photorealistic to match the real-world scenarios, and the corresponding 3D attributes should be aligned with given s…