Genesis: Multimodal Driving Scene Generation with Spatio-Temporal and Cross-Modal Consistency
This addresses the need for realistic multimodal data generation for autonomous driving applications, representing a novel method rather than an incremental improvement.
The authors tackled the problem of generating consistent multi-view driving videos and LiDAR sequences by proposing Genesis, a unified framework that achieved state-of-the-art performance on the nuScenes benchmark with metrics like FVD 16.95, FID 4.24, and Chamfer 0.611.
We present Genesis, a unified framework for joint generation of multi-view driving videos and LiDAR sequences with spatio-temporal and cross-modal consistency. Genesis employs a two-stage architecture that integrates a DiT-based video diffusion model with 3D-VAE encoding, and a BEV-aware LiDAR generator with NeRF-based rendering and adaptive sampling. Both modalities are directly coupled through a shared latent space, enabling coherent evolution across visual and geometric domains. To guide the generation with structured semantics, we introduce DataCrafter, a captioning module built on vision-language models that provides scene-level and instance-level supervision. Extensive experiments on the nuScenes benchmark demonstrate that Genesis achieves state-of-the-art performance across video and LiDAR metrics (FVD 16.95, FID 4.24, Chamfer 0.611), and benefits downstream tasks including segmentation and 3D detection, validating the semantic fidelity and practical utility of the generated data.