arXiv AI

GT-Space: Enhancing Heterogeneous Collaborative Perception with Ground Truth Feature Space

arXiv Machine Learning
Jul 28

SimBEV2X: A Large-Scale Dataset and Data Generation Tool for Multi-Task Vehicle-to-Everything Cooperative Perception

arXiv:2607. 23910v1 Announce Type: cross Abstract: Cooperative perception through vehicle-to-everything (V2X) communication can overcome the inherent physical limitations of individual autonomous vehicles, such as occlusions and limited sensor range.

By Goodarz Mehr, Sepideh Gohari, Montasir Abbas, Azim Eskandarian
arXiv Computer Vision
Sep 11

HeteroPROMPT: A Real-time and Privacy-Preserving Heterogeneous Collaborative Perception Framework

HeteroPROMPT is a real‑time, privacy‑preserving framework for heterogeneous collaborative perception in autonomous systems. It aligns features from diverse sensors and models into a unified ego‑centric space using modular prompts and lightweight tuning, while keeping encoders and fusion stacks frozen. The system employs a metadata‑free autoencoder for modality classification and routing, achieving higher average precision on OPV2V‑H and V2XSet datasets with far fewer trainable parameters.

By Armin Maleki, Hayder Radha
arXiv Machine Learning
Sep 24

PEARL: A Lightweight Prompt-based Feature Interpreter Framework for Real-Time, Anonymous, and Heterogeneous Collaborative Perception

PEARL is a lightweight, prompt‑embedding framework designed for real‑time, anonymous, and heterogeneous collaborative perception. It uses two parallel, low‑rank visual prompt interpreters—sparse‑detection (LWSD) and dense, domain‑invariant (LWDDI)—to align features and select the appropriate interpreter for newly joining agents without needing their configurations. Experiments on simulated and real datasets show that PEARL improves average precision by 8.2% over random selection, runs in 1.67 ms, and reduces communication cost by up to 34.7× while outperforming state‑of‑the‑art offline methods by 5.6% AP.

By Armin Maleki, Hayder Radha
arXiv Computer Vision
Oct 2

FedCKA: Representation-Guided Layer Personalization for Federated 3D Perception Across Driving Domains

FedCKA introduces a Centered Kernel Alignment (CKA)-based method for federated 3D perception that dynamically balances personalization and globalization. By computing layer-wise feature similarities between local client models and a global consensus model, FedCKA generates client‑specific aggregation masks to selectively share representation‑consistent layers. Experiments on a unified multi‑domain nuScenes benchmark demonstrate that FedCKA surpasses established federated baselines, improving average NDS by 7 percentage points.

By Jolle Verhoog, Ali Burak \"Unal, Holger Caesar
arXiv Computer Vision
Sep 3

BOLT: Online Lightweight Adaptation for Preparation-Free Heterogeneous Cooperative Perception

BOLT is a lightweight plug‑and‑play module that enables preparation‑free heterogeneous cooperative perception by adapting neighboring features online through ego‑as‑teacher distillation. It requires only ego predictions, no ground‑truth labels, and uses high‑confidence ego features to align cross‑agent feature domains while allowing neighbors to contribute in low‑confidence regions. With just 0.9 M trainable parameters, BOLT boosts AP@50 by up to 32.3 points over unadapted fusion and consistently outperforms ego‑only results on DAIR‑V2X and OPV2V.

By Kang Yang, Tianci Bu, Peng Wang, Deying Li, Yongcai Wang
arXiv AI
Sep 4

CauseCollab: Causal Unified and Modality-Agnostic Network for Heterogeneous Collaborative Perception

CauseCollab is a causal unified and modality‑agnostic network designed to improve collaborative perception across heterogeneous sensor modalities. It disentangles semantic factors from modality‑specific confounders using causal metric learning and employs a context‑guided Unified Converter to maintain cross‑modal semantic consistency. The approach requires only minimal adapter training when adding new modalities and achieves state‑of‑the‑art results on the OPV2V and DAIR‑V2X datasets, especially in scenarios with large modality gaps.

By Weize Li, Yang Li, Quan Yuan, Xiaoyuan Fu, Guiyang Luo, Jinglin Li
arXiv Computer Vision
Oct 9

CoCam4D: Geometry-Aware Cooperative 4D Perception for Camera-Only Autonomous Driving

CoCam4D is a Bayesian framework for camera-only autonomous driving that models geometric uncertainty in collaborative perception. It employs a VGGT-based network to produce 3D Gaussian scene representations with uncertainty estimates, allowing multiple vehicles to fuse observations without LiDAR. The system introduces Dynamic Object Primitives, a 35‑byte format for efficient C‑V2X communication, and shows significant performance gains over recent vision-only methods on OPV2V+ and DAIR‑V2X‑C benchmarks.

By Soham Pahari, Sudip Das, Arindam Das, Ujjwal Bhattacharya