Research on automotive vision algorithms: focusing on urban scenarios, BEV evolves into three technology routes.
1. What is BEV?
BEV (Bird's Eye View), also known as God's Eye View, is an end-to-end technology where the neural network converts image information from image space into BEV space.
Compared with conventional image space perception, BEV perception can input data collected by multiple sensors into a unified space for processing, acting as an effective way to avoid error superposition, and also makes temporal fusion easier to form a 4D space.

BEV is not a new technology. In 2016, Baidu began to realize point cloud perception at the BEV; in 2021, Tesla’s introduction of BEV draw widespread attention in the industry. There are BEV perception algorithms corresponding to different sensor input layers, basic tasks, and scenarios. Examples include BEVFormer algorithm only based on vision, and BEVFusion algorithm based on multi-modal fusion strategy.

2. Three technology routes of BEV perception algorithm
In terms of implementation of BEV technology, the technology architecture of each player is roughly the same, but technical solutions they adopt are different. So far, there have been three major technology routes:
Vision-only BEV perception route in which the typical company is Tesla;
BEV fused perception route in which the typical company is Haomo.ai;
Vehicle-road integrated BEV perception route in which the typical company is Baidu.
Vision-only BEV perception technology route: Tesla is a representative company of this technology route. In 2021, it was the first one to use the pre-fusion BEV algorithm for directly transmitting the image perceived by cameras into the AI algorithm to generate a 3D space at a bird's-eye view, and output perception results in the space. This space incorporates dynamic information such as vehicles and pedestrians, and static information like lane lines, traffic signs, traffic lights and buildings, as well as the coordinate position, direction angle, distance, speed, and acceleration of each element.

Tesla uses the backbone network to extracts features of each camera. It adopts the Transformer technology to convert multi-camera data from image space into BEV space. Transformer, a deep learning model based on the Attention mechanism, can deal with massive data-level learning tasks and accurately perceive and predict the depth of objects.

BEV fused perception technology route: Haomo.ai is an autonomous driving company under Great Wall Motor. In 2022, it announced an urban NOH solution that underlines perception and neglects maps. The core technology comes from MANA (Snow Lake).
In the MANA perception architecture, Haomo.ai adopts BEV fused perception (visual Camera + LiDAR) technology. Using the self-developed Transformer algorithm, MANA not only completes the transformation of vision-only information into BEV, but also finishes the fusion of Camera and LiDAR feature data, that is, the fusion of cross-modal raw data.

Since its launch in late 2021, MANA has kept evolving. With Transformer-based perception algorithms, it has solved multiple road perception problems, such as lane line detection, obstacle detection, drivable area segmentation, traffic light detection & recognition, and traffic sign recognition.
In January 2023, MANA got further upgraded by introducing five major models to enable the transgenerational upgrade of the vehicle perception architecture and complete such tasks as common obstacle recognition, local road network and behavior prediction. The five models are: visual self-supervision model (automatic annotation of 4D Clip), 3D reconstruction model (low-cost solution to data distribution problems), multi-modal mutual supervision model (common obstacle recognition), dynamic environment model (using perception-focused technology for lower dependence on HD maps), and human-driving self-supervised cognition model (driving policy is more humane, safe and smooth).

Vehicle-road integrated BEV perception technology route: in January 2023, Baidu introduced UniBEV, a vehicle-road integrated solution which is the industry's first end-to-end vehicle-road integrated perception solution.
Features:
Fusion of all vehicle and roadside data, covering online mapping with multiple vehicle cameras and sensors, dynamic obstacle perception, and multi-intersection multi-sensor fusion from the roadside perspective;
Self-developed internal and external parameters decoupling algorithm, enabling UniBEV to project the sensors into a unified BEV space regardless of how they are positioned on the vehicle and at the roadside
In the unified BEV space, it is easier for UniBEV to realize multi-modal, multi-view, and multi-temporal fusion of spatial-temporal features;
The big data + big model + miniaturization technology closed-loop remains superior in dynamic and static perception tasks at the vehicle side and roadside.

Baidu’s UniBEV solution will be applied to ANP3.0, its advanced intelligent driving product planned to be mass-produced and delivered in 2023. Currently, Baidu has started ANP3.0 generalization tests in Beijing, Shanghai, Guangzhou and Shenzhen.
Baidu ANP3.0 adopts the "vision-only + LiDAR" dual redundancy solution. In the R&D and testing phase, with the "BEV Surround View 3D Perception" technology, ANP3.0 has become an intelligent driving solution that enables multiple urban scenarios solely relying on vision. In the mass production stage, ANP3.0 will introduce LiDAR to realize multi-sensor fused perception to deal with more complex urban scenarios.
3. BEV perception algorithm favors application of urban NOA.
As vision algorithms evolve, BEV perception algorithms become the core technology for OEMs and autonomous driving companies such as Tesla, Xpeng, Great Wall Motor, ARCFOX, QCraft and Pony.ai, to develop urban scenarios.
Xpeng Motors: the new-generation perception architecture XNet can fuse the data collected by cameras before multi-frame timing, and output 4D dynamic information (e.g., vehicle speed and motion prediction) and 3D static information (e.g., lane line position) at the BEV.
Pony.ai: In January 2023, it announced the intelligent driving solution - Pony Shitu. The self-developed BEV perception algorithm, the key feature of the solution, can recognize various types of obstacles, lane lines and passable areas, minimize computing power requirements, and enable highway and urban NOA only using navigation maps.

Cockpit-Driving Integration Central Domain Controller SoC and AI Supercomputing Architecture Research Report, 2026
Cockpit-Driving integration and AI supercomputing research: The One Chip solution is rapidly installed in vehicles, and AI supercomputing architectures are moving towards full-domain integration.
AI ...
Intelligent Driving End-to-End Large Model Research Report, 2026
Research on Intelligent Driving Large Models: A Critical Period for Technological Competition and Paradigm Integration
As autonomous driving technology rapidly iterates from L2 to L3?L4, intelligent...
Automotive Digital Key Industry Trend Report, 2026
Digital Key Research: Automotive BLE, UWB and SLE Hardware Layout
The Automotive Digital Key Industry Trend Report, 2026, released by ResearchInChina, analyzes and predicts the digital key market, co...
Monthly Report on Automotive New Technology (May 2026)
UHD gaze technology, full-color LiDAR, UWB, etc. promote the upgrade of intelligent driving perception capabilities
This report is published once a month and is available for annual subscription.The...
In-Cabin Monitoring Systems (DMS, OMS, etc.) Research Report, 2026
In-Cabin Monitoring System Research: DMS to Become Mandatory in 2027, Expected to be Installed in Over 14 Million Vehicles
ResearchInChina released the In-Cabin Monitoring Systems (DMS, OMS, etc.) Re...
Automotive Service-Oriented Architecture (SOA) and Cross-Domain Middleware Industry Report, 2026
Research on automotive SOA and cross-domain middleware: The era of AI atomic services and AI cross-domain fusion agents is coming.
Automotive SOA evolves towards AI + full SOA servitization Driv...
Automotive Display, Center Console and Cluster Industry Report, 2026
Automotive Display Research: Multi-Screen Application Slows Down, While OLED and MiniLED Are Introduced in Vehicles Quickly
In 2026, automotive displays will no longer excessively pursue the number a...
Global and China Intelligent Vehicle Standard System Construction and Certification Research Report, 2026
Intelligent Driving Standards and Certification: With the Maturing Standardization System, China Will Participate in Formulation of Global Standards
China's automotive industry is transforming from ...
Automotive Intelligent Diagnosis Industry Report, 2026
Automotive Intelligent Diagnosis Research: Powered by AI, Remote Diagnosis Is Being Upgraded towards Intelligence.
ResearchInChina released the Automotive Intelligent Diagnosis Industry Report, 2026....
Automotive Cloud Service Platform Research Report, 2026
Research on automotive cloud service platform: with architecture upgrade and computing power improvement, cloud services enter a new stage
In 2026, the Internet of Vehicles industry generates petaby...
Integrated Battery and Innovative Battery Technology Research Report, 2026
Power Battery Research: Sales of High-Capacity Vehicles Keep Rising, and Solid-State Batteries Begin to Be Installed in Vehicles
I. Sales of High-Capacity Vehicles Sustain Growth, and Those with A C...
Chinese Independent OEMs’ ADAS and Autonomous Driving Report, 2026
Research on OEMs' Intelligent Driving: Era of Physical AI, Standard Configuration of D2D, and Initial Exploration of L3 Commercial Pilot Projects
From 2023 to 2025, the intelligent driving installati...
Intelligent Vehicle New Technology Application Analysis Report, 2025-2026
New Technology Research: Innovative Products such as Bionic Cameras, Vision-LiDAR Fusion Sensors, Auditory Sensors Further Enhance Vehicle Perception Capabilities
ForewordResearchInChina released th...
Automotive Optical Fiber Communication (Optical Fiber Ethernet, PON) and Supply Chain Research Report, 2026
Research on Automotive Optical Fiber Communication: Introduction of Optical Fiber in Vehicles Accelerates, with Priority Deployment in High-Speed Communication Link (10+Gbps) Scenarios
Automotive opt...
Automotive Intelligent Cockpit SoC Research Report, 2026
Automotive Cockpit SoC Research: Passenger Cars in the Price Range of RMB100,000–200,000 Account for Nearly 50% of Total Sales, and New-Generation Cockpit SoC Products Largely Enter Mass Production
P...
LiDAR (Automotive, Pan-Robotics, etc.) Application Research Report, 2025-2026
LiDAR research: hardware competition shifts to combined sensing capabilities from "point cloud" to "images” and from automotive to robots The "LiDAR (Automotive, Pan-Robotics, ...
Global and China Passenger Car T-Box Market Report, 2026
Based on 2025 market data and the latest business layouts of OEMs and suppliers from 2025 to 2026, this report analyzes the development status quo and future trends of China’s passenger car T-Box mark...
Global and China Range Extended Electric Vehicle (REEV) and Plug-in Hybrid Electric Vehicle (PHEV) Research Report, 2026
Research on REEVs and PHEVs: Foreign OEMs are considering extended-range technology as an important strategic option and will launch a series of new vehicles
Global PHEVs & REEVs tend to be domin...