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Latest from Amap Tech

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Amap Tech

Dec 4, 2023 · Artificial Intelligence

End-to-End BEV+Transformer Perception and Modeling for High-Definition Map Production

By fusing LiDAR point clouds and camera images into a unified bird‑eye‑view space and applying Transformer‑based perception, multi‑sensor fusion, and graph‑diffusion modeling, the proposed BEV+Transformer framework automatically detects and smooths ground‑level line features and signs for high‑definition maps with centimeter‑level accuracy, boosting production efficiency and reducing cost.

BEVHD mapTransformer

0 likes · 20 min read

End-to-End BEV+Transformer Perception and Modeling for High-Definition Map Production

Amap Tech

Nov 21, 2023 · Fundamentals

The Essence of Quality Assurance and the Value of Testing Roles

Quality assurance is fundamentally about exhaustive falsification to lower online risk, while the testing process seeks optimal ROI by balancing defect discovery against resource investment; a tester’s value hinges on business risk, system maturity, and the ability to become increasingly irreplaceable through deep domain knowledge, proactive risk mitigation, and innovative, end‑to‑end quality solutions.

ROIquality assurancerisk management

0 likes · 11 min read

The Essence of Quality Assurance and the Value of Testing Roles

Amap Tech

Nov 15, 2023 · Artificial Intelligence

Vision‑Based Bird’s‑Eye‑View (BEV) Representation and Solutions for Autonomous Driving

Vision‑based Bird’s‑Eye‑View (BEV) transforms camera data into a scale‑invariant, geometry‑friendly top‑down map using perspective‑transformation modules such as Lift‑Splat‑Shoot and Pseudo‑LiDAR, incorporates deformable convolutions and attention, and underpins modern autonomous‑driving detectors like BEVDet, BEVDepth, Detr3D, BEVFormer and PETR, while future research targets depth‑estimation bottlenecks, multimodal transformer fusion, and foundation‑model generalization.

3D PerceptionBEV

0 likes · 19 min read

Vision‑Based Bird’s‑Eye‑View (BEV) Representation and Solutions for Autonomous Driving

Amap Tech

Nov 1, 2023 · Backend Development

Gaode Go Ecosystem Evolution, Cloud‑Native Serverless Practices, and Project Refactoring Experience

The article details Gaode’s journey of building a high‑performance Go ecosystem that scaled from zero to tens of millions of QPS, comparing Go with Java and Erlang, outlining cloud‑native serverless architecture, and sharing real‑world refactoring and optimization case studies such as a million‑QPS rendering gateway and a Go‑based sharding middleware.

GCGoServerless

0 likes · 34 min read

Gaode Go Ecosystem Evolution, Cloud‑Native Serverless Practices, and Project Refactoring Experience

Amap Tech

Sep 27, 2023 · Fundamentals

Crash Analysis of C++ LooperObserverMan: Memory Reordering and Segmentation Fault

The crash in asl::LooperObserverMan::notifyIdle was traced to a compiler‑level store‑store reordering that exposed an uninitialized observer pointer, causing an illegal memory access, and was fixed by inserting a memory barrier or using proper atomic ordering to enforce correct initialization order.

C++Memory Reorderingcrash analysis

0 likes · 32 min read

Crash Analysis of C++ LooperObserverMan: Memory Reordering and Segmentation Fault

Amap Tech

Sep 15, 2023 · R&D Management

Understanding Architecture: Goals, Resources, Behaviors, and Decision‑Making for Architects

The article broadens software architecture beyond structural design to encompass people, processes, and business value, urging architects to balance realistic, flexible goals, limited resources, commercial‑focused behaviors, and industry trends so they can deliver cost‑effective, scalable solutions that align technology with organizational objectives.

business valuedecision-makingresource management

0 likes · 18 min read

Understanding Architecture: Goals, Resources, Behaviors, and Decision‑Making for Architects

Amap Tech

Sep 5, 2023 · Artificial Intelligence

Lane‑Level Navigation Simulation: Road Scene Strategy Engine and Vehicle‑Behavior Modeling

Amap’s lane‑level navigation simulation combines a road‑scene strategy engine—using modified ant‑colony optimization to efficiently cover national and city road networks—with a vehicle‑behavior engine that plans lane‑change paths via Dijkstra and models realistic speed profiles through reaction and curvature intervals, enabling custom high‑precision testing while cutting road‑test costs.

Simulationant colony optimizationdynamic speed modeling

0 likes · 14 min read

Lane‑Level Navigation Simulation: Road Scene Strategy Engine and Vehicle‑Behavior Modeling

Amap Tech

Aug 29, 2023 · Mobile Development

Design and Implementation of a High‑Performance Code Coverage Collection Solution for Android Apps

The paper presents a high‑performance Android code‑coverage solution that uses standard reflection to read the ClassLoader’s ClassTable, achieving over five‑times faster collection than existing tools while remaining stable, compatible, multi‑process capable, and enabling incremental, cloud‑based reporting for reducing app size.

Runtime Instrumentationmobile developmentmulti-process

0 likes · 15 min read

Design and Implementation of a High‑Performance Code Coverage Collection Solution for Android Apps

Amap Tech

Aug 10, 2023 · Backend Development

Gaode Business Framework (GBF): A Domain‑Driven Approach for Unified Portal Architecture

The Gaode Business Framework (GBF) is a lightweight, domain‑driven solution that unifies disparate industry portals by partitioning stable domains, standardizing interfaces, and providing customizable implementations, thereby eliminating duplicated glue code, improving design quality, reducing development costs, and enhancing stability and cross‑team collaboration.

Domain-Driven DesignGBFJava

0 likes · 19 min read

Gaode Business Framework (GBF): A Domain‑Driven Approach for Unified Portal Architecture

Amap Tech

Aug 1, 2023 · Databases

Gaode’s Adoption of OceanBase: Architecture, Practices, and Future Roadmap

Gaode migrated its core navigation, traffic, and financial services to OceanBase, leveraging Paxos‑based multi‑replica consistency, LSM‑Tree storage, and distributed transactions, selecting multi‑point write for massive sync workloads and central‑write for latency‑critical queries, achieving sub‑millisecond latency, significant storage savings, and a roadmap toward broader cost‑effective, serverless deployment.

Cloud NativeDistributed DatabaseOceanBase

0 likes · 58 min read

Gaode’s Adoption of OceanBase: Architecture, Practices, and Future Roadmap