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Latest from Amap Tech

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Amap Tech

Apr 14, 2025 · Artificial Intelligence

HumanRig: Learning Automatic Rigging for Humanoid Characters Using a Large‑Scale Dataset

HumanRig introduces a large‑scale dataset of 11,434 AI‑generated T‑pose humanoid meshes with unified skeletons, skinning weights, joint data and images, and leverages it in a novel automatic rigging pipeline—featuring a prior‑guided skeleton estimator, a U‑shaped point transformer, and a mesh‑skeleton mutual attention network—that significantly outperforms previous methods in skeleton accuracy and skinning quality.

3D animationAIautomatic rigging

0 likes · 12 min read

HumanRig: Learning Automatic Rigging for Humanoid Characters Using a Large‑Scale Dataset

Amap Tech

Apr 7, 2025 · Mobile Development

Gaode Uninhabited Area Project: Satellite Rescue and Offline Navigation Technologies

Gaode’s Uninhabited Area project introduces Satellite Rescue, which transmits encrypted, natural‑language emergency messages via satellite and a rescue chatroom to boost response speed, and Offline Navigation, employing quadtree indexing, predictive caching and seamless mode switching to guide users through network‑dead zones, proven in harsh Inner Mongolian terrains.

Mobile AppSatellite Communicationdata compression

0 likes · 8 min read

Gaode Uninhabited Area Project: Satellite Rescue and Offline Navigation Technologies

Amap Tech

Mar 21, 2025 · Mobile Development

Gaode Map Terminal Architecture: Achieving Ultra‑Stable, High‑Performance, and Efficient Mobile Mapping

Gaode Map’s new integrated container architecture, combined with on‑demand loading, package slimming, and multi‑system/device/language support, delivers ultra‑stable, high‑availability navigation with second‑level startup, halved binary size and traffic, enabling efficient, cross‑platform mobile mapping for diverse hardware.

Container Architectureapp startupcross‑platform

0 likes · 12 min read

Gaode Map Terminal Architecture: Achieving Ultra‑Stable, High‑Performance, and Efficient Mobile Mapping

Amap Tech

Mar 19, 2025 · Artificial Intelligence

Driving by the Rules: Integrating Lane-Level Traffic Regulations into Online HD Maps

Gaode Map and Xi'an Jiaotong University introduce the “Driving by the Rules” task, releasing the MapDR benchmark that integrates lane‑level traffic‑sign regulations into online‑constructed HD maps, and provide modular (VLE‑MEE) and end‑to‑end (RuleVLM) baselines to evaluate rule extraction and lane association.

AIAutonomous DrivingHD maps

0 likes · 8 min read

Driving by the Rules: Integrating Lane-Level Traffic Regulations into Online HD Maps

Amap Tech

Feb 28, 2024 · Mobile Development

Deep Dive into Android ClassLoader and findLoadedClass Mechanism for Code Coverage

The article details a high‑performance, high‑stability Android code‑coverage technique that creates a surrogate ClassLoader, copies the target PathClassLoader’s private classTable pointer, and invokes findLoadedClass on this loader to query a class’s load state without triggering Android’s native optimization that would otherwise automatically load the class.

AndroidClassLoaderNative

0 likes · 13 min read

Deep Dive into Android ClassLoader and findLoadedClass Mechanism for Code Coverage

Amap Tech

Feb 5, 2024 · Artificial Intelligence

Gaode Tech 2023 Highlights: 15 Popular Articles on AI, Data, Mapping, and Navigation Technologies

Gaode Technology’s 2023 roundup showcases fifteen of its most-read articles, spanning AI infrastructure evolution, cloud‑native data optimization, BEV‑based perception, real‑time crowdsourced mapping, ETA prediction, lane‑level navigation, AR HUD, architecture design, low‑code platforms, and high‑performance Android testing.

AIData EngineeringMapping

0 likes · 9 min read

Gaode Tech 2023 Highlights: 15 Popular Articles on AI, Data, Mapping, and Navigation Technologies

Amap Tech

Jan 26, 2024 · Fundamentals

Debugging a GCC O3 Loop Vectorization Crash: Analysis, Root Cause, and Fix

A segmentation fault in a simple tile‑index copy loop was traced to GCC 9.2’s -O3 loop‑vectorization pass miscalculating structure offsets, and the issue was resolved by disabling -ftree-loop-vectorize or upgrading the compiler, as newer GCC versions and Clang handle the code correctly.

GCCNeonassembly

0 likes · 26 min read

Debugging a GCC O3 Loop Vectorization Crash: Analysis, Root Cause, and Fix

Amap Tech

Jan 11, 2024 · Frontend Development

Optimizing Multi‑Scene Rendering on AMap by Sharing a WebGL Context

Gaode solved the WebGL‑context limit in AMap by rendering all visual layers on a single canvas with a shared context, disabling autoClear, preserving depth ordering, and using per‑layer EffectComposers merged via a final composer, enabling multiple scenes and post‑processing without exceeding browser limits.

AmapEffectComposerRendering

0 likes · 11 min read

Optimizing Multi‑Scene Rendering on AMap by Sharing a WebGL Context

Amap Tech

Dec 28, 2023 · Backend Development

Rate Limiting Algorithms and Their Java Implementations

Rate limiting protects system stability by capping request rates, and this article explains five Java algorithms—Fixed Window, Sliding Window, Leaky Bucket, Token Bucket, and Guava's RateLimiter—showing their principles, pros and cons, and providing sample implementations and a Spring @Limit annotation for practical enforcement.

AlgorithmGuavaJava

0 likes · 17 min read

Rate Limiting Algorithms and Their Java Implementations

Amap Tech

Dec 21, 2023 · Artificial Intelligence

Creating a High-Quality Live Map for Intelligent Driving

At the fifth 2023 Mapping Technology Forum, Amap’s General Manager Xiang Zhe presented his report on creating a high‑quality ‘Live’ map, describing how the company’s HQ Live Map combines advanced perception with continuously refreshed map data to support intelligent driving and ADAS applications.

AIGeospatial DataHigh‑Definition Mapping

0 likes · 3 min read

Creating a High-Quality Live Map for Intelligent Driving