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Zhengtong Technical Team

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Latest from Zhengtong Technical Team

29 recent articles

Zhengtong Technical Team

Apr 15, 2025 · Artificial Intelligence

FAST‑LIO2 LiDAR‑IMU SLAM Implementation and Evaluation on Qiji Autonomous Patrol Vehicles

This article presents the technical background of SLAM, explains why GNSS‑based navigation fails in complex urban environments, describes the selection and testing of several LiDAR‑IMU SLAM algorithms—including FAST‑LIO2—on Qiji unmanned vehicles, and details the hardware configuration, algorithmic improvements, experimental workflow, and positioning results achieved in a real‑world patrol project.

FAST-LIO2LiDARMapping

0 likes · 9 min read

FAST‑LIO2 LiDAR‑IMU SLAM Implementation and Evaluation on Qiji Autonomous Patrol Vehicles

Zhengtong Technical Team

Sep 3, 2024 · Fundamentals

Overview of Common 3D GIS Data Models and Their Applications

This article surveys common 3D GIS data models, including tilted photography, single-body, OSM, CAD-layered, BIM, and manual models, discussing their characteristics, advantages, limitations, and practical applications in urban visualization and GIS scenarios.

3D GISBIMCAD

0 likes · 16 min read

Overview of Common 3D GIS Data Models and Their Applications

Zhengtong Technical Team

Sep 25, 2023 · Artificial Intelligence

Compliance Test Report of the "Qi Ji" Autonomous Driving Vehicle A2 According to Standard T/CSAE 285‑2022

On September 22, the self‑designed "Qi Ji" A2 autonomous vehicle for smart‑city data production was inspected by China Merchants Group Vehicle Technology Research Institute, passed all 11 major test items of the T/CSAE 285‑2022 functional‑type unmanned vehicle field test standard, and the detailed results are presented in this report.

AISmart CityStandards

0 likes · 29 min read

Compliance Test Report of the "Qi Ji" Autonomous Driving Vehicle A2 According to Standard T/CSAE 285‑2022

Zhengtong Technical Team

Aug 23, 2023 · Game Development

Enhancing Bloom Effect in WebGL: Implementation, Optimization, and Performance Comparison

This article explains why enhancing bloom (glow) effects is important for visual attention and scene aesthetics, outlines a generic WebGL implementation pipeline, discusses factors influencing bloom quality, and presents the Crystal WebGL engine's optimizations and performance comparisons between traditional and mipmap‑based approaches.

BloomGraphicsRendering

0 likes · 7 min read

Enhancing Bloom Effect in WebGL: Implementation, Optimization, and Performance Comparison

Zhengtong Technical Team

Jan 18, 2023 · Cloud Native

CI/CD Pipeline Design and Implementation Using Tekton, Argo CD, and Redmine on Kubernetes

This article describes a cloud‑native CI/CD pipeline built on Kubernetes that leverages Tekton for continuous integration, Argo CD for continuous deployment, and Redmine for project management, detailing system design, task flow, usage steps, and achieved operational benefits.

Argo CDAutomationCloud Native

0 likes · 18 min read

CI/CD Pipeline Design and Implementation Using Tekton, Argo CD, and Redmine on Kubernetes

Zhengtong Technical Team

Dec 30, 2022 · Frontend Development

Implementation of Component Drag‑and‑Drop in the Wukong Low‑Code Visual Platform

This article explains how the Wukong low‑code visual platform implements component drag‑and‑drop, covering material‑to‑canvas dragging, intra‑canvas movement, resizing via eight handles, alignment guide generation, performance optimizations using CSS transforms, and component encapsulation with Vue 3.

AlignmentComponentDrag-and-Drop

0 likes · 14 min read

Implementation of Component Drag‑and‑Drop in the Wukong Low‑Code Visual Platform

Zhengtong Technical Team

Dec 6, 2022 · Big Data

Beidou Grid Code: Theory, Implementation, and Urban Management Applications

This article introduces the Beidou Grid Code, its theoretical foundation in GeoSOT, detailed hierarchical encoding rules, implementation challenges using MySQL and JPA, and showcases practical urban management applications such as case reporting, hotspot analysis, indoor positioning, and data security.

BeidouBig DataGIS

0 likes · 16 min read

Beidou Grid Code: Theory, Implementation, and Urban Management Applications

Zhengtong Technical Team

Sep 22, 2022 · Artificial Intelligence

How YOLOv5 Powers Real‑Time City Management Video Analysis

This article explains the background, workflow, and technical details of using the YOLOv5 one‑stage object detection algorithm to enable fast, accurate video analytics for urban management, covering data augmentation, backbone design, FPN‑PAN neck, and prediction output processing.

AIComputer VisionDeep Learning

0 likes · 8 min read

How YOLOv5 Powers Real‑Time City Management Video Analysis

Zhengtong Technical Team

Jun 2, 2022 · Frontend Development

Improving WebGL Engine Performance with IndexedDB: Data Retrieval and Update Strategies

This article explains how the Crystal WebGL engine leverages IndexedDB to reduce network requests, accelerate three‑dimensional data loading, and implement efficient caching and update mechanisms, thereby significantly improving overall rendering performance and user experience.

Data CachingIndexedDBWebGL

0 likes · 7 min read

Improving WebGL Engine Performance with IndexedDB: Data Retrieval and Update Strategies

Zhengtong Technical Team

Mar 18, 2022 · Fundamentals

Spatial Coordinate Reference Systems and Transformations for 3D GIS Applications

This article explains the fundamentals of geodetic and Earth‑centered coordinate systems, their mathematical relationships, and how to convert between geodetic latitude/longitude/height, ECEF, ENU, and Web Mercator coordinates, providing detailed derivations, diagrams, and a C++ implementation example.

3D mappingCoordinate TransformationECEF

0 likes · 15 min read

Spatial Coordinate Reference Systems and Transformations for 3D GIS Applications