2026
Release candidate · August 2026
TH-LDP: designing low-distortion coordinates
Phisan Santitamnont’s RC-1 proposal brings together projection definitions, Python code and regional evaluation reports.
Phisan Santitamnont
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Faculty of Engineering · Chulalongkorn University
Better insight.
Better infrastructure.
Civil engineering, geospatial science and AI. Explore the people and research behind infrastructure that serves society.
15Faculty & Fellows
4Core Disciplines
117Curated Works
OpenCode & Datasets
Center of Excellence in Infrastructure Management
Scientific Research & Methods
Research, in practice.
Explore the questions, methods and published work across physical infrastructure and AI.
YOLO26-RD · Learning from road-survey data
A pavement-distress detector informed by an audit of road-survey imagery. LearnableContrast adjusts local contrast, while EdgeSPD uses edge information during downsampling. The study compares five model scales with matched baselines; its findings are reported in an arXiv preprint.
YOLO9tr · Lightweight pavement-damage detection
A lightweight pavement-damage detector based on YOLOv9 with partial attention. The study evaluates accuracy and inference speed using road images from multiple countries and an expanded set of damage classes. The journal article and its earlier arXiv version are grouped as one work.
From detection to 3D road-damage assessment
Combines YOLO9tr damage detection with calibrated monocular depth estimation to assess pavement damage using a vehicle-mounted camera. The conference manuscript investigates both damage classification and dimensional measurement, extending the detector toward road-maintenance assessment.
Seeing the assets along our roads
A road-asset detector combines a pretrained Vision Transformer with YOLOX and a feature-pyramid decoder. The study evaluates detection on Thai highway imagery, including small roadside objects such as kilometer stones.
Road safety & transport
Understanding road risk, travel behaviour and network performance through safety assessment, traffic information and transport research.
Pavements & asset management
Connecting pavement condition, material performance and life-cycle costs to maintenance planning and infrastructure decisions.
Geospatial information & surveying
Developing knowledge and tools around geographic information systems, surveying and infrastructure information management.
Disaster information & resilience
Studying how information supports decisions during disasters, alongside knowledge exchange on preparedness and response.
Research expertise
Field evidence. Engineering analysis.
Published work connects civil engineering, field measurement and data science across road assets, pavement performance, geospatial surveying and maintenance planning.
Faculty & Fellows
Ideas start with people.
Meet the team driving the center forward, alongside our advisers and research community.
Center Lead
Dr. Pawarotorn Chaipetch
Road maintenance and computer vision
Research connects road-maintenance prioritization, budget allocation and computer vision for pavement damage assessment.
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Center adviser
Assoc. Prof. Dr. Boonchai Sangpetngam
Pavement materials and performance
View portfolio & papers →
Center adviser
Prof. Dr. Supot Teachavorasinskun
Geotechnical engineering
View portfolio & papers →
Center adviser
Prof. Dr. Tospol Pinkaew
Structural engineering
View portfolio & papers →
Center adviser
Prof. Dr. Kasem Choocharukul
AI for road safety and sustainable mobility
View portfolio & papers →
Center adviser
Asst. Prof. Dr. Suebskul Phiphobmongkol
Image analysis and intelligent transport
View portfolio & papers →
Center adviser
Asst. Prof. Dr. Chaiyaporn Puprasert
Environmental engineering
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Center Researcher
Assoc. Prof. Dr. Thanarat Chalidabhongse
Computer vision and scene understanding
View portfolio & papers →
Center Researcher
Assoc. Prof. Dr. Jittichai Rudjanakanoknad
Traffic operations and transit planning
View portfolio & papers →
Center Researcher
Assoc. Prof. Dr. Teetat Charoenkalunyuta
GNSS positioning and cadastral surveying
View portfolio & papers →
Center Researcher
Assoc. Prof. Dr. Nakhon Kokkaew
Infrastructure evaluation and construction management
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Center Researcher
Dr. Weerachai Wongweeranimit
Infrastructure assessment and surveying
View portfolio & papers →
Center Researcher
Mr. Sittinun Thongbai
Road-asset computer vision
View portfolio & papers →
Center Researcher
Theeraruk Maneenart
UAV mapping and photogrammetry
View portfolio & papers →
Center Researcher
Mr. Nuntawat Lersinghanart
Pavement friction and maintenance
View portfolio & papers →Projects & impact
From ideas to the field.
2025
Programme outcomes · January report
From road assessment to safer streets
iRAP reports 500 km of Bangkok roads assessed and 360 high-risk sites upgraded through ThaiRAP’s work with BMA. Kasem Choocharukul is identified as ThaiRAP lead.
Explore this work ↗2024
Industry prototype · July presentation
Giving reclaimed asphalt a second life
Boonchai Sangpetngam and Tipco Asphalt presented a prototype combining reclaimed asphalt concrete with a waste-palm-oil rejuvenator.
Explore this work ↗Peer-Reviewed Research
Published knowledge.
A source-linked selection spanning infrastructure and computing.
A Comparative Performance Study of Conventional Hot Mix Asphalt Concrete and Plastic Waste-Modified Hot Mix Asphalt Concrete
Road and Airfield Pavement Technology · ICPT 2025, Lecture Notes in Civil Engineering 771, 847–858
Research focus
Compares conventional asphalt concrete and recycled-plastic-modified mixtures using laboratory and field tests of stiffness, moisture resistance, rutting and fatigue.
Ethical Appetite: The Market Dynamics of Price Premiums for Animal Welfare-Friendly Food Products
Research on World Agricultural Economy, 7(3)
Research focus
Examines associations between animal-welfare labels and food prices using Swiss supermarket data, considering both consumer preferences and production costs.
Optimizing Budget Allocation for Low-Volume Roads Through the AHP-TOPSIS Approach
Suranaree Journal of Science and Technology, 33(4), 010450 (1–15)
Research focus
Evaluates an AHP–TOPSIS framework for rural-road maintenance prioritization using 724 one-kilometer road sections across eight regional bureaus in Thailand. Compared with conventional allocation under the same budget, the study reports 7.4% greater maintenance coverage and lower regional variation in post-maintenance roughness.
Software & tools
Tools to explore.
Explore CE in 3D
Follow a simulated city journey from street level to a drone’s-eye view and orbit. Discover the center along the way.
Interactive example · Survey City Journey
Explore in 3D
Research code · GitHub · 2026
YOLO26-RD · road-damage detection
Road-damage detection code for alligator cracking, linear cracks and patching. The authors’ repository includes installation and model training instructions.
Research code · GitHub · 2024
YOLO9tr · road-damage detection
A lightweight pavement-damage detector with attention mechanisms. Explore the authors’ training and inference code and setup instructions.
Paper implementation · MIT · 2025
HER2CP: classification with uncertainty
Feature extraction, classifier training and analysis notebooks for HER2 classification in a medical-imaging collaboration coauthored by Thanarat Chalidabhongse.
Teaching & resources
Knowledge to build on.
2023
Recorded workshop · UCL / Chula
AI for traffic safety: UK–Thai workshop
UCL’s workshop page provides the programme and recording of the June 2023 event, including a presentation by Kasem Choocharukul.
Explore this work ↗2022
Reference material + code
UAV photogrammetry reference material
Phisan’s collection includes digital-camera material and a geotag plotting example for UAV map production.
Phisan Santitamnont
Explore this work ↗Research news
Latest updates
Explore the timeline ↗Research and activities involving our researchers, with dates and attribution from the linked sources.
Journal article
Prioritising rural-road maintenance with AHP–TOPSIS
Pawarotorn Chaipetch and coauthors study maintenance priorities across 724 road sections, balancing road condition, budget and regional needs.
Preprint · revised version
YOLO26-RD: road-survey research with open code
A preprint coauthored by Pawarotorn Chaipetch explores road-damage detection using survey imagery, learnable contrast and edge-guided downsampling. The authors provide a public repository.
Researcher activity · Source report
Pawarotorn shares digital infrastructure practice
Infra Plus reports Pawarotorn Chaipetch’s participation as its representative in an Engineering Expo panel on field data, GIS, AI and infrastructure management.
News & Knowledge Exchange
From the archive.
Activities and knowledge exchange, with their original dates.
Collaboration & knowledge exchange
Working together.
Joint activities and knowledge exchange with industry and government, documented in the center’s archive.
Industry ·
Infra Plus Co., Ltd.
Co-organized an asset and infrastructure management seminar with the research unit for local-government personnel.
View activity record ↗Government ·
Department of Highways
Kasem Choocharukul delivered iRAP Star Rating training for department personnel on 9–10 July 2020.
View activity record ↗Government ·
Department of Rural Roads
Boonchai Sangpetngam contributed to a knowledge-transfer seminar on integrating rural-road network data using iAmR.
View activity record ↗Years refer to the activities described. These records do not confirm current partnership or sponsorship status.
Study & collaborate
Bring an engineering question.
Explore graduate study, find a researcher working in your field, and connect through the university’s official channels.
Let’s build knowledge.
And better infrastructure.
Connect with the center about research collaboration, academic services and knowledge exchange.
Study & research enquiriesCenter of Excellence in Infrastructure Management
Room 314, 3rd floor, Civil Engineering BuildingFaculty of Engineering, Chulalongkorn University
Phaya Thai Road, Wang Mai, Pathum Wan
Bangkok 10330, Thailand