Medical Imaging & Diagnostic Software Rebuild – FAS Facial Analysis Platform
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Introduction
Modernizing FAS Facial Analysis Software for Clinical Precision
Seattle Software Developers partnered with clinical researchers to rebuild and modernize a legacy Windows desktop application used for standardized Fetal Alcohol Syndrome (FAS) facial analysis. The original software, built on outdated desktop frameworks, required a full architectural modernization while preserving its validated clinical measurement logic.
The goal was to deliver a secure, high-performance Windows 10/11 application capable of performing pixel-calibrated facial measurements, computing four-digit diagnostic codes, and generating standardized clinical reports — all within a modern .NET 8 architecture.
Deliverables
Full legacy desktop application rebuild
.NET 8 (WPF / WinUI 3) modern Windows architecture
OpenCV / SkiaSharp image processing integration
Pixel-to-millimeter calibration engine
Four-Digit Diagnostic Code computation logic
Local SQLite embedded database
Secure patient record storage (no image binaries retained)
Automated clinical report generation (PDF / Print)
”“The team at Seattle Software Developers is thorough, innovative, and compassionate. They’ve worked with our team to develop exactly what we need, with the details not going unnoticed.”
Stephanie JohnsonOperating Manager
The Challenges
Clinical Integrity
Rebuilding a validated clinical diagnostic tool without altering its core medical logic or diagnostic methodology.
Measurement Precision
Ensuring precise pixel-to-millimeter calibration for standardized facial measurements across multiple image orientations (frontal, three-quarter, lateral).
Imaging Tools
Implementing image processing overlays, polygon tracing, and measurement snapping tools within a modern Windows UI framework.
System Performance
Maintaining data reliability and performance while transitioning to 64-bit Windows systems.
Diagnostic Scoring
Supporting structured clinical scoring logic including Z-scores, −2 SD thresholds, normative chart comparisons, and four-digit diagnostic code classification.
Identified Obstacles
Legacy source code required reverse engineering and refactoring.
Normative charts (e.g., Stromland data) required structured local storage.
High precision image measurement required custom canvas controls.
Reports needed embedded thumbnails without storing raw photo binaries.
System required stand-alone deployment with embedded database architecture.
Our Solutions
Modern .NET 8 Architecture
Rebuilt the platform using WPF/WinUI 3 with MVVM pattern for maintainability, scalability, and performance optimization on Windows 10/11 64-bit systems.
Advanced Image Processing Integration
Leveraged OpenCV and SkiaSharp for precise pixel measurements, zoom/pan capabilities, line drawing, polygon outlining, and overlay rendering.
Calibration & Measurement Engine
Implemented pixel-to-millimeter conversion using forehead reference calibration, enabling accurate palpebral fissure length, intercanthal distance, philtrum rank, and lip circularity calculations.
Four-Digit Diagnostic Code Automation
Built automated scoring logic to compute eye metrics, philtrum ranking, upper lip circularity, and generate composite A/B/C classifications aligned with clinical FAS diagnostic standards.
Local Embedded Database
Implemented SQLite with optional EF Core integration to manage patient metadata, stored measurements, and record retrieval without storing photo binaries (file-path reference model).
Structured Reporting Engine
Integrated RDLC/FastReport for PDF and print output, embedding thumbnails, measurement data, quality assessments, and composite diagnostic results.
Quality & Anomaly Tracking Modules
Developed structured tabs for photo reliability evaluation, minor anomaly documentation, and qualitative scoring outputs.
Configurable Framework
Used JSON configuration files to allow customization of race options, photo sources, and assessor lists without code modifications.
Our Results
The rebuilt FAS Facial Analysis Platform delivers a modern, high-performance medical imaging desktop application that preserves validated clinical measurement standards while significantly improving usability, stability, and data reliability.
Clinicians and researchers now benefit from faster image calibration, automated diagnostic scoring, structured patient record management, and professional report generation within a secure, stand-alone Windows environment.
This project highlights SSD’s expertise in healthcare software development, medical imaging applications, .NET desktop modernization, image-processing systems, and clinical diagnostic automation.
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