Image-Comparison-Autotest

Automated 3D PDF export validation pipeline · STL rendering · C2W matrix reconstruction · SSIM · IoU · Python

Problem

Manual visual inspection of 3D PDF TDP exports is unreliable at scale — subtle camera shifts and geometry drops go undetected.

Solution (3-stage pipeline)

Stage 1 → Stage 2 → Stage 3 diagram

Architecture

Table: each stage, what it does, key decision

Key design decisions

• Why C2W matrix extraction over poster stream extraction
• Why SSIM + IoU together, not just one
• Why morphological dilation (9x9)
• Why orthographic projection not perspective
• Why headless matplotlib (CI deployable)

Results

Table: per-view SSIM, IoU, Pass/Fail

How to run

pip install + commands

Future scope

CI/CD integration, ML-based defect classification