First place at Smart India Hackathon 2024: a sensing pipeline that reconstructs what a building actually is, then argues with the plan the municipality approved.

01 Architecture

• Four independent sensing passes fused into one 3D reconstruction, so no single sensor has to be right on its own.
• Paired transmitter and receiver drones map interior structure through WiFi and RF behaviour where line of sight fails.
• LiDAR point clouds and thermal imaging cover exterior geometry, street view passes fill the facade.
• Satellite layer on Sentinel 2 composites: ResNet50 difference mapping plus SSIM analysis to score change between epochs.
• Reconstructed geometry registered against the council's approved CAD plans, so output is a ranked deviation list rather than a raw diff.

02 What is in it

• Won Smart India Hackathon 2024 on problem statement PS1618, at national level.
• Turns a manual on foot audit into a desk review with evidence attached.
• Detects vertical growth and footprint expansion that satellite imagery alone would miss.
• Built on Python, TensorFlow, Keras, OpenCV and Google Earth Engine.