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Automated Restoration of Degraded Historical Images

National Heritage Library July 2023
GANs PyTorch Image Inpainting Colorization OpenCV Cloud GPU MLOps
Automated Restoration of Degraded Historical Images - Main project visualization showing Their valuable collection of historical photographs was deteriorating, but professional restoration

The Challenge

Their valuable collection of historical photographs was deteriorating, but professional restoration was a slow, expensive manual process (2+ hours per image). This made large-scale preservation projects impossible, leaving the archives at risk.

Our Solution

Developed a hybrid pipeline combining GAN-based inpainting (to repair damage) and supervised colorization (trained on period-accurate color references). Used a custom loss function that preserves historical authenticity. Implemented a human-in-the-loop system for quality control and fine-tuning. Deployed as a cloud-native service with GPU acceleration.

Results & Impact

Restored 9,000+ customer images with historical accuracy

Reduced per-image processing time from 2 hours to < 30 seconds

Enabled public access to previously unusable archival material

Achieved 92% customer satisfaction with restoration quality

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