How Orientation-Agnostic OCR Finds Upside-Down Pages in Real Document Batches
Standard OCR engines fail when document scans are rotated 90°, 180°, or 270°. In this deep dive, we break down the engineering behind orientation-agnostic OCR: how a 4-pass in-memory rotation check and dictionary confidence scoring detect upside-down and sideways pages in real document batches.

