Java Architecture Diary

Aug 17, 2026 · Artificial Intelligence

Pure Java OCR with mica-ppocr: How It Parses Documents and Invoices

This article details the pure‑Java mica‑ppocr library built on Java 17 and ONNX Runtime, covering its rapid version evolution, core engine upgrades, structured parsing of six document types, Spring Boot and Solon integration, performance optimizations, and architectural refactors, providing a comprehensive technical overview for developers.