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3articles

📜Porting Kuzushiji Character Detection and Classical-Japanese OCR to JS/Next.js Without Python — ONNX Quantization and Library Extraction

A record of porting kuzushiji/historical-document character detection (YOLOv11) and NDL's koten-OCR-Lite (RTMDet + PARSeq) to JS/Next.js with onnxruntime-node — no Python. Covers ONNX export, SAHI, line detection, an int8 quantization accuracy comparison, why it is hard to run on Vercel, and extracting the core into a shared library.

kuzushijiocronnxonnxruntime

📜KotenOCR v1.3.0: Dual OCR Modes for Classical and Modern Japanese Text

KotenOCR v1.3.0 adds NDLOCR-Lite support for modern printed text OCR alongside the existing classical text (kuzushiji) mode, with one-tap mode switching and parallelized recognition for up to 6.7x speedup.

iosocrkuzushijindl

📜KotenOCR: An Offline iOS App for Recognizing Classical Japanese Cursive Script

KotenOCR is a free iOS app that runs the NDL Koten OCR-Lite model entirely on-device, enabling offline recognition of kuzushiji (classical Japanese cursive script) from photos.

iosocrkuzushijiswift