metadata
language: he
tags:
- ocr
- handwriting
- hebrew
- onnx
- android
Hebrew handwriting OCR: on-device model files
Files downloaded by the Android app (github.com/cyttic/android-hwrg), which runs the whole pipeline on the phone.
| File | What |
|---|---|
line_int8.onnx |
CTC line model cyttic/exp35-trocr-base-en-ctc-seqhead-allreal-synpunct (TrOCR-base ViT encoder + 2-layer transformer CTC head, 198 classes), ONNX opset 17, dynamic int8 (all constant-weight MatMuls except the ViT layer-2 MLP fc2, kept in fp32). Inputs: pixel_values (B, 3, 384, 384) in [-1, 1], cols (B,) int64; output log_probs (B, 288, 198). |
line_large_int8.onnx |
CTC line model cyttic/exp35-trocr-large-en-ctc-seqhead-allreal-synpunct (TrOCR-large ViT encoder, 24 layers + 2-layer transformer CTC head), same inputs/outputs; dynamic int8 except the ViT layer-0 MLP fc2 (fp32). Decoded with the punctuation-aware LM fusion (alpha 0.3, beta 0.6, LM on Hebrew letters + space). |
charset.json |
chars[k] = character of class k; chars[0] = CTC blank. |
heb_char6_kn.bin.gz |
Character 6-gram LM, interpolated Kneser-Ney (Ben-Yehuda + DictaGen text), binary layout in tools/export_lm.py. |
The line finder is PaddlePaddle/PP-OCRv5_server_det_onnx (Apache-2.0), downloaded from its own repo.