japanese-input

AnkiWeb addon 1324989483

Lets users practice Japanese handwriting by drawing hiragana, katakana, or kanji in Anki, recognizing input and checking kanji against references with feedback.
AI-generated summary; may contain mistakes.

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AnkiWeb

Rating
0 (👍 0 · 👎 0)
Updated
2026-07-12
Anki versions
26.05~
Description language
en

Maintenance

active

  • Last update or commit was 42 days before the snapshot (2026-08-20).
  • The repository has 4 GitHub Actions workflows.

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README

Japanese Handwriting Input for Anki

An Anki add-on for practicing Japanese handwriting. Draw a hiragana, katakana, or kanji on a canvas inside Anki, and the add-on recognizes what you wrote and inserts it into the active field. For kanji practice, it can also check your drawing against a target character and show you both what went wrong and how it should look.

⚠️ Early development: Handwriting recognition and writing correction may not yet be accurate enough for reliable use.

Try the live demo of the recognition and analysis engine right in your browser. Note that the demo always reflects the latest code, so it can be ahead of what's in the installable add-on.

Features

  • Handwriting recognition

    • draw a hiragana, katakana, or kanji on the canvas and get the matching character inserted into the active field.

  • Kanji handwriting feedback

    • draw a kanji you're studying and see your handwriting checked against the reference, with mistakes marked on your strokes and a corrected version shown alongside.

alt text

Install the Add-on

  1. Open Anki
  2. Go to Tools → Add-ons
  3. Click Get Add-ons...
  4. Enter this Add-on ID: 1324989483
  5. Restart Anki after installation.

Recognition

The add-on currently uses a recognition engine based on HMM.

This benchmark tracks the recognition engines and models the add-on uses, or has considered using over time. The table compares the percentage of correctly recognized characters across samples from 6 writers of the HANDS-nakayosi_t-98-09 dataset for the DTW engine, Zinnia (using a model from Tegaki) and a custom HMM recognizer. The selected writers are evenly split in men and women.

Hiragana Katakana Kanji Japanese
correct (HMM) 92.85% 81.61% 96.55% 93.71%
correct (DTW) 59.5% 62.67% 54.23% 53.15%
correct (Zinnia+Tegaki) 21.53% 2.01% 47.77% 45.13%

Stroke Correspondence

The stroke correspondence algorithm has limited support for:

  • wrong stroke order
  • missing strokes
  • added strokes
  • merged strokes

The table compares the percentage of character samples with correctly matched strokes from 6 writers from the HANDS-nakayosi_t-98-09 dataset for each 漢検 level.

Level １０級 ９級
Tested 80/80 0/160
Correct 88.04% -

License & Acknowledgment

The KanjiVG-derived data in data/ is licensed under CC BY-SA 3.0. See data/LICENSE.txt for full attribution.

This project uses TUAT Nakagawa Lab. HANDS-nakayosi_t-98-09 stroke database.