---
title: DiffusionPen Ukrainian Handwriting
emoji: ✍️
colorFrom: blue
colorTo: yellow
sdk: gradio
sdk_version: "5.25.0"
app_file: app.py
pinned: false
license: apache-2.0
hardware: zero-gpu
---

# DiffusionPen — Ukrainian Handwriting Generation

Generates handwritten Ukrainian text conditioned on writer style using a diffusion model.

**Architecture:** DiffusionPen (Nikolaidou et al., ECCV 2024) with Stable Diffusion v1.5 VAE + DDIM scheduler  
**Training data:** 126K Ukrainian handwritten word images from 308 writers  
**Text encoder:** CANINE-C  
**Style encoder:** MobileNetV2  

## Usage

1. Enter a Ukrainian word or sentence
2. Pick a writer ID (or leave on Random)
3. Adjust CFG scale (5.0 recommended)
4. Click Generate

## Notes

- Short words (1–3 chars) have higher error rate (~42% CER) due to recognizer limitations, not generation failure
- Rare letters (ґ, Є, Щ) and apostrophe words (м'яч) may render slightly weaker
- Fix the variation seed to any positive integer to reproduce exact output; -1 = random