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---
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license: mit
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configs:
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- config_name: default
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data_files:
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- split: train
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path: data/train-*
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- split: val
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path: data/val-*
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- split: test
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path: data/test-*
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dataset_info:
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features:
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- name: id
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dtype: int64
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- name: image_id
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dtype: string
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- name: image
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dtype: image
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- name: text
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dtype: string
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- name: caption
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dtype: string
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- name: prompt
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dtype: string
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- name: split
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dtype: string
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- name: ocr_confidence
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dtype: float64
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- name: ocr_backend
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dtype: string
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- name: caption_model
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dtype: string
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- name: source
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dtype: string
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- name: sharpness
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dtype: float64
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- name: brightness
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dtype: float64
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- name: contrast
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dtype: float64
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- name: resolution_w
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dtype: int64
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- name: resolution_h
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dtype: int64
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- name: text_length
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dtype: int64
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- name: word_count
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dtype: int64
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- name: phrase_reconstructed
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dtype: bool
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splits:
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- name: train
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num_bytes: 58573006
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num_examples: 800
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- name: val
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num_bytes: 6821157
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num_examples: 100
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- name: test
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num_bytes: 6848431
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num_examples: 100
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download_size: 72132017
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dataset_size: 72242594
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| 1 |
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---
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| 2 |
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license: mit
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| 3 |
+
configs:
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| 4 |
+
- config_name: default
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| 5 |
+
data_files:
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| 6 |
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- split: train
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| 7 |
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path: data/train-*
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- split: val
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path: data/val-*
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| 10 |
+
- split: test
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path: data/test-*
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| 12 |
+
dataset_info:
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+
features:
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- name: id
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dtype: int64
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| 16 |
+
- name: image_id
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dtype: string
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- name: image
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dtype: image
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- name: text
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dtype: string
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+
- name: caption
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dtype: string
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+
- name: prompt
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dtype: string
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+
- name: split
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dtype: string
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- name: ocr_confidence
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dtype: float64
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- name: ocr_backend
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dtype: string
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- name: caption_model
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dtype: string
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- name: source
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dtype: string
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| 36 |
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- name: sharpness
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dtype: float64
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- name: brightness
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dtype: float64
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| 40 |
+
- name: contrast
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| 41 |
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dtype: float64
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| 42 |
+
- name: resolution_w
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| 43 |
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dtype: int64
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| 44 |
+
- name: resolution_h
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dtype: int64
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| 46 |
+
- name: text_length
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dtype: int64
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| 48 |
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- name: word_count
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dtype: int64
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| 50 |
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- name: phrase_reconstructed
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dtype: bool
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| 52 |
+
splits:
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| 53 |
+
- name: train
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| 54 |
+
num_bytes: 58573006
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| 55 |
+
num_examples: 800
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| 56 |
+
- name: val
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| 57 |
+
num_bytes: 6821157
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| 58 |
+
num_examples: 100
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| 59 |
+
- name: test
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num_bytes: 6848431
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num_examples: 100
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download_size: 72132017
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dataset_size: 72242594
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task_categories:
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- image-to-text
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- text-to-image
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language:
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- en
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tags:
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- ocr
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- image-captioning
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- text-rendering
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- synthetic
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- blip2
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- easyocr
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- flux
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size_categories:
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- 1K<n<10K
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source_datasets:
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- stzhao/AnyWord-3M
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---
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# Text-in-Image OCR Dataset
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*Built for **Project 12 — Efficient Image Generation**, as part of the ENSTA course [CSC_5IA21](https://giannifranchi.github.io/CSC_5IA21.html)*
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**Team:** Adam Gassem · Asma Walha · Achraf Chaouch · Takoua Ben Aissa · Amaury Lorin
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**Tutors:** Arturo Mendoza Quispe · Nacim Belkhir
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---
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## Dataset Summary
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A curated text-in-image dataset designed for fine-tuning text-to-image generative models (e.g. FLUX, Stable Diffusion, ControlNet) on accurate **text rendering**. Each sample pairs a real-world image containing readable text with:
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- a verified OCR transcription (EasyOCR),
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- a visual caption (BLIP-2),
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- and a training prompt that embeds the OCR text verbatim.
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Images are sourced from [AnyWord-3M](https://huggingface.co/datasets/stzhao/AnyWord-3M) and pass a rigorous multi-step quality pipeline before inclusion.
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---
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## Dataset Structure
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| Split | Size |
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|-------|------|
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| train | 800 samples |
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| val | 100 samples |
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| test | 100 samples |
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### Fields
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| Field | Type | Description |
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|-------|------|-------------|
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| `image` | Image | The filtered image (512 px, JPEG) |
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| `text` | string | Verified OCR text found in the image |
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| `caption` | string | General visual description generated by BLIP-2 |
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| `prompt` | string | Training prompt embedding the OCR text verbatim |
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| `ocr_confidence` | float | EasyOCR confidence score (0–100) |
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| `ocr_backend` | string | OCR engine used (`easyocr`) |
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| `caption_model` | string | Captioning model used (`blip2` or `blip`) |
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| `source` | string | AnyWord-3M subset of origin |
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| `sharpness` | float | Laplacian variance of the image |
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| `brightness` | float | Mean pixel brightness |
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| `contrast` | float | Pixel standard deviation |
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| `resolution_w` / `resolution_h` | int | Image dimensions in pixels |
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| `text_length` | int | Character count of the OCR text |
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| `word_count` | int | Word count of the OCR text |
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| `phrase_reconstructed` | bool | Whether the full phrase was expanded beyond the bounding box |
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### Sample record
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```json
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{
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"image": "<PIL.Image>",
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"text": "OPEN",
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"caption": "A storefront with a neon sign above the door.",
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"prompt": "A storefront with a neon sign above the door, with the text \"OPEN\" clearly visible",
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"ocr_confidence": 87.5,
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"source": "AnyWord-3M/laion",
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"sharpness": 142.3,
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"resolution_w": 512,
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"resolution_h": 384
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}
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```
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---
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## Usage
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```python
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from datasets import load_dataset
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ds = load_dataset("your-org/your-dataset-name")
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# Access a training sample
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sample = ds["train"][0]
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print(sample["prompt"])
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sample["image"].show()
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```
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For fine-tuning with the prompt field:
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```python
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for sample in ds["train"]:
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image = sample["image"] # PIL image
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prompt = sample["prompt"] # text-conditioned training caption
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text = sample["text"] # ground-truth OCR string
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```
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---
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## Creation Pipeline
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Images are drawn from AnyWord-3M (streamed) and pass through the following stages:
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```
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AnyWord-3M stream
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│
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▼
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1. Annotation filtering → valid, short, English text regions only
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│
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▼
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2. Image quality gate → resolution ≥ 256 px, sharpness ≥ 80,
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brightness 30–230, contrast ≥ 20
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│
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▼
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3. EasyOCR verify → confirm annotated text is readable (conf ≥ 0.40)
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│
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▼
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4. EasyOCR reconstruct → expand to the full visible phrase
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│
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▼
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5. BLIP-2 caption → general visual description
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│
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▼
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6. Prompt construction → natural sentence with OCR text in quotes
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│
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▼
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7. Split & save → 80 % train / 10 % val / 10 % test
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```
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---
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## Source Subsets
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| Subset | Description |
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|--------|-------------|
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| `laion` | Web-crawled natural images |
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| `OCR_COCO_Text` | COCO scene text |
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| `OCR_mlt2019` | Multi-language (English filtered) |
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| `OCR_Art` | Artistic / designed text |
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---
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## Citation & Project
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This dataset was produced as part of the **Efficient Image Generation** project at ENSTA Paris.
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Full methodology, training experiments, and inference benchmarks are documented in the [project report](https://drive.google.com/file/d/1ay4-cBOSt4LbLhwgQ0gBykda1Bu0HUXY/view?usp=drive_link).
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---
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## License
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Released under the **MIT License** — free to use, modify, and distribute without restriction. Note that the AnyWord-3M source dataset and BLIP-2 model are subject to their own respective licenses on HuggingFace.
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