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README.md
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- `Simple Table`
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- `Visual - Essential`
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- `Visual - Supportive`
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- `Visual - Essential`
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---
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license: apache-2.0
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pipeline_tag: image-classification
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tags:
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- image-classification
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- multi-label-classification
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- onnx
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- openvino
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- pdf
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- document-understanding
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- rag
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datasets:
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- Wikit/PdfVisClassif
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---
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# PDF Page Classifier
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Multi-label classifier for PDF page images. Determines whether a PDF page
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requires image embedding (vs. text-only) in RAG pipelines.
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Backbone: EfficientNet-Lite0. Exported to ONNX and OpenVINO INT8 via
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Quantization-Aware Training (QAT). **No PyTorch required at inference time.**
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## Classes
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- `Complex Table`
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- `Simple Table`
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- `Visual - Essential`
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- `Visual - Supportive`
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Pages matching any of the following classes should trigger image embedding:
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- `Complex Table`
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- `Visual - Essential`
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Default threshold: `0.5`
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## Usage
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### With [chunknorris](https://github.com/wikit-ai/chunknorris) (recommended)
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```bash
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pip install "chunknorris[ml-onnx]" # ONNX backend
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pip install "chunknorris[ml-openvino]" # OpenVINO INT8, fastest on CPU
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```
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```python
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from chunknorris.ml import load_classifier
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clf = load_classifier("Wikit/pdf-pages-classifier") # auto-selects best available backend
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result = clf.predict("page.png")
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# {"needs_image_embedding": True, "predicted_classes": [...], "probabilities": {...}}
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```
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### Standalone (no chunknorris)
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```bash
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git clone https://huggingface.co/Wikit/pdf-pages-classifier
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cd pdf-pages-classifier
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pip install onnxruntime Pillow numpy # or: openvino Pillow numpy
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```
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```python
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from classifiers import load_classifier
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clf = load_classifier(".") # auto-selects available backend
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result = clf.predict("page.png")
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```
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## Files
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| File | Format | Notes |
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|------|--------|-------|
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| `model.onnx` | ONNX FP32 | Cross-platform CPU/GPU inference |
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| `openvino_model.xml/.bin` | OpenVINO INT8 | Fastest CPU inference (QAT) |
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| `pytorch_model.bin` | PyTorch | Raw checkpoint; requires `torch` + `timm` |
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| `config.json` | JSON | Preprocessing config and class names |
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| `classifiers/` | Python | Standalone inference scripts (no chunknorris needed) |
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## Dataset
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Trained on [Wikit/PdfVisClassif](https://huggingface.co/datasets/Wikit/PdfVisClassif).
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