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README.md
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---
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library_name: transformers.js
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license: gpl-3.0
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---
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library_name: transformers.js
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license: gpl-3.0
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pipeline_tag: object-detection
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---
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https://github.com/WongKinYiu/yolov9 with ONNX weights to be compatible with Transformers.js.
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## Usage (Transformers.js)
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If you haven't already, you can install the [Transformers.js](https://huggingface.co/docs/transformers.js) JavaScript library from [NPM](https://www.npmjs.com/package/@xenova/transformers) using:
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```bash
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npm i @xenova/transformers
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```
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**Example:** Perform object-detection with `Xenova/gelan-c`.
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```js
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import { AutoModel, AutoProcessor, RawImage } from '@xenova/transformers';
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// Load model
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const model = await AutoModel.from_pretrained('Xenova/gelan-c', {
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// quantized: false, // (Optional) Use unquantized version.
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})
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// Load processor
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const processor = await AutoProcessor.from_pretrained('Xenova/gelan-c');
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// processor.feature_extractor.do_resize = false; // (Optional) Disable resizing
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// processor.feature_extractor.size = { width: 128, height: 128 } // (Optional) Update resize value
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// Read image and run processor
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const url = 'https://huggingface.co/datasets/Xenova/transformers.js-docs/resolve/main/city-streets.jpg';
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const image = await RawImage.read(url);
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const { pixel_values } = await processor(image);
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// Run object detection
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const { outputs } = await model({ images: pixel_values })
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const predictions = outputs.tolist();
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for (const [xmin, ymin, xmax, ymax, score, id] of predictions) {
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const bbox = [xmin, ymin, xmax, ymax].map(x => x.toFixed(2)).join(', ')
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console.log(`Found "${model.config.id2label[id]}" at [${bbox}] with score ${score.toFixed(2)}.`)
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}
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// Found "car" at [446.82, 377.56, 639.19, 477.84] with score 0.93.
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// Found "car" at [177.22, 336.87, 399.68, 417.72] with score 0.93.
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// Found "bicycle" at [1.01, 518.22, 110.25, 584.43] with score 0.91.
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// Found "bicycle" at [352.25, 526.08, 463.18, 588.02] with score 0.90.
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// Found "person" at [474.38, 430.36, 533.80, 534.33] with score 0.86.
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// Found "bicycle" at [449.59, 476.04, 555.38, 537.74] with score 0.86.
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// Found "person" at [34.38, 469.56, 79.05, 566.80] with score 0.83.
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// Found "traffic light" at [376.79, 66.41, 401.90, 111.34] with score 0.82.
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// ...
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```
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## Demo
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Test it out [here](https://huggingface.co/spaces/Xenova/yolov9-web)!
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---
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Note: Having a separate repo for ONNX weights is intended to be a temporary solution until WebML gains more traction. If you would like to make your models web-ready, we recommend converting to ONNX using [🤗 Optimum](https://huggingface.co/docs/optimum/index) and structuring your repo like this one (with ONNX weights located in a subfolder named `onnx`).
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