Simple ONNX inference server for images and videos

For now, only YOLO compatible models are expected to work. To run the server, put your YOLO converted model into assets directory as best1.onnx.

To start the server run cargo run --release --bin server -- --model-version 1. By default, port 3000 will be used.

On Windows it may be necessary to download ffmpeg and set a new environment variable: FFMPEG_DIR=D:\ffmpeg-6.0-full_build-shared

For Linux check out the Dockerfile for required dependencies.

API

Make a GET request to /infer endpoint with a URL to the image, for example: http://localhost:3000/infer?url=https://raw.githubusercontent.com/ultralytics/yolov5/master/data/images/bus.jpg

The response should be similar to this:

{
  "boxes": [
    {
      "frame": 0,
      "x": 0.27407408,
      "y": 0.38055557,
      "width": 0.14938271,
      "height": 0.41944444,
      "class_id": 0,
      "class_name": "person",
      "confidence": 0.59907085
    },
    {
      "frame": 0,
      "x": 0.82345676,
      "y": 0.37685186,
      "width": 0.17530864,
      "height": 0.44166666,
      "class_id": 0,
      "class_name": "person",
      "confidence": 0.7044057
    },
    {
      "frame": 0,
      "x": 0.0,
      "y": 0.51111114,
      "width": 0.096296296,
      "height": 0.29722223,
      "class_id": 0,
      "class_name": "person",
      "confidence": 0.7286054
    },
    {
      "frame": 0,
      "x": 0.016049383,
      "y": 0.21666667,
      "width": 0.95679015,
      "height": 0.4648148,
      "class_id": 5,
      "class_name": "bus",
      "confidence": 0.60946923
    },
    {
      "frame": 0,
      "x": 0.062962964,
      "y": 0.37037036,
      "width": 0.24197531,
      "height": 0.46666667,
      "class_id": 0,
      "class_name": "person",
      "confidence": 0.679659
    }
  ],
  "model_version": 1,
  "error": null
}

There is also a /draw endpoint that will return the original image with drawn additional boxes that represent detected objects: http://localhost:3000/draw?labels=true&url=https://raw.githubusercontent.com/ultralytics/yolov5/master/data/images/bus.jpg