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The Edge Impulse Exporter acquisition format, info.labels or bounding_boxes.labels, provides a simple and intuitive way to store files and associated labels.

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Directory structure

Directories containing data in this format will take the following structure: 
.
├── info.labels
└── training
│   ├── info.labels
│   ├── file1.wav
│   ├── file2.wav
│   ├── file3.wav
│   ...
│   └── file100.jpg
└── testing
    ├── info.labels
    ├── file101.wav
    ├── file102.wav
    ...
    └── file120.wav

2 directories, 123 files
The subdirectories contain files in any Edge Impulse-supported format. Each file represents a sample and is associated with its respective labels in the info.labels file. The info.labels file can be located in each subdirectory or at the folder root.

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File structure

The file follows a JSON format, with the following structure:
  • version: Indicates the version of the label format.
  • files: A list of objects, where each object represents a supported file format and its associated labels.
    • path: The file path.
    • name: The sample name (does not have to match the file name).
    • category: Indicates whether the image belongs to the training or testing set.
    • label (optional): Provides information about the labeled objects.
      • type: Specifies the type of label - unlabeled, label, multi-label.
      • label (optional): The actual label or class name of the sample.
      • labels (optional): The labels in the multi-label format:
        • label: Label for the given period.
        • startIndex: Timestamp in milliseconds.
        • endIndex: Timestamp in milliseconds.
    • metadata (Optional): Additional metadata associated with the image, such as the site where it was collected, the timestamp or any useful information.
    • boundingBoxes (Optional): A list of objects, where each object represents a bounding box for an object within the image.
      • label: The label or class name of the object within the bounding box.
      • x, y: The coordinates of the top-left corner of the bounding box.
      • width, height: The width and height of the bounding box.

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File example

{
    "version": 1,
    "files": [
        {
            "path": "testing/sample.3.cbor",
            "name": "sample.3.cbor",
            "category": "testing",
            "label": {
                "type": "label",
                "label": "first_label"
            }
        }
    ]
}