{
    "train": [
        {
            "filename": "1.jpg",
            "folder": "images",
            "size": {
                "nrows": 256,
                "ncols": 256
            },
            "objects": [
                {
                    "class": "signal",
                    "id": 0,
                    "region": {
                        "xmin": 0,
                        "xmax": 255,
                        "ymin": 0,
                        "ymax": 255
                    }
                }
            ]
        }
    ],
    "validate": [],
    "test": []
}

{
    "train": [
        {
            "filename": "1.jpg",
            "folder": "images",
            "size": {
                "nrows": 256,
                "ncols": 256
            },
            "objects": [
                {
                    "name": "signal",
                    "id": 0,
                    "region": {
                        "xmin": 0,
                        "xmax": 255,
                        "ymin": 0,
                        "ymax": 255
                    }
                }
            ]
        }
    ],
    "validate": [],
    "test": []
}
Revert "name -> class" Using "name" in the json file, since "class" is a keyword in C++ and we hope to keep the same interface.
Revert "name -> class"
Using "name" in the json file, since "class" is a keyword in C++ and
we hope to keep the same interface.

This reverts commit 12e0e28f38e2990567e56a49ee0f0447c6eb3393.
