preprocess.json

{
    "stages": [
        {
            "antialias": null,
            "interpolation": "bilinear",
            "max_size": null,
            "size": [
                448,
                448
            ],
            "type": "resize"
        },
        {
            "type": "to_tensor"
        },
        {
            "mean": [
                0.5,
                0.5,
                0.5
            ],
            "std": [
                0.5,
                0.5,
                0.5
            ],
            "type": "normalize"
        }
    ]
}