[
    {
        "n": 3,
        "w_range": [
            100,
            1000
        ],
        "h_range": [
            100,
            1000
        ],
        "c_range": [
            100,
            1000
        ],
        "use_same_w": true,
        "use_same_h": true
    },
    {
        "n": 5,
        "w_range": [
            50,
            200
        ],
        "h_range": [
            50,
            200
        ],
        "c_range": [
            50,
            200
        ],
        "use_same_w": false,
        "use_same_h": true
    },
    {
        "n": 1,
        "w_range": [
            1,
            10
        ],
        "h_range": [
            1,
            10
        ],
        "c_range": [
            1,
            10
        ],
        "use_same_w": false,
        "use_same_h": false
    }
]