{
    "cam_num":4,
    "screen_square_size": 12.34,  
    "screen_chessboard_size": [10, 6],
    "screen_square_spacing":0,
    "world_chessboard_size": [8, 8],
    "world_square_size": 12,
    "world_square_spacing":0,
    "d": -5.18,
    "d_ao":-2.31,
    "d_tu":-2.31,
    "d_mirror":0.18,
    "d_pingjing":12.96,
    "num_freq": 3,
    "screenPixelSize": [1600, 1200],
    "screenorigin_point_python": [0, 0], 
    "screenorigin_point": [379, 298],
    "screenorigin_point_matlab": [1220, 900], 
    "Axis_conversion": [[-1, -1],[-1, -1],[-1, -1],[-1, -1]],
    "k": 32.0,
    "pixelSize_mm-old": 0.253125,
    "pixelSize_mm": 0.253125,
    "grid_spacing": 1,
    "cam_params": "cam_params_4.pkl",
    "screen_params":"screen_params_1216_4_1.pkl"
}