easyidp.pix4d.read_ccp

easyidp.pix4d.read_ccp(ccp_path)

Read *_calibrated_camera_parameters.txt for easyidp.reconstruct.Photo object

Parameters:

ccp_path (str) – file path

Returns:

img_configs = {
    'w': 4608,
    'h': 3456,
    'Image1.JPG': {
        'cam_matrix':  array([[...]]),
        'rad_distort': array([ 0.03833474, ...]),
        'tan_distort': array([0.00240852, ...]),
        'cam_pos':     array([ 21.54872207, ...]),
        'cam_rot':     array([[ 0.78389904, ...]])},

    'Image2.JPG':
        {...}
    }

Return type:

dict

Notes

It is the camera position info in local coordinate, the file looks like:

fileName imageWidth imageHeight
camera matrix K [3x3]
radial distortion [3x1]
tangential distortion [2x1]
camera position t [3x1]
camera rotation R [3x3]
camera model m = K [R|-Rt] X

DJI_0954.JPG 4608 3456
3952.81247514184087776812 0 2233.46124792750424603582
0 3952.81247514184087776812 1667.92521335858214115433
0 0 1
0.03833474118270804865 -0.01750917966495743258 0.02049798716391852335
0.00240851666319534747 0.00292562392135245920
21.54872206687879199194 -29.58734160676452162875 30.        85702810138878149360
0.78389904231994589345 -0.62058396220897726892 -0.      01943803742353054573
-0.62086105345046738169 -0.78318706257080084043 -0.     03390541741516269608
0.00581753884797473961 0.03864674463298682638 -0.99923600083815289352

DJI_0955.JPG ...

Example

Data prepare

>>> import numpy as np
>>> np.set_printoptions(suppress=True)

>>> import easyidp as idp
>>> test_data = idp.data.TestData()

>>> param_folder = str(test_data.pix4d.maize_folder / "1_initial" / "params")
>>> param = idp.pix4d.parse_p4d_param_folder(param_folder)

Then use this function:

>>> ccp = idp.pix4d.read_ccp(param['ccp'])
>>> ccp.keys()
dict_keys(['DJI_0954.JPG', 'w', 'h', 'DJI_0955.JPG', ... , 'DJI_0091.JPG', 'DJI_0092.JPG'])

>>> ccp['w']
4608

>>> ccp['DJI_0954.JPG']
{
    'cam_matrix':
        array([[3952.81247514,    0.        , 2233.46124793],
               [   0.        , 3952.81247514, 1667.92521336],
               [   0.        ,    0.        ,    1.        ]]),

    'rad_distort':
        array([ 0.03833474, -0.01750918,  0.02049799]),

    'tan_distort':
        array([0.00240852, 0.00292562]),

    'cam_pos':
        array([ 21.54872207, -29.58734161,  30.8570281 ]),

    'cam_rot':
        array([[ 0.78389904, -0.62058396, -0.01943804],
               [-0.62086105, -0.78318706, -0.03390542],
               [ 0.00581754,  0.03864674, -0.999236  ]])
}