easyidp.pix4d.read_cam_ssk

easyidp.pix4d.read_cam_ssk(ssk_path)

Get the camera model name, for easyidp.reconstruct.Sensor object

Parameters:

ssk_path (str) –

Returns:

ssk_info =
{
    "label":                  str
    "type":                   str, e.g. frame / fisheye ...
    "pixel_size":             [h, w]
    "pixel_size_unit":        "mm"
    "image_size_in_pixels":   [h ,w]
    "orientation":            1   # guess 0 -> w, h?
    "photo_center_in_pixels": [h, w]
}

Return type:

dict

Note

SSK file contents:

begin camera_parameters FC550_DJIMFT15mmF1.7ASPH_15.0_4608x3456 (RGB)(1)
    focal_length:                      15.00522620622411729130
    ppac:                              0.02793232590500918308 -0.02181191393910364776
    ppbs:                               0 0
    film_format:                       13.12498944000000200560 17.49998592000000030566
    lens_distortion_flag:              off
    io_required:                       yes
    camera_type:                       frame
    media_type:                        digital
    pixel_size:                        3.79774000000000011568 3.79774000000000011568
    image_size_in_pixels:              3456 4608
    scanline_orientation:              4
    photo_coord_sys_orientation:       1
    photo_coord_sys_origin:            1727.50000000000000000000 2303.50000000000000000000
    focal_length_calibration_flag:     off
    calibrated_focal_length_stddev:    0.03
    ppac_calibration_flag:             off
    calibrated_ppac_stddevs:           0.003   0.003
    self_calibration_enabled_params:   0
    antenna_offsets:                   0   0   0
end camera_parameters

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:

>>> idp.pix4d.read_cam_ssk(param['ssk'])
{
    'label': 'FC550_DJIMFT15mmF1.7ASPH_15.0_4608x3456',
    'type': 'frame',
    'pixel_size': [3.79774, 3.79774],
    'image_size_in_pixels': [3456, 4608],
    'orientation': 1,
    'photo_center_in_pixels': [1727.5, 2303.5]
}