Utilities¶

generate.utilities.interpolate_gps_positions_for_cams(log_file, msl_float, cam_filepath, pscan_cam_xyz_file=None, ecosynther_xyz_file=None)¶

This script interpolates the GPS position from a GPS list onto the camera list

Parameters:	log_file (file) – msl_float (float) – cam_filepath (string) – Assumes .JPG extensions are capitalized for all photos pscan_cam_xyz_file (file) – (Optional) Photoscan output file with header and JPG names ecosynther_xyz_file (file) – (Optional) Ecosynther output file with just xyz dimensions

Notes

This function assumes that the GPS_file.txt and list of pictures

are in the same order: i.e., that the first GPS point in the

GPS list corresponds to the first GPS flight of the main flight,

the last point is the last of the flight, and similarly that the

first photo (based on an alphabetical A-Z sort) is the first photo

in the main flight and the last is the last.

Example

>>> log_file = open(log_filepath, ‘r’)

>>> msl_float = 5.6

>>> cam_filepath = ‘/path/to/cams’

>>> cam_xyz_file = open(cam_xyz_filepath, ‘w’)

>>> generate.utilities.interpolate_gps_positions_for_cams(

log_file, msl_float, cam_filepath, pscan_cam_xyz_file=cam_xyz_file)

>>> cam_xyz_file.close()

Example pscan_cam_xyz_file Output

# <label> <x> <y> <z>

a.JPG 364754.663290 4305831.506730 136.543925

...

Example ecosynther_xyz_file Output (no header)

364754.663290 4305831.506730 136.543925

...