rpcfit
rpcfit is a python module corresponding to the IGARSS 2021 paper submission
Robust Rational Polynomial Camera Modelling for SAR and Pushbroom Imaging
Preprint available at arxiv
To install requirements :
pip install -r requirements.txt
To test the installation: python usage.py
The package contains:
-
gridata.py: Has the necessary functions to construct the 3D+2D point grid correspondence (CoNtrol Point & ChecK Point). Needs a projection function or a localization function from a physical sensor model. A physical sensor model for the Sentinel-1 satellite may be made available in the future. Otherwise, consider using snappy for Sentinel-1. -
Lcurve.py: Has the necessary function to do the Lcurve criterion with the standard Tikhonov, or with a set of discrete points by using the spline curve interpolation. -
rpc_fit: Has the necessary functions to fit the rpc on the constructed grids. usecalibrate_rpc. Other functions are internal helper funcs.
The data folder contains datasets for the test in usage.py:
- 2d refers to image coordinates x, y
- 3d refers to lon, lat, height coordinates
- train refers to the training set
- test refers to the test set