LIDC resampling, crop/pad and DRR conventions are adapted from
X2CT-GAN's CT2XRAY scripts
by Kai Ma, Copyright (c) Tencent. Their source headers specify GPLv3;
that notice is retained in prepare_lidc.py and common.py, with the license in
LICENSE-GPL-3.0.txt. The upstream repository's separate
license file says LGPLv3 and is preserved verbatim in
LICENSE-UPSTREAM.txt; these are the upstream notices,
not a new license declaration for the RFX2CT model.
The COLONOG body cleaning and centered resampling are ported from this project's dataset preparation. DRR conversion and HDF5 packing reuse the project's existing preparation routines. These are adaptations for RFX2CT, not the missing original X2CT-GAN HDF5 conversion program. Details and commands are in docs/DATA.md.
Please cite the preprocessing reference:
Xingde Ying, Heng Guo, Kai Ma, Jian Wu, Zhengxin Weng, and Yefeng Zheng. X2CT-GAN: Reconstructing CT from Biplanar X-Rays with Generative Adversarial Networks. CVPR, 2019.