Repository of the 3DI method is currently maintained at the link below:
[https://github.com/Computational-Psychiatry/3DI]

Project page: https://computational-psychiatry.github.io/3DI/

If you use this code, please cite the work as below:
```
@ARTICLE {sariyanidi2024,
author = {E. Sariyanidi and C. J. Zampella and R. T. Schultz and B. Tunc},
journal = {IEEE Transactions on Pattern Analysis & Machine Intelligence},
title = {Inequality-Constrained 3D Morphable Face Model Fitting},
year = {2024},
volume = {46},
number = {02},
issn = {1939-3539},
pages = {1305-1318},
doi = {10.1109/TPAMI.2023.3334948},
month = {Feb}
}```