Clarify what the example dbh_algo is in the paper? How to realize the combinations in the paper?

[mavavilj]

Clarify what the example dbh_algo (https://github.com/tiagodc/TreeLS/blob/9033693503ee71ace2335a6b8fa2dce864df37cd/README.md) is in the paper (https://www.sciencedirect.com/science/article/pii/S0168169917301114?via%3Dihub)? How to realize the combinations in the paper?

Best overall performance was obtained by denoising method D1 (Hough transformation) followed by modelling method M2 (IRTLS cylinder fit), as this combination produced the lowest RMSE and bias values, keeping a high stem segment detection rate (Fig. 8).

Is it this?