Evaluation method about TSS dataset

[lixiaolusunshine]

hello, Dr Ignacio Rocco .
In your paper, you use your method on different datasets, and I'm a little confused about TSS datasets. I would like to ask you how PCK on this datasets is computed? In your paper, you describe it is calculated from the points in mask, but I'm still a little confused about the computing method? where are the points from? could you tell me? Thank you very much! I' looking forward your reply.