offset & code

[shangchengPKU]

Thank you very much for your excellent code, but I would like to ask you a few questions:

1. What is the purpose of introducing offset?
2. In the code file, you have center point, boundary box, mean / standard deviation
   What are the specific functions of GT key point documents?

[zhangboshen]

@shangchengPKU Hi,

1. The idea of predicting offset instead of pixel-wise probability is wide-applied recently (e.g., "Dense 3D Regression for Hand Pose Estimation", "AWR: Adaptive Weighting Regression for 3D Hand Pose Estimation", "Point-to-Point Regression PointNet for 3D Hand Pose Estimation").
   In my opinion, predicting offset makes the output joints more accurate.
2. Sorry I don't understand your question very clearly. We use center point and bndbox to crop the hand/human-centered sub-image, mean/std normalize the original data.

[shangchengPKU]

@zhangboshen
I understand the first question, the second question I read the relevant code, also understand, thank you very much, and I love you this article! Thank you again!

[zhangboshen]

@shangchengPKU
Glad to hear that. And thank you for your kind attention to our work.