Question about face bounding box

[FUHUACANGYUE]

Hello!
In your paper, you said "Specifically, FPN was applied to the bounding boxes returned by the detector of
Yang and Nevatia [48], following expansion of its dimensions by 25%."
And <FACE_X, FACE_y, FACE_WIDTH, FACE_HEIGHT> is the face bounding box information, either obtained manually or by the face detector.
So if i want to change the face image, how can i get bounding boxes , and how to expansion of its dimensions by 25%. I can not find any code from [48], besides can you explain what is the meaning of FACE_X, FACE_y, FACE_WIDTH, FACE_HEIGHT?
Thanks a lot!

[fengju514]

Hi,
If you want to change the face image, you need to get bounding boxes manually or by any off-the-shelf face detector such as [48] or Dlib. The bounding boxes in this stage is tight to the face, and then you can expand each side of the box 25% w.r.t. the box width and box height,

Face_X: the x coordinate of the upper-left point of the box
Face_Y: the x coordinate of the upper-left point of the box
Face_WIDTH and FACE_HEIGHT are the face box's width and height