Vertices and Params for custom dataset

[Dipankar1997161]

Hello @pengsida,

You closed the last issue since you said you cannot share the smpl paramaters or camera poses for h36m. Which I totally understand.

1. Could you tell me the way to get the camera parameters for h36m? Since it is not my dataset, I cannot manually calibrate the intri and extr camera params with a chessboard and then use easy-mocap to receive the yml files (I checked a Chessboard demo on youtube for easymocap)

2. Will I get those for the vertices and params which are the smpl parameters by simply running the demo.md of easymocap? I don't think so. If possible, could you please link the section or the doc file on EasyMocap from where I can generate the vertices and Params.

3. Do I need to train h36m on Easymocap to get the smpl params? Because I did not find a training script there.?

I am really sorry for asking these many questions. I have organized the whole dataset just the major ones are missing.

Thank you in advance.

[pengsida]

1. It provides the camera parameters.
2. Yes.
3. No.

[Dipankar1997161]

Ok, it is clear now. I made the Yml files for the camera parameters of h36m, however, what is the Rotation matrix ( 3 X 1) That is I am not understanding. I added the R(3x3) T(3x1) in extr and then the K and distortion matrix in intri.xml

The intrinsic matrix is usually 3x3, and extrinsic is 4x4 with R|t

But what about the 3x1 R matrix ? Could you clarify that?

Edit: I found that the 3x1 R matrix is the Rodrigues of 3x3 rotation matrix. So I did

rvec = Cv2.Rodrigues(R)[0] I passed the 3x3 Rotation matrix as the input array to it I guess this is correct

Lastly, The translation matrix in the Extrinsic.yml, it is the Original T matrix or again is it the Rodrigues of T matrix?

[pengsida]

The original T matrix.