Regarding yaw pitch roll calulation

[Asit1985]

To calculate yaw ,pitch and roll correctly from your 3X3 flattened matrix i need following details

There are a lot of choices we need to make in mathematics, for example,

Left or right handed coordinate systems.
Vector shown as row or column.
Matrix order.
Direction of x,y and z coordinates.
Euler angle order
Direction of positive angles
Choice of basis for bivectors
Etc. etc.

Please provide above details

[olga.kuzminykh]

Hi Asit,

Columns of a 3x3 matrix include the coordinates of basis vectors in the global coordinate system of a camera.

Please refer to this post: Local Joint Coordinate & Rotation Matrix problem

Local Joint Coordinate & Rotation Matrix problem

In the coordinate system of a depth camera, local X would have coordinates (orient.matrix[0], orient.matrix[3], orient.matrix[6]) , local Y would have coordinates (orient.matrix[1], orient.matrix[4], orient.matrix[7]) , and local Z would have coordinates (orient.matrix[2], orient.matrix[5], orient.matrix[8]) .

As for the question about the T-Pose, please take a look at this video (red vector is X, green is Y, blue is Z): https://www.dropbox.com/s/3boo4tr2a1e7umw/Nuitrack_Joint_Orientation.mp4?dl=0

[Roger]

Hi,Asit

Have you calculated yaw,pitch and roll from 3*3 matrix? could you show me some details? Look forward to your reply.

Best wishes,
Rogers