Space coordinates are 90° rotated in Choreography files
Space coordinates in Choreography (spine/outline) and Choreography-derived (trx.mat) files are height-first. The first space coordinate relates to the height of the camera field of view.
Both coordinates, if divided by the camera pixel size, can be converted to indices in the corresponding original frame. x=0
corresponds to the top of the field of view.
As a consequence, such data should be rotated counterclockwise by 90° with center (0,0)
(the actual top-left corner of the field of view).