Why Y axis and Z axis are switched using showExtrin​sics(stere​oParams, 'CameraCentric')?

showExtrinsics switch Z and Y axis. If I want to plot in the same figure a point A situated at (x,y,z), I have to :

plot3(A(1),A(3),A(2)) %insthead of plot3(A(1),A(2),A(3))

Is it a reason for this?

Answer 1

[Tohru Kikawada]

Yes, you'll need to switch Y and Z axis since the following function in showExtrinsic:

    function [xIdx, yIdx, zIdx] = getAxesIdx()
        % We are going to swap y and z coordinates because the 3-d plot
        % rotates around the MATLAB's z-axis by default. Thus the
        % camera can be displayed horizontally and the 3-d plot will
        % rotate conveniently around the newly defined vertical y-axis.
        xIdx = 1; yIdx = 3; zIdx = 2;
    end