A simple point projection structured light system is shown in the figure below. The system has a baseline b=20cm, with a focal length f=3cm and projection angle 0 = 60 . 3-D point (x. y, 2) y and waxes are out of paper Projection angle Light projector (0. 0, 0) .. x axis b Focal length x' axis X' Camera Figure 11.6: Camera-centered triangulation geometry The image coordinates of a spatial point P are (2.0, 2.2) cm. (a). calculate the z coordinate of the 3-D point P; (b). If the image resolution is 0.1mm, what is the depth (i.e. the z value) measurement resolution at point P? (c). How would suggest to achieve a better resolution in the range measurement