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 = 60. y and y'axes are out of paper Projection angle 0 Light projector b x' axis (0,0,0) Focal length Camera 3-D point (x, y, z) x axis Figure 11.6: Camera-centered triangulation gecometry 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?