T. Santhanakrishnan et al., SLOPE CHANGE CONTOURING FOR 3D DEEPLY CURVED OBJECTS BY MULTIAPERTURESPECKLE SHEAR INTERFEROMETRY, Optik, 104(1), 1996, pp. 27-31
A method that yields fringe pattern representing the slope changes of
a curved object is presented. It is accomplished by modifying the inpl
ane displacement sensitive configuration of speckle interferometry. A
detailed theory and experimental results are presented.