Speckle correlation method used to detect an object's surface slope

Simulation Analysis of Speckle Pattern Displacements A _{X 1} and A _{X 2} Evaluated for Different Angles α of the Slope of an Object's Surface and Geometrical Parameters

^a  L _c = 106 mm, $L_p\prime$ = 305 mm, L _s = 370 mm, f′ = 19.96 mm, θ _o = 44°.
^b  L _c = 105 mm, $L_p\prime$ = 700 mm, L _s = 466 mm, f′ = 15 mm, θ _o = 44°.

Results of the Measurement of the Slope of an Object's Surface by Means of the Speckle Correlation Method

Table 1

Simulation Analysis of Speckle Pattern Displacements A _{X 1} and A _{X 2} Evaluated for Different Angles α of the Slope of an Object's Surface and Geometrical Parameters

^a  L _c = 106 mm, $L_p\prime$ = 305 mm, L _s = 370 mm, f′ = 19.96 mm, θ _o = 44°.
^b  L _c = 105 mm, $L_p\prime$ = 700 mm, L _s = 466 mm, f′ = 15 mm, θ _o = 44°.

Table 2

Results of the Measurement of the Slope of an Object's Surface by Means of the Speckle Correlation Method