High speed stereo-vision study of laminated glass fragmentation upon impact

Brightness and contrast corrections for stereocorrelation

“…The analysis of an impact test on laminated glass was used to validate the proposed implementation. The large out-of-plane motions, large stereo-angles of the cameras, and significant brightness and contrast variations make this experiment extremely challenging [27,33]. It was shown that including BCCs in stereocorrelation was extremely beneficial in the present configuration:…”

“…For the analyzed test, this increased performance is thus very rewarding. Following references [27,33], the kinematic field was regularized using an axisymmetric assumption. The reduced spatial basis successfully decreased the condition number of the Hessian matrix.…”

“…For the presented case test, the kinematic field is assumed to be axisymmetric [33]. Consequently, the orthoradial displacement component is null.…”