We consider a function estimation method with change point detection using truncated power spline basis and elastic-net-type L1-norm penalty. The penalty controls the jump smoothness depending on value of parameter. In terms proposed estimators, we introduce two computational algorithms for Lagrangian dual problem (coordinate descent algorithm) constrained convex optimization (an algorithm base...

Machine vision based on deep learning is gaining more and applications in structural health monitoring (SHM) due to the rich information that can be achieved images. Bolts are widely used connection of steel structures, their loosening compromise safety structures lead serious accidents. Therefore, this paper proposes a method for automatic detection bolt angle latest key point technology using...