Joint Inversion Through A Level Set Formulation

Modeling of Solder Joint Defects through a Level-set Approach

Due to the inherent nature of flip-chip assembly, the solder joints lie beneath the device and therefore are not amenable to visual inspection. Hence, it is important at the design stage to ensure that solder defects such as joint separation or joint shortening do not occur in the assembly. As a first step, the solder joint is modeled using a level-set approach. Unlike conventional fronttrackin...

Hierarchical Bayesian level set inversion

A level set formulation for Willmore flow

A level set formulation of Willmore flow is derived using the gradient flow perspective. Starting from single embedded surfaces and the corresponding gradient flow, the metric is generalized to sets of level set surfaces using the identification of normal velocities and variations of the level set function in time via the level set equation. The approach in particular allows to identify the nat...

A Geometric Level-set Formulation of a Plasma-sheath Interface

In this paper, we present a new geometric level-set formulation of a plasmasheath interface arising in the plasma physics. We formally derive the explicit dynamics of the interface from the Euler-Poisson equations and study the local-time evolution of the interface and sheath in some special cases.

Dynamic Cone-Beam Reconstruction Using a Variational Level Set Formulation

Tomographic reconstruction from cone-beam X-ray data is only solved for static objects, e. g. the abdomen. In cardiac imaging, a rotational angiography sequence takes approx. 5 s and therefore spans several heart beats. Since such an acquisition scheme forces a trade-off between consistency of the scene and reasonable angular spacings between camera positions, standard reconstruction techniques...