Active contour algorithm: An attractive tool for snow avalanche analysis

The creation of geometric three-dimensional models of the inner ear based on micro computer tomography data

“…For such cases, active contours, also called snakes, have been developed in 1988 (Kass et al, 1988). They have a broad use (Wong et al, 1998;Ji and Yan, 2002;Ladret et al, 1999), including application in biological imaging (Kang, 1999;Valverde et al, 2004). The snake algorithm reconstructs the lost (invisible) part of object boundaries, so that the reconstructed images can be used as an input for the 3-D modeling software.…”

Modeling of MIG/MAG welding with experimental validation using an active contour algorithm applied on high speed movies

“…Nevertheless the short-circuit period seems too short when compared with the experiments. The analysis of the state equations (22)- (26) indicates that the short-circuit duration is mainly influenced by the current dynamic and the metal flow velocity (21). Recalling that, in fact, the current is controlled during the short-circuit time, so (19) can be modified (through L S for example) to adjust the simulated current dynamic to experimental data.…”

“…In order to minimize E snake , we determine the list of n points constituting C. To achieve this goal we have chosen to implement the greedy algorithm [20][21][22]. In this approach the derivatives in (32) have to be approximated by finite differences.…”