Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Level set based particle filter driven by optical flow: an application
  to track the salt boundary from X-ray CT time-series   Image-based computational fluid dynamics have long played an important role
in leveraging knowledge and understanding of several physical phenomena. In
particular, probabilistic computational methods have opened the way to
modelling the complex dynamics of systems in purely random turbulent motion. In
the field of structural geology, a better understanding of the deformation and
stress state both within the salt and the surrounding rocks is of great
interest to characterize all kinds of subsurface long-terms energy-storage
systems. The objective of this research is to determine the non-linear
deformation of the salt boundary over time using a parallelized, stochastic
filtering approach from x-ray computed tomography (CT) image time series
depicting the evolution of salt structures triggered by gravity and under
differential loading. This work represents a first step towards bringing
together physical modeling and advanced stochastic image processing methods
where model uncertainty is taken into account.

30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol