Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved method for phase wraps reduction in profilometry   In order to completely eliminate, or greatly reduce the number of phase wraps
in 2D wrapped phase map, Gdeisat et al. proposed an algorithm, which uses
shifting the spectrum towards the origin. But the spectrum can be shifted only
by an integer number, meaning that the phase wraps reduction is often not
optimal. In addition, Gdeisat's method will take much time to make the Fourier
transform, inverse Fourier transform, select and shift the spectral components.
In view of the above problems, we proposed an improved method for phase wraps
elimination or reduction. First, the wrapped phase map is padded with zeros,
the carrier frequency of the projected fringe is determined by high resolution,
which can be used as the moving distance of the spectrum. And then realize
frequency shift in spatial domain. So it not only can enable the spectrum to be
shifted by a rational number when the carrier frequency is not an integer
number, but also reduce the execution time. Finally, the experimental results
demonstrated that the proposed method is feasible.

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The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int