Determination of height profile from a two-dimensional fringe signal using a   two-dimensional continuous wavelet transform

Özlem Kocahan YILMAZ

Makale detayları

Determination of height profile from a two-dimensional fringe signal using a two-dimensional continuous wavelet transform

Yazarlar:

Özlem Kocahan YILMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2017 Vol.41 Issue 1, pp.81-89

Belge Tipi:

Makale

Yayın Tarihi:

1/2017

Belge Dili:

Türkçe

Document ID (Org No.):

2000759735

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Özet:

 

The main objective of this study was 3-dimensional (3D)   profile measurements with standard fringe projection, consisting of a CCD   and a projector. For obtaining height information of objects pixel by pixel,   phases have to be calculated from the images taken by the fringe projection   technique. In this study, the 2-dimensional continuous wavelet transform (2D   CWT) phase method was used for phase extraction. 1D and 2D CWT analyses of   noisy images were compared in simulations performed for a 2-dimensional   fringe signal by introducing the carrier frequencies in two spatial   directions, xxx  and yyy. Profile measurement of an object was made experimentally   by cross optical axis geometry. Images, using fringes with two carrier   frequencies, taken from this setup were analyzed with 2D CWT and 3D profiles   of objects were obtained. Numerical simulations and actual experiments were   carried out to show the validity of this technique for finding phase   distributions from noisy images.

Makale detayları

Determination of height profile from a two-dimensional fringe signal using a two-dimensional continuous wavelet transform

Yazarlar: Özlem Kocahan YILMAZ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2017 Vol.41 Issue 1, pp.81-89

Belge Tipi: Makale

Yayın Tarihi: 1/2017

Belge Dili: Türkçe

Document ID (Org No.): 2000759735

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Sayı

Yazarlar:

Özlem Kocahan YILMAZ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2017 Vol.41 Issue 1, pp.81-89

Belge Tipi:

Makale

Yayın Tarihi:

1/2017

Belge Dili:

Türkçe

Document ID (Org No.):

2000759735

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101