8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 1/18

 

I have used the Gaussian filter with increasing values of sigma(standard deviation) on the first fringe

 pattern as given in the following figures :-

Fig.1  –  Original image Fig.2  –  Gaussian filtering ( ) Fig.3 - Gaussian filtering ( )

Fig.4  –  Gaussian filtering ( ) Fig.5 –  Gaussian filtering ( ) Fig.6 –  Gaussian filtering ( )

Fig.7 –  Gaussian filtering ( ) Fig.8 –  Gaussian filtering ( ) Fig.9 –  Gaussian filtering ( )

I had tried median filtering over the Gaussian filtered images but that led to clarifying the images

again and for some values of sigma the fringe pattern completely lost its individuality.

Fig.10 - image obtained after applying median filtering.

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 2/18

 

Whereas the phase maps were found out to be poorer in image quality as compared to the ones

obtained without applying filtering, (I have used the images for sigma=1).

Fig.11  –  Phase map of pattern 1

Fig.12  –  3D plot of the phase map

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 3/18

 

Fig.13  –  Colour 3D plot of the phase map.

FRINGE PATTERN –  2

Fig.14  –  Original image Fig.15 - Gaussian filtering ( )

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 4/18

 

Fig.16 – 

 Phase map.

Fig.17 - 3D plot of the phase map

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 5/18

 

Fig.18  –  Colour 3D plot of the phase map.

FRINGE PATTERN - 3

Fig.19  –  Original image Fig.20 - Gaussian filtering ( )

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 6/18

 

Fig.21 –  Phase map.

Fig.22 - 3D plot of the phase map

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 7/18

 

Fig.23  –  Colour 3D plot of the phase map.

FRINGE PATTERN - 4

Fig.24  –  Original image Fig.25 - Gaussian filtering ( )

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 8/18

 

Fig.26 –  Phase map.

Fig.27 - 3D plot of the phase map

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 9/18

 

Fig.28 – 

 Colour 3D plot of the phase map.

FRINGE PATTERN - 7

Fig.29  –  Original image Fig.30 - Gaussian filtering ( )

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 10/18

 

Fig.31 –  Phase map.

Fig.32 - 3D plot of the phase map

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 11/18

 

Fig.33  –  Colour 3D plot of the phase map.

FRINGE PATTERN - 8

Fig.34  –  Original image Fig.35 - Gaussian filtering ( )

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 12/18

 

Fig.36 –  Phase map.

Fig.37 - 3D plot of the phase map

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 13/18

 

Fig.38  –  Colour 3D plot of the phase map.

FRINGE PATTERN - 9

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 14/18

 

Fig.39  –  Original image Fig.40 - Gaussian filtering ( )

Fig.41 –  Phase map.

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 15/18

 

Fig.42 - 3D plot of the phase map

Fig.43 – 

 Colour 3D plot of the phase map.

A COMPARISON OF THE PHASE  –  MAPS WITH

AND WITHOUT FILTER

Fringe Pattern –  1

Fig.44  –   Phase map without filter Fig.45  –   Phase map with filter

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 16/18

 

Fringe Pattern –  2

Fig.46  –   Phase map without filter Fig.47  –   Phase map with filter

Fringe Pattern –  3

Fig.48  –   Phase map without filter Fig.49  –   Phase map with filter

Fringe Pattern –  4

Fig.50  –   Phase map without filter Fig.51 –   Phase map with filter

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 17/18

 

Fringe Pattern –  7

Fig.52  –   Phase map without filter Fig.53  –   Phase map with filter

Fringe Pattern –  8

Fig.54  –   Phase map without filter Fig.55  –   Phase map with filter

Fringe Pattern –  9

Fig.56  –   Phase map without filter Fig.57  –   Phase map with filter

8/13/2019 Phase Maps With 3D Plots After Gaussian Filtering

http://slidepdf.com/reader/full/phase-maps-with-3d-plots-after-gaussian-filtering 18/18