Spatial speckle contrast window [1] method. This consist in test the contrast
of speckles in a window region of an image. The image DATAFRAME is
divided into windows of WLines pixel lines and WColumns pixel columns.
The contrast in a window Cw is calculated as the quotient between spatial
standard deviation (populational) and spatial mean in the window.
All the pixels in the analysed window are filled with the contrast value.
Cw=(Spatial Deviation)/(Spatial Mean)
[1] Cardoso, R.R. ; Braga, R.A. ; Rabal, H.J. Alternative protocols on
dynamic speckle laser analysis. SPIE 8413, V International Conference
on Speckle Metrology. 2012
After starting the main routine just type the following command at the
prompt:
[C,mC] = sscont(DATAFRAME,WLines,WColumns);
% Analysis window of 6x5 pixels.
[C,mC] = sscont(DATAFRAME,6,5);
Input:
DATAFRAME is the image under analysis.
WLines is the number of lines in the analysed window.
WColumns is the number of columns in the analysed window.
Output:
C is the spatial speckle contrast window image.
mC is the mean value of the contrast in all windows.
For help, bug reports and feature suggestions, please visit:
http://www.nongnu.org/bsltl
Package: bsltl
