Parameters.m

function [Mconversion,Const,Lx,Lz,val_up,val_down,nx_pixel,ny_pixel,overlap_x,overlap_y]=Parameters(varargin)
% PARAMETERS_FILE


M=0.0123;              % From the calibration body: pixel/cm

%(see the numbers in the BOS sketch)
B=0*(1/M);             % Distance section 5-6  
W=20*(1/M);            % Distance section 3-4
L=110*(1/M);           % Distance section 1-2
t=0.5*(1/M);           % thickness of the glass
ZD=(L+2*t+W+B)*(1/M);   

% Set the indexes of refraction
n_air=1;                
n_water=1.332;
n_glass=1.43;

% Computing the constant 
Const_inv=2*(((L^2+B^2)/(n_air)) + (t^2/n_glass) + ((W)/(n_water)));
Const=(Const_inv)^-1;

% Dirichlet's conditions at the top and bottom
val_up=1.332;    
val_down=1.433;  % 

% size of the images
Lx=1720; % IN PIXEL 
Lz=2304;

Mconversion=M; 

% PIV-parameters
nx_pixel = 64;
ny_pixel = 64;
overlap_x=0.5;
overlap_y=0.5;