You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ReadImageMask.m
    path of file: ./repos/2D_ALDIC/func_quadtree
    
    the code of the file until where you have to start completion: function [DICpara] = ReadImageMask(DICpara)
%FUNCTION [DICpara] = ReadImageMask(DICpara)
% ----------------------------------------------
%   This script is to generate a binary image mask in the reference image
%  
%   INPUT: DICpara       DIC parameters
%
%   OUTPUT: DICpara      DIC parameters
%
% ----------------------------------------------
% Author: Jin Yang.  
% Contact and support: jyang526@wisc.edu -or- aldicdvc@gmail.com
% Last time updated: 12/2020.
% ==============================================
 

    
function [DICpara] = ReadImageMask(DICpara)
%FUNCTION [DICpara] = ReadImageMask(DICpara)
% ----------------------------------------------
%   This script is to generate a binary image mask in the reference image
%  
%   INPUT: DICpara       DIC parameters
%
%   OUTPUT: DICpara      DIC parameters
%
% ----------------------------------------------
% Author: Jin Yang.  
% Contact and support: jyang526@wisc.edu -or- aldicdvc@gmail.com
% Last time updated: 12/2020.
% ==============================================
 
 
%%
% ====== Generate an image mask for the reference image ======
disp('--- Please load a reference frame to generate an image binary mask ---')
file_name_ImgMask{1,1} = uigetfile('*.tif','Select the reference frame to generate an image mask');
        
ImgRef = (imread(file_name_ImgMask{1,1})); 
try ImgRef = rgb2gray(ImgRef(:,:,1:3)); catch; end