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: ufpa_run.m
    path of file: ./repos/ufpa-face-detection/ViolaJones_version0b
    
    the code of the file until where you have to start completion: %% Face detection using code from 
%http://www.mathworks.com/matlabcentral/fileexchange/29437-viola-jones-object-detection 
%Note that the function ConvertHaarcasadeXMLOpenCV.m will load a XML
%and create two files: one .m and another .mat, at the same directory
%of the XML file. For example, if haarcascade_frontalface_alt.xml has
%the classifier, inspecting haarcascade_frontalface_alt.m is a good
%way to learn about how this classifier is represented in Matlab. And
%a good reference about the features is:
%http://www.lienhart.de/Prof._Dr._Rainer_Lienhart/Source_Code_files/ICIP2002.pdf 
%(this provides more details about how the Haar features can be calculated)
%Note that the XML version adopted by this software seems different than the
%one used in the latest OpenCV version.

%% 1) Define file names
%XML with new format, obtained from the latest OpenCV:
%fileName = 'C:/ak/Works/2016_opencv/sources/data/haarcascades/haarcascade_frontalface_alt.xml';
%XML with old format, from fileexchange:
fileName = ['Haar
    
function ConvertHaarcasadeXMLOpenCV.m will load a XML
%and create two files: one .m and another .mat, at the same directory
%of the XML file. For example, if haarcascade_frontalface_alt.xml has
%the classifier, inspecting haarcascade_frontalface_alt.m is a good
%way to learn about how this classifier is represented in Matlab. And
%a good reference about the features is:
%http://www.lienhart.de/Prof._Dr._Rainer_Lienhart/Source_Code_files/ICIP2002.pdf 
%(this provides more details about how the Haar features can be calculated)
%Note that the XML version adopted by this software seems different than the
%one used in the latest OpenCV version.

%% 1) Define file names
%XML with new format, obtained from the latest OpenCV:
%fileName = 'C:/ak/Works/2016_opencv/sources/data/haarcascades/haarcascade_frontalface_alt.xml';
%XML with old format, from fileexchange:
fileName = ['HaarCascades', filesep(), 'haarcascade_frontalface_alt.xml'];
imageFileName = ['Images', filesep(), '1.jpg'];
%imageFileName = 'Images\2.jpg';
%imageFileName = 'C:/ak/Works/2016_opencv/build3/bin/Debug/photo.jpg';
%imageFileName = 'C:\ak\Works\2016_opencv\ViolaJones_version0b\Images\1.jpg';

j=find(fileName=='.'); 
if(~isempty(j))
    j=j(end