code matlab n'est pas clair

salut
voici ce code ci dessous écrit en matlab, svp expliquez moi ce code

Code:

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function See_s_Callback(hObject, eventdata, handles)
global Han_im contrast Mat_info
MatImage = get(Han_im, 'UserData');
 
imRGB(:,:,3)=MatImage;
imRGB(:,:,2)=MatImage;
imRGB(:,:,1)=MatImage;
 
imRGB=min(imRGB/256,1);
imHSV=rgb2hsv(imRGB);
 
[MatSed, MatCert] = recupSedCert(Mat_info);
 
saturation=ones(size(MatImage))./MatCert;
imHSV(:,:,2)=saturation;
color=MatSed./10;
imHSV(:,:,1)=color;
imRGBcoul=hsv2rgb(imHSV);
figure
imagesc(min(1,contrast*imRGBcoul))