how do I use Alphadata commands for image on GUIDE

Question

vidya 2014-12-15

0
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https://ww2.mathworks.cn/matlabcentral/answers/166727-how-do-i-use-alphadata-commands-for-image-on-guide

评论： Image Analyst 2014-12-15

Dear Matlab expert group,

I am relatively new to matlab image processing and guide. I am struggling to use alphadata commands for image processing purposes in GUIDE. Please can someone share any information about the same. I have attached the initial figure and matlab file for your information. I was able to select an image and display it on an axes using the following

              [fileinfo pathinfo] = uigetfile('*.*','File Selector');
              image = strcat(pathinfo, fileinfo);
              jpgimage = imread(image);
              axes(handles.axes1);
              x = imshow(jpgimage);

I am failing to add alphadata commands for a pushbutton that can be used to create a layer of alphadata on the existing image. I have put the commands below.

                >> q = zeros(size(jpgimage));
                >> q(:,:,:)=0.6;
                >> PSF = fspecial('disk', 5);
                >> Blurred = imfilter(q, PSF,'circular','conv' );
                >> [r,c,~] = size(jpgimage);
                >> [X Y] = meshgrid(1:r,1:c);
                >> Z = mvnpdf([X(:) Y(:)], [r c]./2, diag(50.*[r c]));
                >> Z = (Z-min(Z(:)))./range(Z(:));
                >> Z = reshape(Z',[c r])';
                >> fh = figure;
                >> imshow(jpgimage,'Border','tight'), hold on
                >> hImg = imshow(q,'Border','tight'); hold on
                >> set(hImg, 'AlphaData',Z);