How can I apply an algo of phase retrieval to an image in a specific axes created in my GUI?

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nick 2017-1-27

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https://ww2.mathworks.cn/matlabcentral/answers/322167-how-can-i-apply-an-algo-of-phase-retrieval-to-an-image-in-a-specific-axes-created-in-my-gui

编辑： nick 2017-2-1

Hi, I have to apply an algo of phase retrieval to an image in a specific axes created in my GUI. I can load the image and aplly a Roi, after this step I wrote the following code in order to read the image with selectode ROI in axes and after to apply the algo. But I am not able to do this.

if true
fullname = fullfile(filepath, filename);% image read in axes1
handles.tifImage = imread(fullname);
imagesc(tifImage); colormap(gray); 
end

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Geoff Hayes 2017-1-31

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nick - where are you calling your algorithm? Why do you read the image and save to the handles structure as

handles.tifImage = imread(fullname);

and then ignore handles on the following line (and so reference a variable that hasn't been defined)

imagesc(tifImage);

nick 2017-2-1

编辑：nick 2017-2-1

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Hi Geoff, I call the algo in a section of my interface that is a popmenu in order to select the desired algo. I read the imahge as reported above because I defined handles in opening function

if true
 % Choose default command line output for interface
handles.output = hObject;
%add our own data fields
handles.File_Name = ['.TIFF'];
handles.Path_Name = ['C:\Users....];
handles.tifImage = ['*.tif'];
end