Hi, i have a .mat file and i have images in that file. i need to view the each image.

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I have received one file with .mat format and i need to view the images in it. could anyone please help me?
  2 Comments
Mohan Prasath Thirumalaisamy
Edited: Walter Roberson on 29 Jun 2015
Hi Kesavan,
>> load('data.mat')
>> open('data.mat')
ans =
testdata: [1x67 struct]
this is what i am getting and i want to view the images.
The variable name is testdata as far as i understood and even if i give, it shows me error.

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Accepted Answer

Jan
Jan on 28 Dec 2012
The reply "testdata = 1x67 struct array" reveals, that a struct array is replied. So please try:
storedStructure = load(fullMatFileName)
for ii = 1:numel(storedStructure)
figure; % Open a new figure
image(storedStructure(ii).image);
end
  5 Comments
Image Analyst
Image Analyst on 15 Jun 2018
It does not matter. If there is no field of the structure "storedStructure" called "image" then the reference to storedStructure(ii).image will fail.
I suspect you have different code, a different mat file, a different question, and should have asked this in your own discussion thread.
Walter Roberson
Walter Roberson on 15 Jun 2018
image() works under the following circumstances:
  • data is uint8, uint16, uint32, uint64
  • data is int8, int16, int32, int64
  • data is single, double
  • data is logical
  • data is 2D array
  • data is 3D array with length of third dimension is 3
image() does not work under the following circumstances
  • data is char, string, cell array, struct, graphics object
  • data has complex components, even if the components are all 0
image() does not normally work for objects (in the object-oriented sense), but it is not out of the question that the designers of the object might have created an image() method

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More Answers (2)

Image Analyst
Image Analyst on 20 Dec 2012
storedStructure = load(fullMatFileName);
image1 = storedStructure.image1; % or whatever it's called.
image2 = storedStructure.image2; % or whatever it's called.
image3 = storedStructure.image3; % or whatever it's called.
imshow(image1, []);
imshow(image2, []);
imshow(image3, []);
  8 Comments
Shaveta Arora
Shaveta Arora on 29 Jun 2015
Mr. Mohan
Can u pls help me in this, my .mat file contains only one image. how to read that?
Image Analyst
Image Analyst on 29 Jun 2015
Use the load() function. But you saw my answer so I'm not sure why it's not working for you. What went wrong?

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Ricky Moua
Ricky Moua on 14 Jun 2019
I"m getting this error:
>>image1 = storedStructure.image1;
Reference to non-existing field 'image1'
why?
  8 Comments
Image Analyst
Image Analyst on 14 Jun 2019
You need to initialize frame counter somewhere of course. Did you do that? Do that before your loop starts. You might call getsnapshot() instead of getdata().
Ricky Moua
Ricky Moua on 17 Jun 2019
Enclosed is the complete script. I'm getting an error "A timeout occurrred during GETSNAPSHOT".
I want the script to take an image whenever the hardware is being trigged and I only want 5 images for now.

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