MATLAB: How to re size a too big image into small by keeping original values.

image processingImage Processing ToolboxMATLAB

I have an gray scale image of size uint16. when i try to open this image , i get warning that it is too big. I have tried imresize( ) function to make it small<512*512 uint8> in size. When i plot the original image and re sized image, the intensity gets decreased after re sizing . I want to re size original image without changing in its pixel values. Is there any solution?

Best Answer

Don't worry about it. Don't resize. Just ignore it and continue with your processing. It's just saying that it's scaling the image by shrinking it down to display it on your monitor. Again, ignore it and continue to work with your full sized images.

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MATLAB: How to remove Input Variable Not Used Warning

right click on the function statement line (1) and select the

"Suppress "input argument.... " On this line.

i.e. you will get this:

 function SaveCurveFit(option, fitresult, gof) %#ok<INUSD>

MATLAB: Image Resizing before loading

That's not an error. It's not even really a warning - I consider it more of a notification. Just ignore it. If you want to suppress that warning, run this function:

% http://www.mathworks.com/help/matlab/matlab_prog/suppress-warnings.html
function TurnOffWarnings
  try
    % To set the warning state, you must first know the message identifier for the one warning you want to enable. 
    % Query the last warning to acquire the identifier.  For example: 
    % warnStruct = warning('query', 'last')
    % messageID = warnStruct.identifier
    % messageID =
    %    MATLAB:concatenation:integerInteraction
    
    % Turn off this warning "Warning: Image is too big to fit on screen; displaying at 33% "
    warning('off', 'Images:initSize:adjustingMag');
    
    % Get rid of warning about directory already existing: 
    % "Warning: Directory already exists."
    warning('off', 'MATLAB:MKDIR:DirectoryExists');
    % Turn off note "Warning: Added specified worksheet." that appears in the command window.
    warning('off', 'MATLAB:xlswrite:AddSheet');
    % Get rid of warning about roipolyold being deprecated: 
    % "Warning: Function ROIPOLYOLD will be removed in the future. Use ROIPOLY instead"
    warning('off', 'images:removing:function');
    
    % Get rid of warning about wavread() being deprecated: 

    % "Warning: WAVREAD will be removed in a future release. Use AUDIOREAD instead."
    warning('off', 'MATLAB:audiovideo:wavread:functionToBeRemoved');
    
    % Get rid of warning about wavread() being deprecated: 
    % "Warning: figure JavaFrame property will be obsoleted in a future release. For more information see the JavaFrame resource on the MathWorks web site."
    warning('off', 'MATLAB:HandleGraphics:ObsoletedProperty:JavaFrame');
    
    % Turn off warning about variable names being modified if you use readtable() to read in column headers that have spaces in them.
    % "Warning: Variable names were modified to make them valid MATLAB identifiers."
    warning('off', 'MATLAB:table:ModifiedVarnames');
catch ME
    errorMessage = sprintf('Error in function %s() at line %d.\n\nError Message:\n%s', ...
      ME.stack(1).name, ME.stack(1).line, ME.message);
    fprintf(1, '%s\n', errorMessage);
    uiwait(warndlg(errorMessage));
  end
  return; % from TurnOffWarnings

Best Answer

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MATLAB: Image Resizing before loading

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