MATLAB: Why do i receive the error when i try to use this function movingRegisteredDefault to do intensity based image registration method movingRegisteredDefault. What is ‘ VARARGIN’. Where can i get MRI image used for intensity based image registration

digital image processingimageoptimizationsimulation

fixed = imread('webcam image.jpg');
moving = imread('IR image.jpg');
figure, imshowpair(moving, fixed, 'montage')
title('Unregistered')
figure, imshowpair(moving, fixed)
title('Unregistered')
[optimizer,metric] = imregconfig('multimodal');
disp(optimizer)
disp(metric)
  registration.optimizer.OnePlusOneEvolutionary
    Properties:
           GrowthFactor: 1.050000e+00
                Epsilon: 1.500000e-06
          InitialRadius: 6.250000e-03
      MaximumIterations: 100
    registration.metric.MattesMutualInformation
    Properties:
      NumberOfSpatialSamples: 500
       NumberOfHistogramBins: 50
                UseAllPixels: 1
  movingRegisteredDefault = imregister(moving, fixed, 'affine', optimizer, metric);
  Error using imregtform>parseInputs (line 254)
  The value of 'MovingImage' is invalid. All dimensions of the moving image
  should be greater than 4.
Error in imregtform (line 123)
parsedInputs = parseInputs(varargin{:});
Error in imregister (line 118)
tform = imregtform(varargin{:});

Best Answer

When you did
moving = imread('IR image.jpg');
somehow moving ended up with fewer than 4 rows or fewer than 4 columns. You should check with size(moving)
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