Matrix dimensions must agree.

I keep getting the error message : Matrix dimensions must agree. from the code "A = abs(imgA).*exp(1*(1i*rando*pi)); " May i know what is the solution for this?

%% Mesh

close all

n=145; % Number of pixels on one axis

rmax=1; % Normalized radius

X=2*rmax*(-n/2+0.5:1:n/2-0.5)/n; % range for grid (from R=0 to R=1)

Y=2*rmax*(-n/2+0.5:1:n/2-0.5)/n; % range for grid (from R=0 to R=1)

[xm,ym]=meshgrid(X,Y); % x-y coordinates for range of grid

R= sqrt(xm.^2 + ym.^2); % Normalized radius vector

rando=randn(145,145); % random phase initialization

imgA = imread('void.jpg');

imgB = imread('void2.jpg');

%Convert source image to Grayscale

imgA = rgb2gray(imgA);

imgB = rgb2gray(imgB);

figure; imshow(imgA); title('Grayscale ImageA');

figure; imshow(imgB); title('Grayscale ImageB');

%Get the size of the source image

[rowsSource, colsSource, numberOfColorChannelsSource] = size(imgA);

%Get the size of image B

[rowsTarget, colsTarget, numberOfColorChannelsTarget] = size(imgB);

%Check if lateral sizes match

if rowsimgB ~= rowsimgA || colsimgA ~= colsimgB

imgB = imresize(imgB, [rowsimgA colsimgA]);

end

%Convert images to double

imgA = im2double(imgA);

imgB = im2double(imgB);

%% Source plane to target plane

A = abs(imgA).*exp(1*(1i*rando*pi)); % source amplitude (captured on camera) with random source phase = reconstructed source mode

A=A./max(max(A));

Answer 1

[madhan ravi]

 rando = randn(size(imgA));            % random phase initialization, put this line after imgA = ...

size(imgA) should be be equal to size(rando) to be compatible with matrix or array vs matrix multiplication

[Soong Wei Kang]

Hi sir, where should i insert this code? after imgA = im2double(imgA); or imgA = imread('void.jpg'); or imgA = rgb2gray(imgA); ?

[madhan ravi]

After:

 imgA = im2double(imgA);

[Soong Wei Kang]

Hi sir, I have received another error as shown in the attach file.

[madhan ravi]

 rando = randn(size(imgA));            %               ^ missed it by mistake