how to modulate two images in which one is color image and other is matlab generated object?

i want to modulate color fringe pattern(i) with matlab generated peak object(Q), i have a code % object

m = 256;
n = 256; 
[x,y,z] = peaks; 
z = imresize(z,[m,n]); 
Q = exp(1i*z*2.5); % Increase the fringes by 2.5 times 
imshow(Q,[])

% color fringe pattern 
f1 = 20; % No. of vertical fringes 
f2 = 0; % No. of horizontal fringes 
a1 = zeros(m,n); 
a2 = zeros(m,n); 
a3 = zeros(m,n); 
for i = 1:m 
    for j = 1:n 
        a1(i,j) = exp(1i*(2*pi*(f1*j/n+f2*i/m)-2*pi/3));
        a2(i,j) = exp(1i*(2*pi*(f1*j/n+f2*i/m))); 
        a3(i,j) = exp(1i*(2*pi*(f1*j/n+f2*i/m)+2*pi/3)); 
    end
end
Color = zeros(m,n,3); 
Color(:,:,1) = a1; 
Color(:,:,2) = a2; 
Color(:,:,3) = a3; 

% imshow(Color,[]),impixelinfo; 
% imwrite(Color,'myimage.jpg'); 
% i = imread('myimage.jpg');

so how to modulate i with Q ?

Answer 1

[Hitesh]

Hi ajeet,

To modulate the color fringe pattern "Color" with the MATLAB generated object "Q", you need to perform element-wise multiplication between the two arrays. This will apply the modulation pattern "Q" to each channel of the color image. Kindly refer to the following code:

% Modulate each channel of the color image with Q
ModulatedColor = zeros(m, n, 3);
ModulatedColor(:,:,1) = Color(:,:,1) .* Q;
ModulatedColor(:,:,2) = Color(:,:,2) .* Q;
ModulatedColor(:,:,3) = Color(:,:,3) .* Q;

% Display the modulated color image
imshow(ModulatedColor, []);
impixelinfo;

• Element-wise Multiplication: The operation Color(:,:,k) .* Q is performed for each color channel k. This multiplies each element of the color channel by the corresponding element in "Q".
• Complex Numbers: Since "Q" and "Color" are complex arrays, the multiplication will affect both the magnitude and phase of the original color image.