Hi Saurav,
To blend two images, start by adjusting their transparency using alpha blending to control how see-through each image is. Next, carefully position one image over the other by using indexing to get the placement just right. Finally, combine the images using element-wise operations to create a seamless blend.
Here is the sample code for the same:
% Read the images
img1 = imread('image1.png');
img2 = imread('image2.png');
% Resize images if necessary (optional)
[rows, cols, ~] = size(img1);
img2 = imresize(img2, [rows, cols]);
% Ensure both images are of the same size - I realized this is not needed
% with your images.
% assert(isequal(size(img1), size(img2)), 'Images must be of the same size.');
% Convert images to double precision for blending
img1 = im2double(img1);
img2 = im2double(img2);
% Set transparency level
alpha = 0.5;
% Create an empty canvas for the blended image
blendedImage = img1; % Start with img1 as the base
% Determine the position for the second image over the first
% Example: Place img2 at (rowOffset, colOffset) over img1
rowOffset = 0; % Change this value to move img2 vertically
colOffset = 300; % Change this value to move img2 horizontally
% Ensure the offset does not cause out-of-bound indexing
[rowMax, colMax, ~] = size(img1);
rowRange = rowOffset+1:min(rowOffset+size(img2,1), rowMax);
colRange = colOffset+1:min(colOffset+size(img2,2), colMax);
% Blend the images with the specified transparency
blendedImage(rowRange, colRange, :) = ...
alpha * img2(1:length(rowRange), 1:length(colRange), :) + ...
alpha * img1(rowRange, colRange, :);
% Display the result
imshow(blendedImage);
An alpha value of 0 makes the image fully transparent, while a value of 1 makes it fully opaque. This technique allows for smooth transitions and overlays of images, creating effects such as transparency and fading.
You may read more about alpha blending from there: https://www.mathworks.com/help/matlab/ref/alpha.html
I hope this was helpful!
