How do I combine two images of different sizes like a photo frame?

Question

Magesh Anand 2017-8-13

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https://ww2.mathworks.cn/matlabcentral/answers/352583-how-do-i-combine-two-images-of-different-sizes-like-a-photo-frame

评论： Image Analyst 2017-8-14

I have two Images DSLR (My Photo and Photo frame), I need to make a photo frame for that i don't know how to combine both without any pixel loss. Kindly help me

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KSSV 2017-8-13

Why don't you attach your images and give a expected output?

Magesh Anand 2017-8-13

I want the photo inside the frame

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Answer 1

Chad Greene 2017-8-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/352583-how-do-i-combine-two-images-of-different-sizes-like-a-photo-frame#answer_277857

在 MATLAB Online 中打开

Here's a quick and dirty way.

% Load images: 
man = imread('john-cena-3.jpg'); 
frame = imread('Transparent_Easter_Frame.png') ; 
% Make the frame the same size as the man: 
framer = imresize(frame,[size(man,1) size(man,2)]); 
% Find empty region of the frame (where all RGB values are zero):
whiteRegion = sum(framer,3)==0; 
% For context, here's the white region of the frame: 
imagesc(whiteRegion) 
axis off

% Display the picture of the man: 
figure
image(man)
% Overlay the picture of the resized frame: 
hold on
h = image(framer); 
% Make the white region of the frame transparent: 
set(h,'AlphaData',~whiteRegion); 
axis image off

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Image Analyst 2017-8-14

在 MATLAB Online 中打开

I think you could make an RGB image like this:

output = frame; % Initialize;
mask = cat(3, whiteRegion, whiteRegion, whiteRegion);
output(mask) = man(mask); % Replace white with man but only in mask region.
imshow(output);

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