How to insert picture 1 into picture 2?

I want to use matrix insertion method to insert an image taken by a webcam (640x480) into another image with a larger resolution, how should I do that?

Answer 1

[Vilém Frynta]

Example:

% Using random pictures that are part of Matlab
img1 = imread("peacock.jpg");      % Smaller picture (792 x 1056)
img2 = imread("flamingos.jpg");    % Larger picture (972 x 1296)
img1_Resolution = size(img1)

We know picture sizes. Now you need to choose where you want to insert the picture and use indexing to overwrite part of the img2 by img1.

I have chosen to insert to position 51–842 on X axis and 123–1279 on Y axis.

imgNew = img2;  % Saving larger picture into new variable

% X_position defines where you insert new picture on X axis
X_position = 51:50+img1_Resolution(1);
% Y_position defines where you insert new picture on Y axis
Y_position = 123:122+img1_Resolution(2);

% Inserting smaller picture into the larger one on defined positions
imgNew(X_position, Y_position,:) = img1;

subplot(2,2,1)
imshow(img1)
subplot(2,2,2)
imshow(img2)
subplot(2,2,[3 4])
imshow(imgNew)

Hope this helps. I will edit this to be more understandable, just wanted to post this to save my answer progress.

Edit: aesthethics

[Minh]

I want to take a picture with a webcam and then insert a frame, how do I do that? 😖

[Vilém Frynta]

What kind of frame?

[Minh]

ex: I want to insert a picture taken by webcam in this frame

[Minh]

I don't understand the X and Y axes well, could you please be more specific?

[Vilém Frynta]

X position on your frame corresponds to horizontal length of the green area on your picture Y position corresponds to vertical length of the green area

with these 2 things, you are telling Matlab where you want to insert the picture.

I recommend you to educate yourself on “Image Processing Toolbox”, prefferably in your best language, to understand better.

[Minh]

thank you very much, i will learn more 💗

Answer 2

[Image Analyst]

See attached demos. Maybe one of them will be helpful.