How To Combine Cropped Image to the Original Image?

Question

WanYu 2020-2-8

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/504332-how-to-combine-cropped-image-to-the-original-image

评论： KSSV 2020-2-10

采纳的回答： KSSV

在 MATLAB Online 中打开

Hi All,

I have cropped out a part from my original image and wish to combine it back to the original image.

A 36 by 36 image is cropped from the original image, A then I wish to combine it back to the exact position as it was cropped earlier.

Code as shown:

square = [55 88 35 35];
A = imread (label);
A = imcrop(A, square);

Anyone could please tell me how...

Thank you.

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Answer 1

KSSV 2020-2-8

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/504332-how-to-combine-cropped-image-to-the-original-image#answer_414464

在 MATLAB Online 中打开

I = imread('cameraman.tif') ;  % read image 
[I1,rect] = imcrop(I) ;    % crop the image 
nx = round(rect(1)) ;   % location 
ny = round(rect(2)) ;   % location 
w = size(I1,2) ;        % width 
h = size(I1,1) ;        % height 
% replace 
I(ny:ny+h-1,nx:nx+w-1,:) = I1+100 ; 

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WanYu 2020-2-8

在 MATLAB Online 中打开

Hi,

Thanks for answering.

However, I do face errors as: Unable to perform assignment because the size of the left side is 108-by-36-by-3 and the size of the right side is 36-by-36-by-3.

My code is shown as below:

square_x = 55;
square_y = 88;
square = [square_x square_y 35 35];
A = imread (label);
A = imcrop(A, square);

I am trying to replace the cropped image with a new image at the same coordinates as the cropped image, so there is "rgb2".

[width height] = size(rgb2);
A(square_y : (square_y + height - 1), square_x : (square_x + width - 1), :) = rgb2;

KSSV 2020-2-10

在 MATLAB Online 中打开

square_x = 55;
square_y = 88;
square = [square_x square_y 35 35];
A = imread (label);
rgb2 = imcrop(A, square);
[width height] = size(rgb2);
A(square_y : (square_y + height - 1), square_x : (square_x + width - 1), :) = rgb2;