How to combine image with mask

Question

sina alizadeh 2017-1-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/319311-how-to-combine-image-with-mask

回答： Negesse Tadesse 2019-9-1

hi , i read a image and want combine with mask that contain a line on it , i make a mask but i can't combine a image and mask that show line on the reading image

   im=imread('apple.jpg');
       mask=255*zeros(size(im));
       mask=insertShape(mask,'line',[50 50  250 250],'linewidth',10,'color',[255 255 0]);
       mask=uint8(mask);
       subplot(1,3,1);
       imshow(im);
       title('original');
       subplot(1,3,2);
       imshow(mask);
%    how to combine im and mask
%    im3 = combine(im , mask)
       subplot(1,3,3)
       imshow(im3);
       title('combine')

how can i do this and show line mask on original image?

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Answer 1

Walter Roberson 2017-1-6

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/319311-how-to-combine-image-with-mask#answer_249634

在 MATLAB Online 中打开

im3 = im;
im3(mask ~= 0) = mask(mask ~= 0);

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Image Analyst 2017-1-6

This burns it into the image. If you just want the line in the overlay above the image without altering the image at all, use plot() or line().

sina alizadeh 2017-1-7

i want to burns it in image , tanks for your help

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Answer 2

Changoleon 2017-1-6

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/319311-how-to-combine-image-with-mask#answer_249633

编辑：Walter Roberson 2017-1-6

在 MATLAB Online 中打开

im=double(imread('autumn.tif'));
red = im(:,:,1);
gre = im(:,:,2);
blu = im(:,:,3);
mask=255*zeros(size(red));
mask=insertShape(mask,'line',[50 50  250 250],'linewidth',10,'color',[255 255 0]);
mask_red = mask(:,:,1).*red;
mask_gre = mask(:,:,1).*gre;
mask_blu = mask(:,:,1).*blu;