How can i somehow autofill black-spots in an RGB image.

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JAI PRAKASH
JAI PRAKASH 2018-6-4
回答： Image Analyst 2018-6-5

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Aditya Adhikary
Aditya Adhikary 2018-6-5
These may help: imfill and regionfill.
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JAI PRAKASH
JAI PRAKASH 2018-6-5
编辑：JAI PRAKASH 2018-6-5
Hey Thanks, But it does not work for complex problems
I used following code:
newimage=imread('City_AskAutofill.jpg');
R = newimage(:,:,1); % splitting RGB because regionfill need grayscale.
G = newimage(:,:,2);
B = newimage(:,:,3);
mask = uint8(R) < 2;
mask = imfill(mask,'holes');
mask = imerode(mask,strel('disk',10));
mask = imdilate(mask,strel('disk',20));
R_autofill = regionfill(R,mask);
mask = uint8(G) < 2;
mask = imfill(mask,'holes');
mask = imerode(mask,strel('disk',10));
mask = imdilate(mask,strel('disk',20));
G_autofill = regionfill(G,mask);
mask = uint8(B) < 2;
mask = imfill(mask,'holes');
mask = imerode(mask,strel('disk',10));
mask = imdilate(mask,strel('disk',20));
B_autofill = regionfill(B,mask);
newimage_autofill(:,:,1)=R_autofill;
newimage_autofill(:,:,2)=G_autofill;
newimage_autofill(:,:,3)=B_autofill;
imtool(newimage_autofill) % this is the image which you are seeing above.
But this approach is not effective on other problem, like I have mentioned further below.
How can I improve this approach. Thanks

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更多回答（1 个）

Image Analyst
Image Analyst 2018-6-5
MATLAB does not have a sophisticated region filling algorithm like the bandage tool in Photoshop. If you want/need something like that, use Photoshop or figure out what algorithm they used and program it up yourself.

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