how to find connected neighbors?

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jenifer Ask
jenifer Ask 2019년 11월 13일
답변: KSSV 2019년 11월 13일
How do I find a neighbor of pixels with a neighbor whose value is 1?
(Loop to find connected neighbors)
I tried to run the operation on this code but failed
[y,x] = find(I) ;
figure
imshow(I)
hold on
plot(x,y,'.b')
i=x(100)
j=y(100)
neighbors(1) = I(i-1,j-1);
plot(i-1,j-1,'*r')
neighbors(2) = I(i-1,j);
plot(i-1,j,'*r')
neighbors(3) = I(i-1,j+1);
plot(i-1,j+1,'*r')
neighbors(4) = I(i,j-1);
plot(i,j-1,'*r')
neighbors(5) = I(i,j+1);
plot(i,j+1,'*r')
neighbors(6) = I(i+1,j-1);
plot(i+1,j-1,'*r')
neighbors(7) = I(i,j);
plot(i,j,'*r')
neighbors(8) = I(i+1,j);
plot(i+1,j,'*r')
neighbors(9) = I(i+1,j+1);
plot(i+1,j+1,'*r')

채택된 답변

KSSV
KSSV 2019년 11월 13일
If you know the location of the pixel..uou can use knnsearch or rangeseach. YOu can also search in mathworks, this question has been addressed multiple times.

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