find 8 neighbours in image
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hi dears..... plz help me
how i find the 8 neighbours around the white pixels...
3 Kommentare
Image Analyst
am 4 Jul. 2020
Use imdilate() then and it with the original
neighbors = imdilate(bw, true(3)) & ~bw;
Antworten (2)
KSSV
am 21 Sep. 2017
Read about knnsearch
I = imread('2.png') ;
I = rgb2gray(I) ;
[y,x] = find(I) ;
% 8 nearest neighbors
[ny,nx] = size(I) ;
[X,Y] = meshgrid(1:nx,1:ny) ;
% global indices
idx = knnsearch([X(:) Y(:)],[x,y],'k',8) ;
% sub indices
[i,j] = ind2sub(size(I),idx) ;
2 Kommentare
Walter Roberson
am 17 Okt. 2017
This code does not answer the questions "Find them in what sense? What output are you looking for?"
Mehadi Hasan
am 22 Okt. 2021
I = imread('2.png') ;
I = rgb2gray(I) ;
[y,x] = find(I) ;
% 8 nearest neighbors
[ny,nx] = size(I) ;
[X,Y] = meshgrid(1:1x,1:1y) ;
% global indices
idx = knnsearch([X(:1) Y(:1)],[x,y],'k',8) ;
% sub indices
[i,j] = ind2sub(size(I),idx) ;
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