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 Commenti
Image Analyst
il 4 Lug 2020
Use imdilate() then and it with the original
neighbors = imdilate(bw, true(3)) & ~bw;
Risposte (2)
KSSV
il 21 Set 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 Commenti
Walter Roberson
il 17 Ott 2017
This code does not answer the questions "Find them in what sense? What output are you looking for?"
Mehadi Hasan
il 22 Ott 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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