Finding the average of the neighbors of each pixel in an image
13 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I want to replace each pixel by the average of 3 x 3 neighbors using 4-connected neighbors (I4) and 8- connected neighbors (I8).
0 Kommentare
Antworten (1)
Matt J
am 22 Sep. 2021
mean4=conv2(image,[0 1 0; 1 1 1; 0 1 0]/5,'same');
mean8=conv2(image,ones(3)/9,'same');
16 Kommentare
Isabella
am 18 Jul. 2022
@Image Analyst Can I replace each pixel by the avg of its 3x3 neighbors, without I4 or I8?
Image Analyst
am 18 Jul. 2022
You have to specify which pixels to use in the average. That kernel basically specifies which of the 9 pixels in the 3x3 window to use in computing the average. You can specify whatever you want in your kernel. Like if you wanted to replace the center pixel by the average of the 4 on the corners, you'd do
kernel = [1,0,1; 0,0,0; 1,0,1] / 4; % Diagonals only.
blurredImage = conv2(double(grayImage), kernel, 'same');
% or, including the middle pixel:
kernel = [1,0,1; 0,1,0; 1,0,1] / 4; % Diagonals plus center pixel.
blurredImage = conv2(double(grayImage), kernel, 'same');
Siehe auch
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!