I created a code which does filtering with convulution but it gives an error
조회 수: 1 (최근 30일)
이전 댓글 표시
A = imread('lena.jpg');
F = uint8([-1 -1 -1;0 0 0;1 1 1]);
B = uint8(padarray(A,[1 1]));
Output = uint8(zeros(size(A)));
for i = 1:size(B,1)-2
for j = 1:size(B,2)-2
X = B(i:i+2,j:j+2).*F;
Output(i,j) = sum(X(:));
end
end
imshow(Output)
but it doesn't work correctly. What is my mistake?
댓글 수: 1
채택된 답변
Chunru
2021년 7월 27일
The image has 3 channels and is a 3D array. You need to loop over the 3rd dimension as well. Use a different image below.
A = imread('onion.png');
F = uint8([-1 -1 -1;0 0 0;1 1 1]);
B = uint8(padarray(A,[1 1]));
Output = uint8(zeros(size(A)));
for k=1:size(B,3)
for i = 1:size(B,1)-2
for j = 1:size(B,2)-2
X = B(i:i+2,j:j+2, k).*F;
Output(i,j, k) = sum(X(:));
end
end
end
subplot(121)
imshow(A)
subplot(122)
imshow(Output)
추가 답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!