Applying 2D filter on RGB image
조회 수: 14 (최근 30일)
이전 댓글 표시
Hi all,
I'm having some troubles with applying a vector filter on RGB image, I'm not getting errors but I'm not getting an output which makes sense either. I'm losing at least one of the color channels somehow but I don't know what I'm doing wrong. You can find the application I'm trying to implement in the screenshot attached and I also attach the code to this entry. Looking forward to your help.
Thanks in advance
댓글 수: 0
채택된 답변
Subhadeep Koley
2020년 11월 3일
Hi Ozan, the below code might help!
img = imread('kodim07.png');
imshow(img)
img = imresize(img, 2, 'bicubic');
figure
imshow(img)
% define filter kernel
kernel = [1, -5, 20, 20, -5, 1] / 32;
% extracting rgb channels individually
rChannel = img(:, :, 1);
gChannel = img(:, :, 2);
bChannel = img(:, :, 3);
% applying filter to the extracted matrices separately
rChannelNew = filter2(kernel, rChannel);
gChannelNew = filter2(kernel, gChannel);
bChannelNew = filter2(kernel, bChannel);
% concatenate matrices along 3rd dimension
outputImg = cat(3, rChannelNew, gChannelNew, bChannelNew);
% convert the numeric matrix to image
outputImg = mat2gray(outputImg);
figure
imshow(outputImg)
댓글 수: 0
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Image Processing Toolbox에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!