Gray image to rgb image
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Elysi Cochin
am 27 Aug. 2013
Kommentiert: Image Analyst
am 19 Feb. 2022
I converted a color image to gray using rgb2gray and denoised the image. Now i wanted to convert the denoised gray image to a color image... Is it possible.... Please can someone help me.... Please do reply....
0 Kommentare
Akzeptierte Antwort
Image Analyst
am 27 Aug. 2013
You can use ind2rgb() but you have to supply a colormap. It won't look like the original colors though - you lost those when you went to gray. Why don't you just denoise each channel one at a time? Or convert to hsv and denoise just the v channel. Either of those methods will not lose the color information like your method does.
3 Kommentare
kailas jobu
am 19 Feb. 2022
i have this code that filters image,but when i use it with a colored image it turns grayscale. could you help me?
I = imread('phonebox2_noisy.bmp');
Im = rgb2gray(I);
noisy = imnoise(Im, 'salt & pepper',0.1);
[m,n] = size(noisy);
output = zeros(m,n);
output = uint8(output);
for i = 1:m
for j = 1:n
xmin = max(1,i-1);
xmax = min(m,i+1);
ymin = max(1,j-1);
ymax = min(n,j+1);
temp = noisy(xmin:xmax, ymin:ymax);
output(i,j) = median(temp(:));
end
end
figure(1);
set(gcf, 'Position', get(0,'ScreenSize'));
subplot(131),imshow(I),title('Original Image');
subplot(133),imshow(output),title('filtered image');
Image Analyst
am 19 Feb. 2022
@kailas jobu, after you read this
attach 'phonebox2_noisy.bmp' in your own, new question.
Also attach the "noisy()" function. And you might want to consider medfilt2() instead of median.
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Image Processing Toolbox finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!