image processing canny edge detection

i want to convert image without go to gray scal by split color image by to R G and B after that converting to canny and sum 3 pic

[Image Analyst]

Duplicate of https://www.mathworks.com/matlabcentral/answers/538715-image-processing-edge-edge-detection#answer_443611

Answer 1

[Walter Roberson]

YourImage = imresize(imread('baby.jpg'), 1/8);

R = YourImage(:,:,1);
G = YourImage(:,:,2);
B = YourImage(:,:,3);

ER = edge(R, 'canny');
EG = edge(G, 'canny');
EB = edge(B, 'canny');

anyedge = ER | EG | EB;
alledge = ER & EG & EB;
majorityedge = (ER + EG + EB) >= 2;

Rany = R; Rany(anyedge) = 255;
Gany = G; Gany(anyedge) = 0;
Bany = B; Bany(anyedge) = 0;
RGBany = cat(3, Rany, Gany, Bany);

Rall = R; Rall(alledge) = 255;
Gall = G; Gall(alledge) = 0;
Ball = B; Ball(alledge) = 0;
RGBall = cat(3, Rall, Gall, Ball);

subplot(3,2,1)
imshow(YourImage);
title('Original');
subplot(3,2,2);
imshow(anyedge)
title('Edge found in any plane');
subplot(3,2,3)
imshow(majorityedge)
title('Edge found in 2+ planes');
subplot(3,2,4)
imshow(alledge)
title('Edge found in all planes');
subplot(3,2,5)
imshow(RGBany)
title('Original outlined with any edge');
subplot(3,2,6)
imshow(RGBall)
title('Original outlined with all edge')

Bany = B; Bany(anyedge) = 0;

[Mohammad abu aqoulah]

i want to convert RGB image to R , G and B

after that convert R to canny edge

after that convert G to canny edge

after that convert B to canny edge

after that sum three pic

[Mohammad abu aqoulah]

i mean

i have image i want firstly split this image into R , G and B and show 3 images red , green and blue images

secondly apply edge canny in each 3 colore image

canny edge detection on green image (g_d)

canny edge detection on blue image (b_d)

canny edge detection on red image (r_d)

after that add (g_d)+(b_d)+(r_d) to have colore canny detection

[Image Analyst]

Looks like it was answered in your duplicate question: https://www.mathworks.com/matlabcentral/answers/538715-image-processing-edge-edge-detection#comment_877923