I have to separate canal edge from the background?Can u provide the steps or function like how to code?

Separate edge from background

Answer 1

[Bshara Murr]

Try this i am not sure if this will help you

I = imread(you image gows here);

[rows, columns, numberOfColorChannels] = size(I);

d = 255 * zeros(rows, columns, 3, 'uint8');

grayImage = rgb2gray(I);

imshow(grayImage);

hFH = imfreehand();

binaryImage = hFH.createMask();

bwimage = grayImage;

bwimage(~binaryImage) = 0;

for i = 1:rows

    for j  = 1:columns

        if bwimage(i,j) ~ 0;

            d(i,j,:)=I(i,j,:);

        end

    end

end

imshow(d);

[Bshara Murr]

I may have created some unwanted or unused variables while trying. Note that you will have to draw the region that you want to keep using the cursor.