Hi for the past 2 days i am working on a code to get a binary image of my rice samples through edge detection technique.I have used Sobel and Canny but the problem that i face is that at some points the edges are not that sharp kindly help me.

2 views (last 30 days)

Zeeshan Ahmed on 31 Jan 2018

1
Link

Direct link to this question

https://se.mathworks.com/matlabcentral/answers/379970-hi-for-the-past-2-days-i-am-working-on-a-code-to-get-a-binary-image-of-my-rice-samples-through-edge

Commented: Matt J on 25 Feb 2018

Hi for the past 2 days i am working on a code to get a binary image of my rice samples through edge detection technique.I have used Sobel and Canny but the problem that i face is that while using canny filter as it provide a better result over Sobel, at some points the edges are not that sharp and due to that some grains are missing in the final binary image kindly help me. Result that i get

0 Comments
Show -2 older commentsHide -2 older comments

Accepted Answer

Matt J on 31 Jan 2018

1
Link

Direct link to this answer

https://se.mathworks.com/matlabcentral/answers/379970-hi-for-the-past-2-days-i-am-working-on-a-code-to-get-a-binary-image-of-my-rice-samples-through-edge#answer_302814

Edited: Matt J on 31 Jan 2018

Open in MATLAB Online

This seems to work

     A=double(rgb2gray(imread('ricesam6.jpg'))); A=A/max(A(:));
    B=imtophat((entropyfilt(A,ones(11)))  ,strel('disk',21)); 
    C=(medfilt2(double(B>.8),[1,1]*11));
    result=bwpropfilt(C>0,'MajorAxisLength',[120,inf]);