Get coordinates of edges - Image Processing

Question

Rajbir Singh 2019-8-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/478130-get-coordinates-of-edges-image-processing

评论： KALYAN ACHARJYA 2019-8-31

I am performing Roberts method for edge detection. But my aim is to get the coordinates of the edges after applying Roberts method or any other method.

Before Roberts method:

After Roberts Method:

Further more i want to calculate the coordinate of these 4 vertices.

Is there is any solution for this problem ?

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Answer 1

KALYAN ACHARJYA 2019-8-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/478130-get-coordinates-of-edges-image-processing#answer_389651

编辑：KALYAN ACHARJYA 2019-8-29

在 MATLAB Online 中打开

Lets say image_test is the output binary image (After Roberts Method)

data=corner(image_test);
r_data=data(:,1);
c_data=data(:,2);
min_colm=min(c_data);
idx1=find(c_data==min_colm);
ver1=[r_data(idx1(1)),min_colm]
max_colm=max(c_data);
idx2=find(c_data==max_colm);
ver2=[r_data(idx2(1)),max_colm]
min_row=min(r_data);
idx3=find(r_data==min_row);
ver3=[min_row,c_data(idx3(1))]
max_row=max(r_data);
idx4=find(r_data==max_row);
ver4=[max_row,c_data(idx4(1))]