Get coordinates of edges - Image Processing
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 ?
Neeta Dsouza answered .
2025-11-20
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))]