How to make a road lane for a synthetic image in gray scale?

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I'm trying to make a synthetic image in gray scale with some lines to simulate a road lane similar to the image attached. I appreciate any help.

Accepted Answer

Massimo Zanetti
Massimo Zanetti on 20 Dec 2016
Here it is:
%create one element
Z = zeros(100,101);
%lateral lanes
Z(:,[11:15,87:91]) = 1;
%mid lane (dashed)
Z(1:50,49:53) = 1;
%repeat element N times to create the road pattern
N = 4;
Z = repmat(Z,N,1);
%show image

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