Please help me on C# application (image proccessing)

Question

hi guys
please download the project
you can find it here : https://ufile.io/95n4z6yz
it is c# app for image processing
after run the app
please add 222.jpg file to it
then work with software
i would like to that my software only find 2 lines (same 224.jpg)
and software know that 2 lines (and name them line1 and line2)
thanks
if you can help me
i have other codes (i can draw automatically many parallel lines between line1 and line2)
thanks