How to find the dimension of lines after detecting the 2 lines using Line Detection Hough Transform

Hi, i need some help in finding the dimension of lines. After i detect two lines using Hough Transform, i wanna do further processing, for example calculating the lines is parallel or not. So, first, i need the dimension of the two lines, can anyone help me. Thank you

Answer 1

[Adi]

What do you exactly mean by dimensions? Length? Slope?

Answer 2

[gargoyle]

Do you mean you want the pixel indices? i.e. addresses of the lines in the image which you can then use to determine other parameters?