Robust line detection using two-orthogonal direction image scanning

we propose a detector using two-orthogonal direction image scanning (TODIS) with the capability of multi-scale detection by utilizing the prior knowledge of lines. The two step scanning procedures and the prominence filter are designed to impose the geometric constrains on pixel edges for the purpose of providing prior assessment on the structure of line segments. In addition, through dividing the original problem into smaller subproblems, the computational load has been reduced, and there is no extra storage cost for the detector’s adaptiveness on the slope resolution of lines during detection. The simulation results shows significant improved detection accuracy as compared to the popular methods.