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Multi-scale and Multi-orientation Local Feature Extraction for Lane Detection Using High-Level Information

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4 Author(s)
Xiangjing An ; Coll. of Mechatron. & Autom., Nat. Univ. of Defense Technol., Changsha, China ; Jian Li ; Erke Shang ; Hangen He

Task-specified computer vision systems usually need to detect certain targets at multiple scales of resolution and multiple orientations. For a vision-based lane detection system, it is essential to detect the lane-markings at different scales and orientations. In this paper, we illustrate an efficient local feature extraction algorithm for the lane detection system, which is tuned by the high-level information about the lane-markings. Firstly, we deduced the explicit expression of the scale and orientation for the local feature of the lane markings. Secondly, a filter bank for local feature extraction is designed using the SVD approach for certain orientation and scale. Thirdly, the filter bank is used to tune a special lane-marking detector to expected orientation and scale at different locations of the image. Then, non-maxima suppression is performed along the corresponding direction at that location. Lastly, a hysteresis thresholding is applied to identify the exact feature points. Unlike other works in which the authors try to remove the false local feature points with the help of high-level information, we prefer to introduce the high-level information to the local feature detection stage as early as possible. Experiment results show that the proposed algorithm is very efficient for lane detection especially in very complex road seniors.

Published in:

Image and Graphics (ICIG), 2011 Sixth International Conference on

Date of Conference:

12-15 Aug. 2011