Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Accurate Corner Detection using 4-directional Edge Labeling and Corner Positioning Templates

  • Park, Eun-Jin (Dept. of Electronics, Graduate School, Kyungpook National University) ;
  • Choi, Doo-Hyun (School of Electronics Engineering, Kyungpook National University)
  • Received : 2010.09.17
  • Accepted : 2011.04.08
  • Published : 2011.07.01
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Abstract

Corner positioning templates are proposed in order to detect the accurate positions of corners that are extracted using 4-directional edge labeling. Top-down and bottom-up directional labeling are used to label the edge segments with four kinds of labels according to their directions. The points whose labels have changed are then determined as corners. The exact positions of the missing corners due to the disconnected edges are detected through the corner positioning templates that are determined according to the labels of start-points and end-points after the two-pass edge labeling. Experiment results show that the proposed method can detect the exact positions of the real corners.

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References

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