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  • 1 (2017-01-31 (Tue) 03:34:06)
  • 2 (2017-06-04 (Sun) 23:25:02)
  • 3 (2018-05-08 (Tue) 00:14:56)
  • 4 (2018-05-08 (Tue) 11:33:11)
  • 5 (2020-08-19 (Wed) 16:33:55)

- https://en.wikipedia.org/wiki/Canny_edge_detector
- http://opencv.blog.jp/[http://opencv.blog.jp/algorithm/canny%E3%82%A8%E3%83%83%E3%82%B8%E6%A4%9C%E5%87%BA%E5%99%A8 algorithm/cannyエッジ検出器]

- Canny edge detection
--  http://imagingsolution.net/imaging/canny-edge-detector/
 １．ノイズ除去 (ガウシアン)
 ２．輪郭抽出 (ソーベル)
 ３．非極大抑制 (エッジ以外を消す)
 ４．ヒステリシスしきい値処理 (弱いエッジを消す、中ぐらいのエッジは強いエッジに繋がらないものを消す)