Backup diff of Canny (No. 2)

• Backup list
• View the diff current.
• View the diff for visual.
• View the source.
• View the backup.
• Go to Canny.
  • 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)

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.

- 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]