Edge Detection

Google Colaboratory
https://colab.research.google.com/drive/17uJcgyUiLoXuTnDzijWFo4Eo_kdoGv9e

https://docs.opencv.org/3.4/d8/dbc/tutorial_histogram_calculation.html
https://docs.opencv.org/3.4/dd/d49/tutorial_py_contour_features.html
https://docs.opencv.org/4.x/d4/d13/tutorial_py_filtering.html
https://docs.opencv.org/4.x/da/d22/tutorial_py_canny.html
https://docs.opencv.org/3.4/d2/d2c/tutorial_sobel_derivatives.html
https://github.com/liyiniiecas/A_Dual-polarimetric_SAR_Ship_Detection_Dataset
https://qiita.com/icoxfog417/items/53e61496ad980c41a08e
https://note.com/npaka/n/naae77d6af87d
https://tatsy.github.io/programming-for-beginners/python/figure-detection/
https://blog.imind.jp/entry/2019/01/14/193441