[1] Harrisコーナー検出 — OpenCV-Python Tutorials 1 documentation, http://labs.eecs.tottori-u.ac.jp/sd/Member/oyamada/OpenCV/html/py_tutorials/py_feature2d/py_features_harris/py_features_harris.html
[2] JavaScriptでHarrisオペレータによるコーナー検出 – Rest Term, https://rest-term.com/archives/2986/
[3] GitHub - trg1984/HarrisCornerDetector: Harris' Corner Detector Algorithm in JavaScript, complete with an example., https://github.com/trg1984/HarrisCornerDetector
[4] コーナー検出のためのFASTアルゴリズム — OpenCV-Python Tutorials 1 documentation, http://labs.eecs.tottori-u.ac.jp/sd/Member/oyamada/OpenCV/html/py_tutorials/py_feature2d/py_fast/py_fast.html#fast
[5] jsfeat/jsfeat_fast_corners.js at master · inspirit/jsfeat · GitHub, https://github.com/inspirit/jsfeat/blob/master/src/jsfeat_fast_corners.js