最小面积外接矩形( Minimum bounding rectangle )

Finding minimum-area-rectangle for given points?

python opencv minAreaRect 生成最小外接矩形

旋转卡壳——凸多边形最小面积外接矩形

cv2.minAreaRect()

http://dwoll.de/rexrepos/posts/diagBounding.html

qgis Oriented Minimum Bounding Box   
ps:qgis的计算结果，明显有问题，不是想要的结果，不如arcgis的理想

whitebox的算法：
whitebox
MinimumBoundingRectangle.java

qgis的算法:
qgsgeometry.cpp

QgsGeometry QgsGeometry::orientedMinimumBoundingBox