내부 최소사각형 - minAreaRect

minAreaRect

Finds a rotated rectangle of the minimum area enclosing the input 2D point set.

C++: RotatedRect minAreaRect(InputArray points)

Python: cv2.minAreaRect(points) → retval

C: CvBox2D cvMinAreaRect2(const CvArr* points, CvMemStorage* storage=NULL )

Python: cv.MinAreaRect2(points, storage=None) → Box2D

Parameters:	points – Input vector of 2D points, stored in: std::vector<> or Mat (C++ interface) CvSeq* or CvMat* (C interface) Nx2 numpy array (Python interface)

The function calculates and returns the minimum-area bounding rectangle (possibly rotated) for a specified point set. See the OpenCV sample minarea.cpp . Developer should keep in mind that the returned rotatedRect can contain negative indices when data is close the the containing Mat element boundary.