opencv 实现任意角度的透视变换 | OpenCV perspectiveTransform
opencv中提供了getPerspectiveTransform函数来获取由四对点间的转换矩阵,输出矩阵为3*3,同时也提供了warpPerspective函数来对通过变换矩阵来对图像进行透视变换的操作,同时还提供了perspectiveTransform来提供对点的转换:getPerspectiveTransform:Calculatesaperspectivetransformfromfourpairsofthecorrespondingpoints.C++:MatgetPerspectiveTransform(InputArraysrc,InputArraydst)C++:MatgetPerspectiveTransform(constPoint2fsrc[],constPoint2fdst[])Python:cv2.getPerspectiveTransform(src,dst)→retvalperspectiveTransf...
opencv中提供了getPerspectiveTransform函数来获取由四对点间的转换矩阵,输出矩阵为3*3, 同时也提供了warpPerspective函数来对通过变换矩阵来对图像进行透视变换的操作,同时还提供了perspectiveTransform来提供对点的转换:getPerspectiveTransform:
Calculates a perspective transform from four pairs of the corresponding points.C++: Mat getPerspectiveTransform(InputArray src, InputArray dst)C++: Mat getPerspectiveTransform(const Point2f src[], const Point2f dst[])Python: cv2.getPerspectiveTransform(src, dst) → retval
perspectiveTransform:
Performs the perspective matrix transformation of vectors.
C++: void perspectiveTransform(InputArray src, OutputArray dst, InputArray m)Python: cv2.perspectiveTransform(src, m[, dst]) → dstC: void cvPerspectiveTransform(const CvArr* src, CvArr* dst, const CvMat* mat)Parameters: src – input two-channel or three-channel floating-point array; each element is a 2D/3D vector to be transformed.dst – output array of the same size and type as src.m – 3x3 or 4x4 floating-point transf...