projective_trans_point_2dT_projective_trans_point_2dProjectiveTransPoint2dProjectiveTransPoint2dprojective_trans_point_2d (算子)
名称
projective_trans_point_2dT_projective_trans_point_2dProjectiveTransPoint2dProjectiveTransPoint2dprojective_trans_point_2d — 使用投影变换矩阵投影一个齐次二维点。
签名
Herror T_projective_trans_point_2d(const Htuple HomMat2D, const Htuple Px, const Htuple Py, const Htuple Pw, Htuple* Qx, Htuple* Qy, Htuple* Qw)
void ProjectiveTransPoint2d(const HTuple& HomMat2D, const HTuple& Px, const HTuple& Py, const HTuple& Pw, HTuple* Qx, HTuple* Qy, HTuple* Qw)
HTuple HHomMat2D::ProjectiveTransPoint2d(const HTuple& Px, const HTuple& Py, const HTuple& Pw, HTuple* Qy, HTuple* Qw) const
double HHomMat2D::ProjectiveTransPoint2d(double Px, double Py, double Pw, double* Qy, double* Qw) const
static void HOperatorSet.ProjectiveTransPoint2d(HTuple homMat2D, HTuple px, HTuple py, HTuple pw, out HTuple qx, out HTuple qy, out HTuple qw)
HTuple HHomMat2D.ProjectiveTransPoint2d(HTuple px, HTuple py, HTuple pw, out HTuple qy, out HTuple qw)
double HHomMat2D.ProjectiveTransPoint2d(double px, double py, double pw, out double qy, out double qw)
def projective_trans_point_2d(hom_mat_2d: Sequence[float], px: MaybeSequence[Union[float, int]], py: MaybeSequence[Union[float, int]], pw: MaybeSequence[Union[float, int]]) -> Tuple[Sequence[float], Sequence[float], Sequence[float]]
def projective_trans_point_2d_s(hom_mat_2d: Sequence[float], px: MaybeSequence[Union[float, int]], py: MaybeSequence[Union[float, int]], pw: MaybeSequence[Union[float, int]]) -> Tuple[float, float, float]
描述
projective_trans_point_2dprojective_trans_point_2dProjectiveTransPoint2dProjectiveTransPoint2dProjectiveTransPoint2dprojective_trans_point_2d applies the homogeneous projective
transformation matrix HomMat2DHomMat2DHomMat2DHomMat2DhomMat2Dhom_mat_2d to all homogeneous input
points (PxPxPxPxpxpx,PyPyPyPypypy,PwPwPwPwpwpw) and returns an array of
homogeneous output points (QxQxQxQxqxqx,QyQyQyQyqyqy,QwQwQwQwqwqw). The
transformation is described by the homogeneous transformation matrix
given in HomMat2DHomMat2DHomMat2DHomMat2DhomMat2Dhom_mat_2d. This corresponds to the following
equation (input and output points as homogeneous vectors):
To transform the homogeneous coordinates to Euclidean coordinates,
they have to be divided by QwQwQwQwqwqw:
若需转换的点在标准图像坐标系中指定，其行坐标必须通过 PxPxPxPxpxpx 传递，列坐标则通过 PyPyPyPypypy 传递。此操作旨在为图像建立右手坐标系，尤其确保旋转操作按正确方向执行。需注意矩阵中 (x,y) 的顺序与图像坐标中常规的 (行,列) 顺序自然对应。
执行信息
- 多线程类型：可重入（与非独占算子并行运行）。
- 多线程作用域：全局（可从任何线程调用）。
- 在内部数据级别上自动并行化。
参数
HomMat2DHomMat2DHomMat2DHomMat2DhomMat2Dhom_mat_2d (输入控制) hom_mat2d → HHomMat2D, HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)
Homogeneous projective transformation matrix.
PxPxPxPxpxpx (输入控制) number(-array) → HTupleMaybeSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Input point (x coordinate).
PyPyPyPypypy (输入控制) number(-array) → HTupleMaybeSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Input point (y coordinate).
PwPwPwPwpwpw (输入控制) number(-array) → HTupleMaybeSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Input point (w coordinate).
QxQxQxQxqxqx (输出控制) number(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)
Output point (x coordinate).
QyQyQyQyqyqy (输出控制) number(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)
Output point (y coordinate).
QwQwQwQwqwqw (输出控制) number(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)
Output point (w coordinate).
可能的前趋
vector_to_proj_hom_mat2dvector_to_proj_hom_mat2dVectorToProjHomMat2dVectorToProjHomMat2dVectorToProjHomMat2dvector_to_proj_hom_mat2d,
hom_vector_to_proj_hom_mat2dhom_vector_to_proj_hom_mat2dHomVectorToProjHomMat2dHomVectorToProjHomMat2dHomVectorToProjHomMat2dhom_vector_to_proj_hom_mat2d,
proj_match_points_ransacproj_match_points_ransacProjMatchPointsRansacProjMatchPointsRansacProjMatchPointsRansacproj_match_points_ransac,
proj_match_points_ransac_guidedproj_match_points_ransac_guidedProjMatchPointsRansacGuidedProjMatchPointsRansacGuidedProjMatchPointsRansacGuidedproj_match_points_ransac_guided,
hom_mat3d_projecthom_mat3d_projectHomMat3dProjectHomMat3dProjectHomMat3dProjecthom_mat3d_project
另见
projective_trans_imageprojective_trans_imageProjectiveTransImageProjectiveTransImageProjectiveTransImageprojective_trans_image,
projective_trans_image_sizeprojective_trans_image_sizeProjectiveTransImageSizeProjectiveTransImageSizeProjectiveTransImageSizeprojective_trans_image_size,
projective_trans_regionprojective_trans_regionProjectiveTransRegionProjectiveTransRegionProjectiveTransRegionprojective_trans_region,
projective_trans_contour_xldprojective_trans_contour_xldProjectiveTransContourXldProjectiveTransContourXldProjectiveTransContourXldprojective_trans_contour_xld,
projective_trans_pixelprojective_trans_pixelProjectiveTransPixelProjectiveTransPixelProjectiveTransPixelprojective_trans_pixel
模块
基础