moments_object_model_3dT_moments_object_model_3dMomentsObjectModel3dMomentsObjectModel3dmoments_object_model_3d (算子)

名称

moments_object_model_3dT_moments_object_model_3dMomentsObjectModel3dMomentsObjectModel3dmoments_object_model_3d — 计算三维对象模型的均值或二阶中心矩。

签名

moments_object_model_3d( : : ObjectModel3D, MomentsToCalculate : Moments)

描述

moments_object_model_3dmoments_object_model_3dMomentsObjectModel3dMomentsObjectModel3dMomentsObjectModel3dmoments_object_model_3d 计算三维对象模型的均值或二阶中心矩。 To calculate the mean of the points of the 3D object model, select 'mean_points'"mean_points""mean_points""mean_points""mean_points""mean_points" in MomentsToCalculateMomentsToCalculateMomentsToCalculateMomentsToCalculatemomentsToCalculatemoments_to_calculate. If instead the central moment of second order should be calculated, select 'central_moment_2_points'"central_moment_2_points""central_moment_2_points""central_moment_2_points""central_moment_2_points""central_moment_2_points". The results are the variances of the x, y, z, x-y, x-z, and y-z axes. To compute the three principal axes of the 3D object model select 'principal_axes'"principal_axes""principal_axes""principal_axes""principal_axes""principal_axes" in MomentsToCalculateMomentsToCalculateMomentsToCalculateMomentsToCalculatemomentsToCalculatemoments_to_calculate. The result is a pose with the mean of the points as center. The coordinate system that corresponds to the pose has the x-axis along the first principal axis, the y-axis along the second principal axis and the z-axis along the third principal axis.

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）。
未采用并行化处理。

参数

ObjectModel3DObjectModel3DObjectModel3DObjectModel3DobjectModel3Dobject_model_3d (输入控制) object_model_3d(-array) → (handle)

3D 对象模型的句柄。

MomentsToCalculateMomentsToCalculateMomentsToCalculateMomentsToCalculatemomentsToCalculatemoments_to_calculate (输入控制) number(-array) → (string)

Moment to calculate.

默认值： 'mean_points' "mean_points" "mean_points" "mean_points" "mean_points" "mean_points"

值列表： 'central_moment_2_points'"central_moment_2_points""central_moment_2_points""central_moment_2_points""central_moment_2_points""central_moment_2_points", 'mean_points'"mean_points""mean_points""mean_points""mean_points""mean_points", 'principal_axes'"principal_axes""principal_axes""principal_axes""principal_axes""principal_axes"

MomentsMomentsMomentsMomentsmomentsmoments (输出控制) number(-array) → (real)

Calculated moment.

元素数量： Moments == ObjectModel3D

示例（HDevelop）

gen_object_model_3d_from_points (rand(200), rand(200),\
                                  rand(200), ObjectModel3D)
moments_object_model_3d (ObjectModel3D, ['mean_points',\
                         'central_moment_2_points','principal_axes'], \
                         Moments)

结果

moments_object_model_3dmoments_object_model_3dMomentsObjectModel3dMomentsObjectModel3dMomentsObjectModel3dmoments_object_model_3d 在所有参数正确时返回 2 ( H_MSG_TRUE )。如有必要，则抛出异常。

可能的前趋

read_object_model_3dread_object_model_3dReadObjectModel3dReadObjectModel3dReadObjectModel3dread_object_model_3d, connection_object_model_3dconnection_object_model_3dConnectionObjectModel3dConnectionObjectModel3dConnectionObjectModel3dconnection_object_model_3d

可能的后继

project_object_model_3dproject_object_model_3dProjectObjectModel3dProjectObjectModel3dProjectObjectModel3dproject_object_model_3d, object_model_3d_to_xyzobject_model_3d_to_xyzObjectModel3dToXyzObjectModel3dToXyzObjectModel3dToXyzobject_model_3d_to_xyz

另见

volume_object_model_3d_relative_to_planevolume_object_model_3d_relative_to_planeVolumeObjectModel3dRelativeToPlaneVolumeObjectModel3dRelativeToPlaneVolumeObjectModel3dRelativeToPlanevolume_object_model_3d_relative_to_plane

模块

三维计量

算子