tb_stat_correlation — 2D typed op

数据种类:matrixmatrix

调用:fullseye.apply(img, "tb_stat_correlation", a=0.5, b=0.5)(2-D 的模型是一张图 + 两个标量旋钮 a,b∈[0,1])

tb_stat_correlation: input → output

*图为在 128×128 合成输入上实际运行的输出。左为输入,右为输出。点云以俯视散点显示(亮度 = z),一维序列为折线,体数据为沿 z 的最大值投影,视频为中间帧,复数图像为幅值;无法成像的返回值直接显示数值。*

*旋钮 a 不改变输出(实测: 0.1 / 0.5 / 0.9 相同)。*

*旋钮 b 不改变输出(实测: 0.1 / 0.5 / 0.9 相同)。*

阶段(前置算子 → 本算子,从左到右):

tb_stat_correlation: stages (docs site)

换别的图像(合成场景 / 照片 / 硬币。上排为输入,下排为对应输出。旋钮取默认):

tb_stat_correlation: other inputs (docs site)

用法

Pearson 相关系数矩阵,输入 `(N, D) 观测 → 输出 (D, D)`。

> 以下的详细说明为原文 —— 摘要与标题已翻译。

Same orientation as :func:stat_covariance (rows = observations).

Entries are clipped to `[-1, 1]` (floating-point can overshoot by an

ulp), the diagonal is exactly `1` and the matrix exactly symmetric by

construction.

**A constant column raises `ValueError`** (naming the column) instead of

yielding NaN: correlation with a zero-variance variable is mathematically

undefined (0/0), and a NaN that surfaces three ops downstream is the

classic zero-division bug family this module fails closed against. Drop or

perturb the constant column deliberately if that is what you mean.

HALCON: no public tuple operator (see :func:stat_covariance).

Typed bridge of the math op `stat_correlation into the 2-D evolution registry: the same implementation, called under the op(v, a, b) convention. This op has no tunable parameter; a and b` are unused.

参考(示例数据・文献)

• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。

• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。

在 Studio 中试试

下面的程序已确认可以运行(与图相同的输入)。在 Studio 帮助中,此块会变成按钮,可当场加载并运行。

img_to_matrix 0.50 0.50
tb_stat_correlation 0.50 0.50

▸ Load this pipeline  ·  Load & run

可运行的示例(实际调用该算子并已验证的样例)

下面的示例调用的是底层账本算子 stat_correlation。此桥接算子只是把同一实现适配为 fn(v, a, b) 约定,行为完全相同(只是调用形式不同)。

math_metrologypy -3.11 examples/math_metrology.py

poc_colocalization_crosstalkpy -3.11 examples/poc_colocalization_crosstalk.py

poc_ct_fidelitypy -3.11 examples/poc_ct_fidelity.py

poc_machine_condition_fusionpy -3.11 examples/poc_machine_condition_fusion.py

poc_thermal_radiometrypy -3.11 examples/poc_thermal_radiometry.py

类型可衔接的下一个算子(可接受 matrix 作为输入)

identity · tb_mat_pinv · tb_mat_cond · tb_stat_covariance · matrix_to_img

同类别(typed)

tb_points_to_voxel · tb_estimate_point_normals · tb_iss_keypoints · tb_project_points · tb_render_point_depth · tb_statistical_outlier_removal · tb_radius_outlier_removal · tb_voxel_grid_downsample


*Provenance: ops.py — 2D 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.