regiongrowing_nregiongrowing_nRegiongrowingNRegiongrowingNregiongrowing_n (算子)

名称

regiongrowing_nregiongrowing_nRegiongrowingNRegiongrowingNregiongrowing_n — 使用区域生长对多通道图像进行分割。

签名

描述

regiongrowing_nregiongrowing_nRegiongrowingNRegiongrowingNRegiongrowingNregiongrowing_n performs a multi-channel regiongrowing. The channels give rise to an n-dimensional feature vector. Neighboring points are aggregated into the same region if the difference of their feature vectors with respect to the given metric lies in the interval [MinToleranceMinToleranceMinToleranceMinToleranceminTolerancemin_tolerance, MaxToleranceMaxToleranceMaxToleranceMaxTolerancemaxTolerancemax_tolerance]. Only neighbors of the 4-neighborhood are examined. The following metrics can be used:

Let denote the gray value in the feature vector at point of the image, and likewise be the gray value in the feature vector at point a neighboring point . Let be the gray value with index . Furthermore, let denote MinToleranceMinToleranceMinToleranceMinToleranceminTolerancemin_tolerance and denote MaxToleranceMaxToleranceMaxToleranceMaxTolerancemaxTolerancemax_tolerance。

'1-norm'：

Sum of absolute values

'2-norm'：

Euclidean distance

'3-norm'：

p - Norm with p = 3

'4-norm'：

p - Norm with p = 4

'n-norm'：

Minkowski distance

'max-diff'：

Supremum distance

'min-diff'：

Infimum distance

'variance'：

Variance of gray value differences

'dot-product'：

Dot product

'correlation'：

Correlation

'mean-diff'：

Difference of arithmetic means

'mean-ratio'：

Ratio of arithmetic means

'length-diff'：

Difference of the vector lengths

'length-ratio'：

Ratio of the vector lengths

'n-norm-ratio'：

Ratio of the vector lengths w.r.t the p-norm with p = n

'gray-max-diff'：

Difference of the maximum gray values

'gray-max-ratio'：

Ratio of the maximum gray values

'gray-min-diff'：

Difference of the minimum gray values

'gray-min-ratio'：

Ratio of the minimum gray values

'variance-diff'：

Difference of the variances over all gray values (channels)

'variance-ratio'：

Ratio of the variances over all gray values (channels)

'mean-abs-diff'：

Difference of the sum of absolute values over all gray values (channels)

'mean-abs-ratio'：

Ratio of the sum of absolute values over all gray values (channels)

'max-abs-diff'：

Difference of the maximum distance of the components

'max-abs-ratio'：

Ratio of the maximum distance of the components

'min-abs-diff'：

Difference of the minimum distance of the components

'min-abs-ratio'：

Ratio of the minimum distance of the components

'plane'：

The following has to hold for all :

Regions with an area less than MinSizeMinSizeMinSizeMinSizeminSizemin_size are suppressed.

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）。
• 在元组级别上自动并行化。

参数

结果

regiongrowing_nregiongrowing_nRegiongrowingNRegiongrowingNRegiongrowingNregiongrowing_n 在所有参数正确时返回 2 ( H_MSG_TRUE )。 The behavior with respect to the input images and output regions can be determined by setting the values of the flags 'no_object_result'"no_object_result""no_object_result""no_object_result""no_object_result""no_object_result", 'empty_region_result'"empty_region_result""empty_region_result""empty_region_result""empty_region_result""empty_region_result", and 'store_empty_region'"store_empty_region""store_empty_region""store_empty_region""store_empty_region""store_empty_region" with set_systemset_systemSetSystemSetSystemSetSystemset_system。如有必要，则抛出异常。

可能的前趋

compose2compose2Compose2Compose2Compose2compose2, compose3compose3Compose3Compose3Compose3compose3

替代

class_2dim_supclass_2dim_supClass2dimSupClass2dimSupClass2dimSupclass_2dim_sup, class_ndim_normclass_ndim_normClassNdimNormClassNdimNormClassNdimNormclass_ndim_norm

另见

regiongrowing_meanregiongrowing_meanRegiongrowingMeanRegiongrowingMeanRegiongrowingMeanregiongrowing_mean

模块

基础