fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter (算子)

名称

fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter — 计算一个区域的模糊周长。

签名

fuzzy_perimeter(Regions, Image : : Apar, Cpar : Perimeter)

描述

算子 fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter is used to determine the differences of fuzzy membership between an image point and its neighbor points. The right and lower neighbor are taken into account. The fuzzy perimeter is then defined as follows: where MxN is the size of the image, and u(x(m,n)) is the fuzzy membership function (i.e., the input image). This implementation uses Zadeh's Standard-S function, which is defined as follows: The parameters a, b and c obey the following restrictions: is the inflection point of the function, is the bandwidth, and for x = b holds. In fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter, the parameters AparAparAparAparaparapar and CparCparCparCparcparcpar are defined as follows: b is 。

注意

Note that for fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter, the RegionsRegionsRegionsRegionsregionsregions must lie completely within the previously defined domain.否则将抛出异常。

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

RegionsRegionsRegionsRegionsregionsregions (输入对象) region(-array) → object

Regions for which the fuzzy perimeter is to be calculated.

ImageImageImageImageimageimage (输入对象) singlechannelimage → object (byte)

Input image containing the fuzzy membership values.

AparAparAparAparaparapar (输入控制) integer → (integer)

Start of the fuzzy function.

默认值： 0

建议值： 0, 5, 10, 20, 50, 100

值范围： 0 ≤ Apar Apar Apar Apar apar apar ≤ 255 (lin)

最小增量： 1

建议增量： 5

CparCparCparCparcparcpar (输入控制) integer → (integer)

End of the fuzzy function.

默认值： 255

建议值： 50, 100, 150, 200, 220, 255

值范围： 0 ≤ Cpar Cpar Cpar Cpar cpar cpar ≤ 255 (lin)

最小增量： 1

建议增量： 5

限制： Apar <= Cpar

PerimeterPerimeterPerimeterPerimeterperimeterperimeter (输出控制) real(-array) → (real)

Fuzzy perimeter of a region.

示例（HDevelop）

* To find a Fuzzy Entropy from an Image
read_image(Image,'monkey')
fuzzy_perimeter(Trans,Trans,0,255,Per)

示例（C）

/* To find a Fuzzy Entropy from an Image */
read_image(&Image,"monkey");
fuzzy_perimeter(Trans,Trans,Apar,Bpar,&Per);

示例（HDevelop）

* To find a Fuzzy Entropy from an Image
read_image(Image,'monkey')
fuzzy_perimeter(Trans,Trans,0,255,Per)

示例（HDevelop）

* To find a Fuzzy Entropy from an Image
read_image(Image,'monkey')
fuzzy_perimeter(Trans,Trans,0,255,Per)

示例（HDevelop）

* To find a Fuzzy Entropy from an Image
read_image(Image,'monkey')
fuzzy_perimeter(Trans,Trans,0,255,Per)

结果

算子 fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter 在参数正确时返回值 2 ( H_MSG_TRUE )。否则将抛出异常。

另见

fuzzy_entropyfuzzy_entropyFuzzyEntropyFuzzyEntropyFuzzyEntropyfuzzy_entropy

参考文献

M.K. Kundu, S.K. Pal: “Automatic selection of object enhancement operator with quantitative justification based on fuzzy set theoretic measures”; Pattern Recognition Letters 11; 1990; pp. 811-829.

模块

基础

算子