fuzzy_entropyfuzzy_entropyFuzzyEntropyFuzzyEntropyfuzzy_entropy (算子)

名称

fuzzy_entropyfuzzy_entropyFuzzyEntropyFuzzyEntropyfuzzy_entropy — 确定区域的模糊熵。

签名

fuzzy_entropy(Regions, Image : : Apar, Cpar : Entropy)

描述

fuzzy_entropyfuzzy_entropyFuzzyEntropyFuzzyEntropyFuzzyEntropyfuzzy_entropy calculates the fuzzy entropy of a fuzzy set. To do so, the image is regarded as a fuzzy set. The entropy then is a measure of how well the image approximates a white or black image. It is defined as follows: where MxN is the size of the image, and h(l) is the histogram of the image. Furthermore, Here, u(x(m,n)) is a fuzzy membership function defining the fuzzy set (see fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter). The same restrictions hold as in fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter。

注意

Note that for fuzzy_entropyfuzzy_entropyFuzzyEntropyFuzzyEntropyFuzzyEntropyfuzzy_entropy, 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 entropy 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

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

Fuzzy entropy of a region.

示例（HDevelop）

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

示例（C）

/* To find a Fuzzy Entropy from an Image */
read_image(&Image,'monkey');
fuzzy_entropy(Trans,Trans,0,255,&Entro);

示例（HDevelop）

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

示例（HDevelop）

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

示例（HDevelop）

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

结果

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

另见

fuzzy_perimeterfuzzy_perimeterFuzzyPerimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter

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