Fuzzy Image Enhancement Method based on a New Intensifier Operator

Abstract

In recent years, fuzzy image enhancement methods have been widely applied in image enhancement, which generally consists of three steps: fuzzification, modify membership(using intensifier (INT) operator), and defuzzification. This paper proposed a new INT operator used in fuzzy image enhancement. The INT operator is adjustable for different test images. The image enhancement method is as follows, firstly, calculate the image threshold (T ) using the OTSU method. Secondly, calculate pivotal point p corresponding to T , and find the corresponding INT operator function. Finally, use the INT operator in fuzzy Image Enhancement. The INT operator is used multiple times in the image processing process to obtain multiple result images. Comparative experiments show that the proposed new INT operator has better image enhancement effect when INT operator is applied at the same number of times. On the other hand, more intermediate process result images can also be obtained through the proposed new INT operator. More result images can provide material resources for the subsequent image processing.

Fuzzy Contrast Enhancement Techniques Using Rule-Based System and Intensification Operator

“…In 2023, Yang et al, [6] proposed an adjustable INT operator that has greater flexibility in enhancing images. This operator includes a parameter 'k' that is related to the image pixel's local gradient, providing adaptability to different image contexts.…”

“…In 2022, Yang et al, [7] introduced fuzzy method by using an improved fuzzy c-means clustering. In the same year, Yang et al, [8] applied a new intensifier operator to enhance fuzzy images. An application on contrast improvement by using advanced fuzzy technique on Flat EEG images was presented by Zenian et al, [9].…”

An Image Enhancement Method Using Nonlinear Function

“…The commonly used gray transformation method are composed by direct stretching, quadratic function, sine function, complex function, and other nonlinear functions [12][13][14][15][16][17][18][19][20]. Fuzzy set has been applied effectively in image enhancement [21][22][23][24][25][26][27]. Image enhancement is more and more widely used in various fields.…”