Study On Medical Image Enhancement Technique Based On Fuzzy Math

Medical images generally have the characteristic of low resolution and largenoise．In addition，in MR imaging and low-doses of CT reconstruction，the existenceof the artifact is also a big problem which harm the medical image．These factors canmake lesions and background fuzzy failure，which affect the doctor to the judge thelesion．In addition，the images also has some fuzzy judgment．Therefore，the use offuzzy mathematical theory to deal with medical image is reasonable．This paper firstintroduces the traditional enhancement algorithm of digital images，and brieflyintroduces the disadvantages of the traditional enhancement algorithm in medicalimage processing．Therefore，this paper expounds the theory of fuzzy mathematicsfoundation and the typical fuzzy enhancement algorithm，Such as Pal—King algorithm．Through the existing fuzzy enhancement algorithm，analyzes the existing problemsand improved it．In order to enhance the texture and the edge information of medical image，thispaper introduces generalized fuzzy operator．and raise the fuzzy operator which basedon the generalized nonlinear filters，do local contrast enhancement in the airspace formedical image．This method use the discrete fuzzy logic theory,improve the contrast0f the medical image，at the same time inhibit the noise suppression，overcome the defects that linear the sharpen membrane technology of noise in sensitive，and receivea satisfactory effect Compared with other algorithm．The algorithm obviouslyimproving enhanced effect of the sharpen mask membrane To different imageprocessing ofthe results also proved this point．Based on the analysis of fuzzy theory，this paper raise image enhancementtechnology based on the maximum entropy．The algorithm using the maximumentropy principle to adaptively decide the parameters of the membership functions，and then ensure membership functions，put image domain mapped tO the fuzzy field，and design the method of contrast enhancement in fuzzy field，thus making aimprovement of the fuzzy denoising algorithm and image contrast enhancementalgorithm which based on the largest fuzzy entropy．Finally,MATLAB software platform was used tO achieve the image fuzzyenhancement algorithms proposed in this pape~In the last of this paper,the fuzzyenhancement algorithms were summarized and combined with the inadequacies of theprospect for future work．...