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分数阶傅里叶变换在数字水印中的一个应用，有文章和例程，初学者可以-Fractional Fourier Transform in Digital Watermarking an application, has articles and routines, beginners can

JAVA环境的安装提示与帮助-JAVA environment with the installation hints to help

聆听混沌的声音 　　本世纪70年代初，美国普林斯顿大学的生态学家R・May在研究昆虫群体繁殖规律时提出一个著名的模型： χ[n＋1]=k＊χ[n]＊(1－χ[n])-listen to the voices of the chaotic early 1970s, Princeton University ecologist R May groups in the study of insects breeding laws when a famous model : [n+1] = k* [n]* (1- [n ])

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模糊神经网络的方仿真与功能实现，以及模糊隶属寒舍的设置-Fuzzy neural network simulation and functional side realize, as well as the fuzzy membership settings my house

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VoIP技术及业务的研究1-VoIP technology and business of a

资源描述视网膜lvessels发挥进口特罗勒在诊断过程fretinopathy啊。准确的分割视网膜的病理分析是至关重要的。本文weproposeanewretinalvessel首先，aretinalvesselimageis methodbasedonlevelsetandregiongrowing分割。preprocessedbythecontrast-limitedadaptivehistogramequalizationanda2dgaborwaveletto提高船舶。然后，各向异性扩散滤波器是用来smooththeimageandpreservevessel边界。最后，theregiongrowingmethodandaregion basedactivecontourmodelwithlevelset实施areappliedtoextractretinalvessels，andtheirresultsarecombinedtoachievethe最终分割。comparisonsareconductedonthepubliclyavailabledriveandstaredatabasesusing三differentmeasurements。experimentalresultsshowthattheproposedmethodreachesanaverageof94.77 % % onthestaredatabase onthedrivedatabaseand95.09精度。