简介：

简介：

简介：机读护照系统中光学机械参数对系统的影响陈毓昆一前言在护照阅读机中，为了实现对护照上特定字符进行识别，通常采用光电接收系统相对字符移动扫描的方法。这种方法基于光学成象的原理，将字符依次成象在线阵ＣＣＤ芯片靶面上，然后将光信号转换成电信号，通过电路及软件...

简介：本文论述了利用图像处理技术矫正变形痕迹的方法。同时，给出了一种简单、易行，并且能够满足公安实践需要的矫正变形痕迹的方法，为基层公安技术工作者提供了一个切实可行的技术手段。

简介：OnNov.24,2003,ProfessorPengKunchi,DiredoroftheInstituteofOptoelectronics,ShanxiUniversity,waselectedamemberofChineseAcademyofScience.PengKunchi'scontributionliesinpushingthedomesticresearchonquantumopticstothefrontieroftheworld:thegenerationofnon-classicalstatesoflightbythesamedevice;themeasurementofveryweaksignalsbyusingnon-classicallightsources;andthedesignofsingle-frequencyall-solid-stategreenlaser.Inrecentyears,hislaboratoryhasundertaken21researchprojectsgivenbythenationalnaturalsciencefoundation,aswellas54otherfoundationprojeds,with11winningministerialorprovincialcitations.Additionallyhehas377researchpaperspublishedinprominentdomesticandforeignjournalsandperiodicalsorpresentedatinternationalconferences,someofhisresearchestransformedintohightechproducts.