中国光学
中國光學
중국광학
CHINESE JOURNAL OF OPTICS
2012年
1期
42-47
,共6页
李洪法%薛旭成%郭永飞%朱宏殷
李洪法%薛旭成%郭永飛%硃宏慇
리홍법%설욱성%곽영비%주굉은
双抽头CCD%图像整合%现场可编程门阵列%ModelSim软件
雙抽頭CCD%圖像整閤%現場可編程門陣列%ModelSim軟件
쌍추두CCD%도상정합%현장가편정문진렬%ModelSim연건
double-tap CCD%image conformity%Field Programmable Gate Array(FPGA)%ModelSim software
为了解决双抽头CCD输出图像顺序不一致的问题,提出了一种改进的RAM软件设计方法,并对其数据进行重新整合。首先,利用XILINX VIRTEX系列现场可编程门阵列(FPGA)的内部Block RAM构造形成双端口RAM。其次,利用双抽头CCD的第一个抽头数据在整合前后没有变化的特点,改进了传统的乒乓操作方法,实现了对整片CCD输出的整合。与传统的图像整合方法相比,该方法对硬件的资源占用率节省了25%。利用ModelSim软件对该方法进行仿真实验,验证了其正确性和有效性。该方法节约了硬件资源,降低了硬件成本,并已成功应用在实际工程项目中。
為瞭解決雙抽頭CCD輸齣圖像順序不一緻的問題,提齣瞭一種改進的RAM軟件設計方法,併對其數據進行重新整閤。首先,利用XILINX VIRTEX繫列現場可編程門陣列(FPGA)的內部Block RAM構造形成雙耑口RAM。其次,利用雙抽頭CCD的第一箇抽頭數據在整閤前後沒有變化的特點,改進瞭傳統的乒乓操作方法,實現瞭對整片CCD輸齣的整閤。與傳統的圖像整閤方法相比,該方法對硬件的資源佔用率節省瞭25%。利用ModelSim軟件對該方法進行倣真實驗,驗證瞭其正確性和有效性。該方法節約瞭硬件資源,降低瞭硬件成本,併已成功應用在實際工程項目中。
위료해결쌍추두CCD수출도상순서불일치적문제,제출료일충개진적RAM연건설계방법,병대기수거진행중신정합。수선,이용XILINX VIRTEX계렬현장가편정문진렬(FPGA)적내부Block RAM구조형성쌍단구RAM。기차,이용쌍추두CCD적제일개추두수거재정합전후몰유변화적특점,개진료전통적핑퐁조작방법,실현료대정편CCD수출적정합。여전통적도상정합방법상비,해방법대경건적자원점용솔절성료25%。이용ModelSim연건대해방법진행방진실험,험증료기정학성화유효성。해방법절약료경건자원,강저료경건성본,병이성공응용재실제공정항목중。
In order to modify the disaccord of output sequency of a double-tap Charge Coupled Device(CCD),an improved design method for software RAM is proposed,and the output of CCD is conformed by this method.Firstly,a dual-port RAM is constructed by using Block RAM of Xilinx Virtex series Field Programmable Gate Array(FPGA).Since the sequence of data from tap1 is the same as that to be conformed before,this paper comes up with an improved method based on the traditional Ping-Pang operation to conform the output data from the CCD.Comparing to the traditional Ping-Pang method,the resource consumption of designed software is greatly reduced by 25%.It is proved to be valid and accurate by the simulation result of ModelSim.The new method which has been applied in the project successfully can save hardware resources and reduce the hardware cost greatly.