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基于FPGA的拼接式CMOS线阵相机系统设计
引用本文:夏湖培,苏新彦,刘培珍,刘 宾.基于FPGA的拼接式CMOS线阵相机系统设计[J].计算机测量与控制,2014,22(12).
作者姓名:夏湖培  苏新彦  刘培珍  刘 宾
作者单位:中北大学电子测试技术国家重点实验室,太原,030051
基金项目:国家自然基金项目,山西省自然科学基金项目
摘    要:针对单个线阵相机在大视场下传感器边缘失光的问题,提出了在保证分辨率的前提下使用多个相对较低像素的相机拼接,对视场进行分担的方法;设计了一种基于FPGA的拼接式CMOS线阵相机系统,系统整体像素为4 096Pixels,行频为2.5kHz;详细介绍了系统的工作原理、硬件构成和各芯片的程序设计,实现了基于FPGA的多相机图像实时校正算法,并将校正后的图像通过高速USB芯片传输到采集软件;实验结果表明,在视场较大的条件下同等像素的拼接式相机相比单相机在视场边缘具有更好的成像质量,且需要的物距更短,可应用于对多离散目标的检测。

关 键 词:大视场  线阵相机  拼接  图像校正
收稿时间:2014/4/21 0:00:00
修稿时间:2014/5/14 0:00:00

A Design of Mosaic Line Scan CMOS Camera Based on FPGA
SU Xin-yan,LIU Pei-zhen and LIU Bin.A Design of Mosaic Line Scan CMOS Camera Based on FPGA[J].Computer Measurement & Control,2014,22(12).
Authors:SU Xin-yan  LIU Pei-zhen and LIU Bin
Affiliation:State Key Laboratory for Electronic Testing Technology,North University of China,State Key Laboratory for Electronic Testing Technology,North University of China,State Key Laboratory for Electronic Testing Technology,North University of China,State Key Laboratory for Electronic Testing Technology,North University of China
Abstract:To solve the problem that single line scan camera loss of light in the edge of the sensor when the field of view is large, this paper designed a mosaic line scan CMOS camera system and proposed a solution of using multiple relatively low pixel cameras to share the field of view in order to reduce the single camera view angle. The structure of the system and the drive of the chips were introduced detailed .In addition,an algorithm of calibrating image based on FPGA was researched, and data was transported to the image acquisition software via a high-speed USB chip . Experimental results show that compared to a single camera , the system has a better image quality in a large field of view , and can be used to detect multiple discrete targets.
Keywords:large field of view  line scan camera  splicing  image correction
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