基于FPGA的拼接式CMOS线阵相机系统设计

A Design of Mosaic Line Scan CMOS Camera Based on FPGA

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。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,系统在大视场下相比单相机在视场边缘具有更好的成像质量,可应用于多离散目标的检测。

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.