Zynq平台嵌入式本地光谱分离微型高光谱仪研制

Development of Micro-hyper-spectrometer with Embedded Local Spectral Separation Based on Zynq Platform

高光谱图像数据量大,对数据传输带宽要求高,通常难以在结构紧凑的微型高光谱仪中实现实时调焦与视频流传输等功能。文中基于新型快照马赛克高光谱传图像感器,设计实现了一套嵌入式微型高光谱仪,在本地完成传感器的驱动和高光谱数据分离。单波段光谱图像数据经千兆以太网传输至上位机,从而大幅降低了对传输带宽的要求,大幅增强了调焦与光谱视频预览效果。实测结果显示,该系统高光谱图像传输帧频可达50帧/s,能够满足高时间分辨应用下的实时调焦与动态信息捕获的需求。

It is difficult to implement the functions such as real-time focusing and video streaming transmission in a compact micro-hyper-spectrometer,because of large amounts of hyperspectral image data and high bandwidth requirements for data transmission.A set of embedded micro-hyper-spectrometer based on the new hyperspectral mosaic snapshot imager was designed in the work.The image sensor driver and the spectral data separation were implemented on the spectrometer.Single-band spectral image data was transmitted to the host computer through the Gigabit Ethernet interface,thus the transmission bandwidth requirements reduced greatly.It dramatically improved focusing speed and video preview performance by using above method.The measured result shows that the hyperspectral image transmission frame rate of the system can reached 50FPS,which completely met the demand of real-time focusing and dynamic image capture in the high time-resolution applications.