一种基于以太网的高速图像采集与传输系统的设计
发布时间：2018-12-18 07:22
【摘要】：自1969年CMOS图像传感器和1970年CCD图像传感器出现以来,图像采集与传输技术被越来越广泛的应用于民用、工业生产、国防以及科研等领域,尤其是在国防领域,随着对图像实时性和精度需求的不断提高以及成像技术的不断发展,使得采集图像的数据量变得十分的庞大,这对高速图像的采集与传输能力提出了更高的要求。因此,如何对图像数据的实时采集、存储和快速的传输是解决这一问题的有效手段。本文以解决图像数据的实时性问题为中心,对图像数据的存储与传输进行讨论,并对几种图像数据的存储与传输进行比较,最终得出最优的解决方案。本文得出解决图像实时性问题的方法如下：1.利用FPGA内部的RAM资源对所采集的图像数据进行循环存储；2.在考虑了传输效率与实时性问题之后,对所采集的数据采取循环读取并传输,避免读取一帧传输一帧的传统传输模式所带来的最大延时问题；3.由于本文要解决的是图像数据的快速传输和实时性问题,传输错误(接收错误或接收不到数据)的数据将是过期而无效的,因此,过期的数据将被丢弃；4.以太网的UDP传输协议能够满足本文对图像数据快速传输的需求,所以本文采用以太网的UDP包格式对图像数据进行快速传输。基于以上的解决措施,本文通过仿真实验以及工程样机的运行情况,给出了上述解决措施的有效性。
[Abstract]:Since the appearance of CMOS image sensor in 1969 and CCD image sensor in 1970, image acquisition and transmission technology has been used more and more widely in civil, industrial production, national defense and scientific research, especially in the field of national defense. With the increasing demand for real-time and precision of images and the continuous development of imaging technology, the amount of data collected becomes very large, which puts forward higher requirements for the ability of high-speed image acquisition and transmission. Therefore, how to collect, store and transmit image data in real time is an effective method to solve this problem. This paper focuses on solving the real-time problem of image data, discusses the storage and transmission of image data, compares several kinds of image data storage and transmission, and finally obtains the best solution. The methods to solve the real-time problem are as follows: 1. Make use of the RAM resource in FPGA to store the collected image data. 2. After considering the problem of transmission efficiency and real-time, the data collected is read and transmitted circularly to avoid the maximum delay caused by the traditional transmission mode of reading one frame and one frame; 3. Because the problem of fast transmission and real-time of image data is to be solved in this paper, the data of transmission error (receiving error or not receiving data) will be expired and invalid, so the expired data will be discarded; 4. The UDP protocol of Ethernet can meet the need of fast image data transmission in this paper, so this paper adopts the UDP packet format of Ethernet to transmit image data quickly. Based on the above measures, the effectiveness of the above measures is given through the simulation experiments and the operation of the engineering prototype.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.11
本文编号：2385551
[Abstract]:Since the appearance of CMOS image sensor in 1969 and CCD image sensor in 1970, image acquisition and transmission technology has been used more and more widely in civil, industrial production, national defense and scientific research, especially in the field of national defense. With the increasing demand for real-time and precision of images and the continuous development of imaging technology, the amount of data collected becomes very large, which puts forward higher requirements for the ability of high-speed image acquisition and transmission. Therefore, how to collect, store and transmit image data in real time is an effective method to solve this problem. This paper focuses on solving the real-time problem of image data, discusses the storage and transmission of image data, compares several kinds of image data storage and transmission, and finally obtains the best solution. The methods to solve the real-time problem are as follows: 1. Make use of the RAM resource in FPGA to store the collected image data. 2. After considering the problem of transmission efficiency and real-time, the data collected is read and transmitted circularly to avoid the maximum delay caused by the traditional transmission mode of reading one frame and one frame; 3. Because the problem of fast transmission and real-time of image data is to be solved in this paper, the data of transmission error (receiving error or not receiving data) will be expired and invalid, so the expired data will be discarded; 4. The UDP protocol of Ethernet can meet the need of fast image data transmission in this paper, so this paper adopts the UDP packet format of Ethernet to transmit image data quickly. Based on the above measures, the effectiveness of the above measures is given through the simulation experiments and the operation of the engineering prototype.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.11
【参考文献】
相关硕士学位论文 前1条
1 廖慧明;基于嵌入式Linux的图像采集与无线传输的研究[D];西华大学;2007年
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