【摘要】：自1969年CMOS圖像傳感器和1970年CCD圖像傳感器出現(xiàn)以來(lái),圖像采集與傳輸技術(shù)被越來(lái)越廣泛的應(yīng)用于民用、工業(yè)生產(chǎn)、國(guó)防以及科研等領(lǐng)域,尤其是在國(guó)防領(lǐng)域,隨著對(duì)圖像實(shí)時(shí)性和精度需求的不斷提高以及成像技術(shù)的不斷發(fā)展,使得采集圖像的數(shù)據(jù)量變得十分的龐大,這對(duì)高速圖像的采集與傳輸能力提出了更高的要求。因此,如何對(duì)圖像數(shù)據(jù)的實(shí)時(shí)采集、存儲(chǔ)和快速的傳輸是解決這一問(wèn)題的有效手段。本文以解決圖像數(shù)據(jù)的實(shí)時(shí)性問(wèn)題為中心,對(duì)圖像數(shù)據(jù)的存儲(chǔ)與傳輸進(jìn)行討論,并對(duì)幾種圖像數(shù)據(jù)的存儲(chǔ)與傳輸進(jìn)行比較,最終得出最優(yōu)的解決方案。本文得出解決圖像實(shí)時(shí)性問(wèn)題的方法如下：1.利用FPGA內(nèi)部的RAM資源對(duì)所采集的圖像數(shù)據(jù)進(jìn)行循環(huán)存儲(chǔ)；2.在考慮了傳輸效率與實(shí)時(shí)性問(wèn)題之后,對(duì)所采集的數(shù)據(jù)采取循環(huán)讀取并傳輸,避免讀取一幀傳輸一幀的傳統(tǒng)傳輸模式所帶來(lái)的最大延時(shí)問(wèn)題；3.由于本文要解決的是圖像數(shù)據(jù)的快速傳輸和實(shí)時(shí)性問(wèn)題,傳輸錯(cuò)誤(接收錯(cuò)誤或接收不到數(shù)據(jù))的數(shù)據(jù)將是過(guò)期而無(wú)效的,因此,過(guò)期的數(shù)據(jù)將被丟棄；4.以太網(wǎng)的UDP傳輸協(xié)議能夠滿(mǎn)足本文對(duì)圖像數(shù)據(jù)快速傳輸?shù)男枨?所以本文采用以太網(wǎng)的UDP包格式對(duì)圖像數(shù)據(jù)進(jìn)行快速傳輸�；谝陨系慕鉀Q措施,本文通過(guò)仿真實(shí)驗(yàn)以及工程樣機(jī)的運(yùn)行情況,給出了上述解決措施的有效性。
[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.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TP393.11

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本文編號(hào)：2385551