基于FPGA的圖像實(shí)時(shí)加密系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)
[Abstract]:In the information age, many important information of countries, units and individuals exist in the form of digital graphics, images and videos. The storage and transmission of these image and video files inevitably face the danger of being stolen and attacked. Therefore, the research on encryption and decryption of image and video files is an important research direction in the field of information security and security. Countries all over the world have invested a great deal of energy in this field of theoretical research and system, equipment development. Encryption and decryption of information is a subject with a long history. In different historical periods, different theories and methods are needed for different encrypted data objects. This paper aims at real-time video data flow, considering the cost of design and implementation, synthetically analyzes the characteristics of video stream data and its demand for design resources, and uses a low-cost FPGA development board to realize the improved Arnold-Logistic mixed encryption and decryption algorithm. The real-time encryption system of video image is designed and verified by hardware demonstration. The main work of this paper is to analyze the structure of video transmission system. On this basis, the design of video encryption system is divided into three steps: the construction of video image through platform, the design of video image data stream encryption module. Each function module of the system and the simulation verification of the final system. The whole design work is based on a Altera Cyclone II EP2C5Q208C8N FPGA development board and its development environment. Video image through platform is mainly designed and implemented by Verilog hardware description language. Firstly, the internal register of CMOS image sensor OV7670 is configured by FPGA to output the VGA video image data stream whose pixel is 640x480, and then FPGA correctly captures the sent video image data and sends it to the SDRAM chip of the external 64MB to cache. Finally, the image data is extracted from the SDRAM and sent to the VGA interface driver module to drive the external display to display the real-time video image, which is convenient to verify the effect of the straight-through platform and the subsequent image processing. The encryption module of video image data is mainly implemented by model design. In the Simulink platform of Matlab, the standard library module of the DSP Builder toolbox is called to build the correct image encryption model, and then the DSP Builder model is converted into the VHDL hardware description language file by the Signal Compiler module, and the Quartus compilation and synthesis are started, and the layout and routing are started. Finally, the model script file of image encryption algorithm is generated. Finally, the encryption algorithm module is called in the project of building a good video image through platform to complete the design of the whole system. The simulation and verification work runs through every link of the whole design. Each module and the whole system need many repeated design, simulation verification, modification of the design work, and finally can get a stable performance, function to meet the design specifications of the system. In the design, the software simulation is mainly realized by Modelsim,Quartus II and Simulink, and the hardware simulation is realized by the on-line test of DSP Builder and the configuration of FPGA. By adopting the top-down design method, the system structure and function modules are divided reasonably, and each sub-module is realized, finally the whole system is built and implemented. Finally, real-time stream encryption is implemented on a Cyclone II chip for video images captured by CMOS image sensors.
【學(xué)位授予單位】:西安科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TN791;TP309.7
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 羅瑩,李晴;醫(yī)學(xué)圖像在臨床中的應(yīng)用及醫(yī)學(xué)圖像數(shù)據(jù)庫的檢索技術(shù)[J];中國體視學(xué)與圖像分析;2002年03期
2 黃斌,楊世洪,吳欽章;特大圖像快速瀏覽解決方案研究及實(shí)現(xiàn)[J];計(jì)算機(jī)應(yīng)用研究;2005年03期
3 郭兆穎;;圖像優(yōu)化 舍我其誰[J];個(gè)人電腦;2006年03期
4 尹京;方艷梅;;數(shù)碼翻拍圖像取證算法[J];中山大學(xué)學(xué)報(bào)(自然科學(xué)版);2011年06期
5 卜飛;;基于計(jì)算域和函數(shù)的圖像顯示方法[J];科技信息;2012年36期
6 唐聃;王曉京;;基于編碼理論的圖像秘密分享技術(shù)研究[J];計(jì)算機(jī)應(yīng)用與軟件;2013年09期
7 潘鳳萍,李春陽,王曉華;爐膛安全監(jiān)控系統(tǒng)圖像站[J];系統(tǒng)工程理論與實(shí)踐;1997年09期
8 陸宏偉;一個(gè)通用的圖像基類[J];電腦編程技巧與維護(hù);1999年10期
9 劉艷華;周寧;;圖像信息資源檢索技術(shù)的進(jìn)展研究[J];現(xiàn)代情報(bào);2006年01期
10 王雪峰;;一種基于注意力驅(qū)動(dòng)模型提取圖像顯著圖的方法[J];伊犁師范學(xué)院學(xué)報(bào)(自然科學(xué)版);2011年01期
相關(guān)會(huì)議論文 前10條
1 李艷君;李巖成;;GE9800 CT顯示屏無圖像的檢修[A];第十二屆全國臨床醫(yī)學(xué)影像學(xué)術(shù)會(huì)議、第四屆東北三省放射學(xué)術(shù)會(huì)議論文匯編[C];2002年
2 安貝貝;曾理;馬睿;;工業(yè)CT圖像裂紋的兩種測(cè)量方法研究與比較[A];2006年西南地區(qū)第九屆NDT學(xué)術(shù)年會(huì)暨2006年全國射線檢測(cè)新技術(shù)研討會(huì)論文集[C];2006年
3 尹光輝;易仕和;何霖;王春;姜宗林;;二維凹腔在超聲速流場(chǎng)中流動(dòng)圖像的初步實(shí)驗(yàn)研究[A];第十三屆全國激波與激波管學(xué)術(shù)會(huì)議論文集[C];2008年
4 杜高明;張多利;高明倫;耿羅鋒;候?qū)?;多核并行圖像顯示接口設(shè)計(jì)[A];2008’“先進(jìn)集成技術(shù)”院士論壇暨第二屆儀表、自動(dòng)化與先進(jìn)集成技術(shù)大會(huì)論文集[C];2008年
5 周琪;劉曉利;;圖像導(dǎo)引頭檢測(cè)裝置設(shè)計(jì)[A];第九屆全國信息獲取與處理學(xué)術(shù)會(huì)議論文集Ⅰ[C];2011年
6 張俊;徐星雄;顧亞平;曹學(xué)高;;圖像聲納在鍋爐煤渣探測(cè)中的研究[A];第二屆全國信息獲取與處理學(xué)術(shù)會(huì)議論文集[C];2004年
7 楊振傳;;數(shù)字減影血管造影設(shè)備的使用與維護(hù)[A];中華醫(yī)學(xué)會(huì)醫(yī)學(xué)工程學(xué)分會(huì)第二次醫(yī)學(xué)影像設(shè)備應(yīng)用技術(shù)研討會(huì)論文集[C];2001年
8 李萬龍;鄒寬城;鄭山紅;侯秀萍;;PACS系統(tǒng)及應(yīng)用研究[A];“加入WTO和科學(xué)技術(shù)與吉林經(jīng)濟(jì)發(fā)展——機(jī)遇·挑戰(zhàn)·責(zé)任”吉林省第二屆科學(xué)技術(shù)學(xué)術(shù)年會(huì)論文集(上)[C];2002年
9 董秀珍;付峰;史學(xué)濤;尤富生;劉銳崗;;實(shí)時(shí)動(dòng)態(tài)電阻抗圖像監(jiān)護(hù)技術(shù)初步研究[A];第十屆中國科協(xié)年會(huì)論文集(三)[C];2008年
10 張東升;;Windows系統(tǒng)下圖像顏色管理的實(shí)現(xiàn)[A];中國新聞技術(shù)工作者聯(lián)合會(huì)五屆一次理事會(huì)暨學(xué)術(shù)年會(huì)論文集(上篇)[C];2009年
相關(guān)重要報(bào)紙文章 前10條
1 阿勝 編譯;相信你的直覺[N];醫(yī)藥經(jīng)濟(jì)報(bào);2009年
2 遼寧 凌麗;調(diào)整彩電兩個(gè)“中周”的基本經(jīng)驗(yàn)[N];電子報(bào);2008年
3 中國人民解放軍總醫(yī)院 劉海一;PACS眾口難調(diào)[N];計(jì)算機(jī)世界;2003年
4 電腦虎;給你的MM美美容[N];中國電腦教育報(bào);2004年
5 記者 逸舟/北京;美光預(yù)測(cè) CMOS將取代CCD技術(shù)[N];電子資訊時(shí)報(bào);2004年
6 山東省立醫(yī)院 張喜雨 山東省醫(yī)學(xué)影像學(xué)研究所 王衛(wèi)鵬;讓醫(yī)療資源不再有城鄉(xiāng)差異[N];計(jì)算機(jī)世界;2005年
7 山東 李金成;長虹LT2012型液晶彩電故障檢修一例[N];電子報(bào);2009年
8 安徽 云飛;VB中圖像顯示特效五例[N];電腦報(bào);2001年
9 ;圖像、色彩表現(xiàn)真不錯(cuò)[N];中國計(jì)算機(jī)報(bào);2002年
10 特約撰稿人 Solon;打造個(gè)性化BIOS[N];電腦報(bào);2001年
相關(guān)博士學(xué)位論文 前7條
1 閆雪虎;漸進(jìn)式圖像秘密分享關(guān)鍵技術(shù)研究[D];哈爾濱工業(yè)大學(xué);2015年
2 宋顯華;量子圖像安全關(guān)鍵技術(shù)研究[D];哈爾濱工業(yè)大學(xué);2015年
3 滕琳;混沌理論在憶阻器電路及圖像安全中的應(yīng)用研究[D];大連理工大學(xué);2016年
4 李鵬;圖像秘密共享方法研究[D];哈爾濱工業(yè)大學(xué);2012年
5 侯剛;基于內(nèi)容的圖像檢索中特征表示與檢索策略研究[D];吉林大學(xué);2014年
6 許向陽;乳腺鉬靶圖像中腫塊檢測(cè)方法研究[D];華中科技大學(xué);2010年
7 賈Z,
本文編號(hào):2220354
本文鏈接:http://sikaile.net/kejilunwen/dianzigongchenglunwen/2220354.html