本文選題：線陣CCD旋轉(zhuǎn)掃描 + 圖像重建　； 參考：《南京理工大學(xué)》2017年碩士論文

【摘要】：線陣CCD旋轉(zhuǎn)掃描是實(shí)現(xiàn)高速成像和目標(biāo)探測(cè)的有效手段,本項(xiàng)目組針對(duì)低空成像的需要研發(fā)了一種新型的線陣CCD旋轉(zhuǎn)掃描成像硬件系統(tǒng)。本論文以該硬件成像系統(tǒng)為基礎(chǔ),研究了線陣CCD旋轉(zhuǎn)掃描的圖像重建和目標(biāo)檢測(cè)識(shí)別問(wèn)題。本文在深入資料調(diào)研的基礎(chǔ)上,根據(jù)線陣CCD旋轉(zhuǎn)掃描成像系統(tǒng)的針孔成像模型,建立了真實(shí)場(chǎng)景圖像的重建模型,分析了視場(chǎng)角、轉(zhuǎn)速、采樣頻率、線陣CCD有效像元數(shù)等系統(tǒng)參數(shù)對(duì)成像結(jié)果的影響,得到了系統(tǒng)參數(shù)的最佳匹配條件,為硬件系統(tǒng)的優(yōu)化設(shè)計(jì)提供了理論基礎(chǔ)。其次,利用DSP芯片的DMA技術(shù)和USB2.0接口技術(shù),結(jié)合驅(qū)動(dòng)程序開(kāi)發(fā)了數(shù)據(jù)傳輸控制模塊,實(shí)現(xiàn)了≥5.7MB/s的數(shù)據(jù)傳輸速率,解決了該裝置Flash存儲(chǔ)器與PC之間數(shù)據(jù)傳輸速率太慢的問(wèn)題;采用內(nèi)存映射文件技術(shù),實(shí)現(xiàn)了掃描序列圖像的加載、動(dòng)態(tài)顯示;利用序列圖像中靜止背景的周期性,通過(guò)圖像一維投影的自相關(guān)運(yùn)算,解決了線陣CCD每轉(zhuǎn)采樣數(shù)的快速準(zhǔn)確計(jì)算問(wèn)題,并開(kāi)發(fā)了視覺(jué)坐標(biāo)系下的圖像重建和顯示模塊�；趫D像分割技術(shù)和運(yùn)動(dòng)目標(biāo)檢測(cè)技術(shù)確定了重建圖像中目標(biāo)可能存在的區(qū)域,并對(duì)提取區(qū)域進(jìn)行了基于圖像模板匹配的目標(biāo)識(shí)別,可快速準(zhǔn)確的識(shí)別出目標(biāo)。此外,通過(guò)研究發(fā)現(xiàn),分水嶺分割算法對(duì)重建圖像具有較好的分割效果,基于混合高斯模型的背景差分法能夠檢測(cè)出復(fù)雜背景中的運(yùn)動(dòng)目標(biāo),基于灰度的圖像模板匹配能夠準(zhǔn)確識(shí)別目標(biāo)。
[Abstract]:Linear CCD rotation scanning is an effective method to realize high speed imaging and target detection. A new linear CCD rotating scanning imaging hardware system is developed to meet the needs of low altitude imaging.Based on the hardware imaging system, the image reconstruction and target detection and recognition of linear CCD rotating scanning are studied in this paper.Based on the deep investigation of the data and the pinhole imaging model of the linear CCD rotating scanning imaging system, the reconstruction model of the real scene image is established, and the angle of view, the rotation speed, the sampling frequency are analyzed.The influence of system parameters such as the effective pixel number of linear CCD on the imaging results is obtained, and the optimal matching condition of the system parameters is obtained, which provides a theoretical basis for the optimal design of the hardware system.Secondly, using the DMA technology of DSP chip and USB2.0 interface technology, the data transmission control module is developed in combination with the driver, which realizes the data transmission rate of 鈮，

本文編號(hào)：1741647