【摘要】：雙目立體視覺理論提出了一種由二維影像恢復(fù)場(chǎng)景三維信息的解決方案，是當(dāng)前三維重建領(lǐng)域的研究熱點(diǎn)。基于此本文以雙目立體視覺理論為基礎(chǔ)，以日常生活中的數(shù)碼相機(jī)為工具，建立雙目立體視覺三維重建系統(tǒng)，并對(duì)系統(tǒng)中的立體匹配、相機(jī)標(biāo)定、三維重構(gòu)等組成部分進(jìn)行詳細(xì)的探討和研究。主要完成以下工作： (1)影像預(yù)處理：采用自適應(yīng)中值濾波和Wallis銳化分別對(duì)立體像對(duì)進(jìn)行預(yù)處理，目的是消除噪聲干擾、增強(qiáng)影像邊緣及細(xì)節(jié)信息。 (2)立體匹配：在SIFT算法的基礎(chǔ)上，，結(jié)合單應(yīng)矩陣與極線雙重約束條件進(jìn)行約束匹配，并利用RANSAC算法消除誤匹配，實(shí)現(xiàn)了一種由粗到精的立體匹配方法，提高了匹配的速度及精度。 (3)相機(jī)標(biāo)定：采用張正友平面標(biāo)定法，在標(biāo)定的過程中結(jié)合Harris角點(diǎn)檢測(cè)法與二次曲面擬合法提取棋盤格模板角點(diǎn)的亞像素級(jí)坐標(biāo)，確定相機(jī)的內(nèi)參數(shù)。 (4)三維重建：利用立體匹配結(jié)果以及相機(jī)標(biāo)定獲得的內(nèi)外參數(shù)，依據(jù)SFM原理計(jì)算出匹配點(diǎn)的三維坐標(biāo)，并且提出一種坐標(biāo)比較法驗(yàn)證三維坐標(biāo)的精度，進(jìn)一步確定方案的可行性。 各章節(jié)的實(shí)驗(yàn)結(jié)果表明：每個(gè)組成部分都能到達(dá)預(yù)期的效果，整個(gè)系統(tǒng)能夠快速獲取精度較高的空間點(diǎn)的三維信息，有力的證明本文提出方法的可行性，為數(shù)碼相機(jī)擁有率不斷提高的普通用戶們提供一種基于數(shù)碼照片就能恢復(fù)出空間景物三維信息的新的解決方法，也為推動(dòng)數(shù)字城市建設(shè)等需求三維模型領(lǐng)域提供了另一種參考方案！
[Abstract]:Binocular stereo vision theory proposes a solution to restore 3D information from 2D images, which is a hot research topic in the field of 3D reconstruction. Based on the binocular stereo vision theory and the digital camera in daily life, this paper sets up a binocular stereo vision 3D reconstruction system, and calibrates the stereo matching and camera in the system. Three-dimensional reconstruction and other components are discussed and studied in detail. The main works are as follows: (1) Image preprocessing: adaptive median filter and Wallis sharpening are used to preprocess stereo image pair respectively, in order to eliminate noise interference, Enhance image edge and detail information. (2) Stereo matching: on the basis of SIFT algorithm, combining monoclinic matrix with polar line double constraint condition to perform constraint matching, and using RANSAC algorithm to eliminate mismatch, A stereo matching method from coarse to fine is realized, and the matching speed and precision are improved. (3) camera calibration: using Zhang Zhengyou plane calibration method, In the process of calibration, the sub-pixel coordinates of the chessboard template corner are extracted by using Harris corner detection method and Quadric surface fitting method. (4) 3D reconstruction: based on the results of stereo matching and the internal and external parameters of camera calibration, the 3D coordinates of matching points are calculated according to SFM principle. A coordinate comparison method is proposed to verify the accuracy of the three-dimensional coordinate and to determine the feasibility of the scheme. The experimental results of each chapter show that each component can achieve the desired effect, and the whole system can quickly obtain the three-dimensional information of the higher precision spatial points, which proves the feasibility of the method proposed in this paper. To provide a new solution for ordinary users, whose digital camera ownership rate is increasing, which can restore 3D information of spatial scene based on digital photos. Also for the promotion of digital city construction and other requirements of three-dimensional model areas to provide another reference scheme!
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P234

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