本文選題：立體攝影　切入點：海狼　出處：《物理學報》2017年05期

【摘要】：由于在海面上布設控制點較為困難,本文發(fā)展了一種無需海面控制點的立體攝影物理模型.該模型依次通過相機固有參數(shù)標定、相對定向和基于平均海面的絕對定向三個環(huán)節(jié)實現(xiàn),文中給出了各個環(huán)節(jié)的控制方程和具體算法.利用室內實驗時拍攝的一個影像對,將共面方程和距離方程聯(lián)立構成閉合方程組,實現(xiàn)相機固有參數(shù)的標定;利用外海測量時拍攝的一個影像對,采用共面方程實現(xiàn)相對定向參數(shù)的標定;利用外海測量時拍攝的一個影像對序列,在左相機坐標系中通過影像匹配確定平均海面,建立特定的物方坐標系,并實現(xiàn)絕對定向.室內實驗檢驗了固有參數(shù)控制方程的收斂性并表明定標精度較高;外海實驗成功地構建了海面高度場,這表明本文提出的相對定向和絕對定向方法是可行的.該模型只需將兩個相機按一定方位架設在平臺上即可進行海浪測量,免去了繁瑣的海面控制點布設過程,降低了工作難度和成本,有利于立體攝影海浪測量技術的推廣和應用.
[Abstract]:Because it is difficult to lay control points on the sea surface, this paper develops a stereo photographic physical model without the sea surface control points. The model is calibrated by the inherent parameters of the camera in turn. Relative orientation and absolute orientation based on average sea surface are realized. The control equations and specific algorithms of each link are given in this paper. The coplanar equation and the distance equation are combined to form the closed equations to calibrate the intrinsic parameters of the camera, and to calibrate the relative directional parameters by using a pair of images taken in the offshore measurement, and the coplanar equation is used to calibrate the relative directional parameters. Using an image pair sequence taken in offshore measurement, the mean sea surface is determined by image matching in the left camera coordinate system, and a specific object square coordinate system is established. The convergence of the inherent parameter control equation is verified and the calibration accuracy is high. The sea surface height field is successfully constructed by the offshore experiment. This shows that the relative and absolute orientation methods proposed in this paper are feasible. In this model, only two cameras can be set up on the platform according to a certain position to carry out the wave survey, thus eliminating the cumbersome process of setting up the control points of the sea surface. It reduces the working difficulty and cost, and is beneficial to the popularization and application of stereo photogrammetric wave measurement technology.
【作者單位】： 中國海洋大學海洋與大氣學院;國家海洋局第一海洋研究所海洋環(huán)境與數(shù)值模擬研究室海洋環(huán)境科學與數(shù)值模擬國家海洋局重點實驗室;青島海洋科學與技術國家實驗室區(qū)域海洋動力學與數(shù)值模擬功能實驗室;
【基金】：國家自然科學基金委員會-山東省人民政府聯(lián)合資助海洋科學研究中心項目(批準號:U1406404) 國家自然科學基金青年基金(批準號:41506041) 國家海洋局第一海洋研究所基本科研業(yè)務費專項基金(批準號:GY02-2012T01)資助的課題~~
【分類號】：TB863
，

本文編號：1686656