【摘要】 根据数字近景摄影测量的原理和方法,使用非量测相机拍摄微尺度模型立体像对,采用数字图像影像匹配技术量测像片坐标,建立三维立体模型,自动生成模型表面形态变化图.在河床演变趋势和航道整治微尺度模型试验中,该方法成功地取得了长江河床模型试验镇江段河床表面形态变化的大量数据,对分析相关的变化规律起到了积极作用.分析表明,数字近景摄影测量技术能够满足河床演变模型试验的研究需求.更多还原

【Abstract】 According to the mechanism of digital close-range photogrammetry,a 3D stereo model was developed by use of the non-metric camera to take the stereoscopic pair of microscale model and the digital image matching technology to obtain the image coordinates,and then the contour map of model surface deformation was automatically drawn.With this method,a great number of data about river bed surface deformation of Zhengjiang section were obtained in microscale model test on the Yangtze River bed,which are effective for analysis of relevant laws.Analysis shows that the digital close-range photogrammetry can meet the requirement of model tests on river bed evolution.更多还原