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可量测航空影像连续立体模型构建技术与应用研究

Research and Application of Measurable Regional Stereo Model Based on Aerial Imagery Set

【作者】 孙晓峰

【导师】 李英成;

【作者基本信息】 中国测绘科学研究院 , 摄影测量与遥感, 2011, 硕士

【摘要】 在摄影测量数百年的发展历程中,先后经历了模拟摄影测量、解析摄影测量和数字摄影测量三个发展阶段,但基于人造立体视觉的“立体模型”一直是摄影测量学的重要支柱。在模拟与解析摄影测量时代,“立体模型”都是基于原始胶片的。进入数字摄影测量时代,“核线数字立体影像对”的概念给“立体模型”赋予了很多新特性,也带来了新的发展契机。但到目前为止,面对这种新变化,现阶段的“立体模型”主要是利用计算机对传统的像对模型进行了空间“模拟”,其相关的理论和应用研究相对滞后。本文结合“立体模型”在数字摄影测量阶段的新特性及其电子信息技术的新发展,推广了核线立体影像对的概念,通过构建一种无需DEM/DSM数据支持的区域立体连续模型,突破了传统立体模型只能局限在单一立体像对范围内的局限,实现了大范围的连续立体观测。为了客观评价连续立体模型的构建效果,本文从立体视觉效果与坐标反算精度两个层面对其精度进行了定性与定量分析。为了拓宽其应用范围,使摄影测量突破空间信息学科的局限,广泛的深入到其它领域,本文深入研究了基于连续立体模型的解译技术。主要包括基于连续立体模型的点位坐标、空间距离、地形坡度、区域面积、规则与不规则实体体积的量测,剖面自动提取,各种样式的点、线、面、文字注记等立体符号的标注等。同时,这些立体解译技术也适用于单独像对立体模型。

【Abstract】 Photogrammetry has developed for hundreds of years, which has gone through three periods as analogue photogrammetry, analytical photogrammetry and digital photogrammetry. But, the "stereo model" has been an important pillar of photogrammetry. In the period of simulation and analytical photogrammetry, "stereo model" is based on the original film. Into the period of digital photogrammetry, the concept of "digital epipolar image pairs" gives a lot of new features to it, and it also brings a new opportunity for development. But so far, facing this new change, "stereo model" in this stage is mainly a simulation to traditional one, the relevant theoretical and applied research is lagging behind.After analyse the new features of“stereo model”in digital photogrammetry and the new development of electronic information technology nowadays, the concept of "digital epipolar image pairs" is extended in this paper. By constructing a regional stereo model with original aerial imagery set(needless for DEM / DSM data), a wide range of continuous stereo observation was achieved. This regional stereo model break through the traditional model can only be limited to a single stereo pair. In order to evaluate its performance, stereo visual effects and coordinates calculate precision is used to test it. In order to broaden its application range, a series of interpretation techniques are researched based on it, which Including measurement of three-dimensional point coordinates, distance, terrain slope, regional area, regular and irregular spatial object volume; automatic extraction of profile; stereo label of various styles of point, line, surface, text notes and other three-dimensional symbols, and so on. At the same time, these stereo interpretation techniques are also applicable to traditional individual stereo model.

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