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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Using structure‐from‐motion to create glacier DEMs and orthoimagery from historical terrestrial and oblique aerial imagery
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Using structure‐from‐motion to create glacier DEMs and orthoimagery from historical terrestrial and oblique aerial imagery

机译：使用结构 - 从历史陆地和倾斜空中图像创建冰川DEMS和矫形器

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Abstract > Increased resolution and availability of remote sensing products, and advancements in small‐scale aerial drone systems, allows observations of glacial changes at unprecedented levels of detail. Software developments, such as structure‐from‐motion (SfM), now allow users an easy and efficient method to generate three‐dimensional (3D) models and orthoimages from aerial or terrestrial datasets. While these advancements show promise for current and future glacier monitoring, many regions still suffer a lack of observations from earlier time periods. We report on the use of SfM to extract spatial information from various historic imagery sources. We focus on three geographic regions, the European Alps, high Arctic Norway and the Nepal Himalayas. We used terrestrial field photographs from 1896, high oblique aerial photographs from 1936 and aerial handheld photographs from 1978 to generate digital elevation models (DEMs) and orthophotos of the Rhone glacier, Br?ggerhalv?ya and the lower Khumbu glacier, respectively. Our analysis shows that applying SfM to historic imagery can generate high quality models using only ground control points. Limited camera/orientation information was largely reproduced using self‐calibrated model data. Using these data, we calculated mean ground sampling distances across each site which demonstrates the high potential resolution of resulting models. Vertical errors for our models are ±5.4?m, ±5.2?m and ±3.3?m. Differencing shows similar patterns of thinning at lower Rhone (European Alps) and Br?ggerhalv?ya (Norway) glaciers, which have mean thinning rates of 0.31?m a ?1 (1896–2010) to 0.86?m a ?1 (1936–2010) respectively. On these clean ice glaciers thinning is highest in the terminus region and decreasing up‐glacier. In contrast to these glaciers, uneven topography, exposed ice‐cliffs and debris cover on the Khumbu glacier create a highly variable spatial distribution of thinning. The mean thinning rate for the Khumbu study area was found to be 0.54?±?0.9?m a ?1 (1978–2015). Copyright ? 2017 John Wiley & Sons, Ltd. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract XMLNS =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <title type =“main”>抽象</ title> >增加了分辨率和遥感产品的可用性以及小规模空中无人机系统的进步，允许观察未持续的细节水平的冰川变化。 Software Modains（如Surfacture-From-Motion）（SFM），现在允许用户一种简单而有效的方法，可以从空中或地面数据集生成三维（3D）模型和OrthoImages。虽然这些进步显示了当前和未来冰川监测的承诺，但许多地区仍然缺乏早期的时间缺乏观察。我们报告使用SFM从各种历史图像来源中提取空间信息。我们专注于三个地理区域，欧洲阿尔卑斯山，高北极挪威和尼泊尔喜马拉雅山。我们从1936年从1936年和空中手持照片中使用了从1936年的高斜空的照片，从1978年从1978年开始产生数字高度模型（DEMS）和罗纳冰川的正轨，分别是罗讷冰川的正弦孔，分别是较低的Khumbu冰川。我们的分析表明，将SFM应用于历史图像，只能使用地面控制点产生高质量模型。有限的相机/方向信息主要使用自校准模型数据来复制。使用这些数据，我们计算了每个站点的平均接地采样距离，展示了所得模型的高潜在分辨率。我们模型的垂直误差为±5.4？m，±5.2？m和±3.3Ω。差异显示在罗讷（欧洲阿尔卑斯山）和Br？Ggerhalv？YA（挪威）冰川的类似模式，其平均稀释率为0.31Ω·mA α1</ sup>（1896-2010）至0.86？ ma ？1 </ sup>（1936-2010）。在这些清洁的冰川冰川中，在末端区域中更加稀释，并降低上升冰川。与这些冰川相比，不均匀的地形，暴露的冰峭壁和葡萄干冰川的碎片覆盖造成了高度变薄的空间分布。发现Khumbu研究区域的平均稀释率为0.54≤0.9≤0.9μma？1 </ sup>（1978-2015）。版权？ 2017年John Wiley＆amp; SONS，LTD。</ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-22319/'>《Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group》</a> <b style="margin: 0 2px;">|</b><span>2017年第14期</span><b style="margin: 0 2px;">|</b><span>共15页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mertes Jordan R.&option=202" target="_blank" rel="nofollow">Mertes Jordan R.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Gulley Jason D.&option=202" target="_blank" rel="nofollow">Gulley Jason D.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Benn Douglas I.&option=202" target="_blank" rel="nofollow">Benn Douglas I.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Thompson Sarah S.&option=202" target="_blank" rel="nofollow">Thompson Sarah S.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Nicholson Lindsey I.&option=202" target="_blank" rel="nofollow">Nicholson Lindsey I.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Geological and Mining Engineering and SciencesMichigan Technological UniversityHoughton MI USA;</p> <p>School of GeosciencesUniversity of South FloridaTampa FL USA;</p> <p>School of Geography and GeosciencesUniversity of St AndrewsSt Andrews UK;</p> <p>Institute of Atmospheric and Cryospheric SciencesUniversit?t InnsbruckInnsbruck Austria;</p> <p>Institute of Atmospheric and Cryospheric SciencesUniversit?t InnsbruckInnsbruck Austria;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=structure‐from‐motion&option=203" rel="nofollow">structure‐from‐motion;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=historic imagery&option=203" rel="nofollow">historic imagery;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Dem&option=203" rel="nofollow">Dem;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=glacier change&option=203" rel="nofollow">glacier change;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=long term&option=203" rel="nofollow">long term;</a> </p> <div class="translation"> 机译：结构从 - 动作;历史图像;DEM;冰川变化;长期; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li 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