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Locating lost waterways through image registration of old and recent maps of Manila

机译:通过对马尼拉旧地图和新地图的图像定位来定位丢失的水道

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Floods are common problems in Metro Manila during the rainy season. This can be attributed to the area’s geographical features which have changed through time. This paper aims to locate changes that occurred in the water areas and identify lost waterways using past and present maps of Manila. Map image registration is performed to align the images and analyze their differences. Two algorithms are presented in this study, which differ in finding the scale and translation needed for alignment. After overlaying the old and recent maps, differences between the waterways are highlighted. Results of both algorithms show some lost waterways near Espana, Sampaloc and Quiapo which might be the cause of flooding in these areas nowadays. With this map alignment, one can possibly simulate the effect of current amounts of rainfall if it happened 100 years ago.
机译:在雨季,洪水是马尼拉大都会的普遍问题。这可以归因于该地区随时间变化的地理特征。本文旨在查找水域发生的变化,并使用马尼拉过去和现在的地图来识别丢失的水道。执行地图图像配准以对齐图像并分析其差异。这项研究提出了两种算法,它们在寻找对齐所需的比例和平移方面有所不同。覆盖旧地图和新地图后,将突出显示水道之间的差异。两种算法的结果均表明,西班牙,萨姆帕洛克和基阿波附近的水道有所损失,这可能是当今这些地区洪水的原因。借助这种地图对齐方式,如果100年前发生了降雨,则可以模拟当前降雨的影响。

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