Image-based Digital Surface Model – BDOM (2017-2019)

Digital surface models (DOM) are digital, numerical models, reduced to a regular grid, in which heights and shapes of the earth’s surface including buildings and vegetation are mapped. Dom models represent the situation at the time of recording, i.e. the flight day. The detection times vary, e.g. at water level levels or surface vegetation, height differences within the surface model can occur. The dot grid width of the DOM 2017-2019 is 1 m. The data pool 2017-2019 fully covers the state area of the state of Brandenburg. The DOM product 2017-2019 is completed and will not continue. The DOM product itself has been replaced by a qualitatively improved mesh grid of 20 cm since 2020 and continues as the current BDOM under ‘Data of Geotopography’. The data is provided free of charge via automated procedures or by self-absorption. When using the data, the license terms must be observed.

数字表面模型（Digital Surface Model，DOM）是一类数字化数值模型，经简化后采用规则格网形式，可映射包含建筑物与植被在内的地球表面高程与形态。DOM模型反映的是数据采集时刻，即飞行当日的地表状态。数据采集时段存在差异，例如在水域或地表植被覆盖区域，该表面模型内部可能出现高程偏差。2017-2019版DOM的点格网间距为1米。2017-2019年的数据集完整覆盖勃兰登堡州（Brandenburg）的全域范围。2017-2019版DOM产品已完成开发，不再进行后续更新。自2020年起，该DOM产品已被分辨率为20厘米的高质量格网产品替代，并以"地形地貌数据"分类下的现行BDOM版本持续提供服务。该数据集可通过自动化流程或自助获取的方式免费提供。使用该数据集时，需遵守其许可条款。