Application of topographic elevation data generated by remote sensing approaches to flood inundation analysis model

Assessment of the influence of DTM quality on dam rupture simulation processes

“…The concepts used can be better studied. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] The quality parameter adopted was the Cartographic Accuracy Standard for Digital Cartographic Products CAS-DCP (PEC-PCD), which establishes 4 classes for framing geospatial data, considering the scale of the data. To do so, it is necessary that 90% of the sample values present an error below the value stipulated in the CAS-DCP (PEC-PCD) and that the altimetric variation between data under analysis and reference data present values less than or equal to the Maximum Error -ME and the Standard Error -SE (EP).…”

“…Considering these aspects, quality control of the DTM for each simulation scenario was carried out by adapting the Brazilian standard, as discussed in detail, [13][14][15][16] which is based on the control method positional quality of digital maps. 17 It is also worth highlighting, in terms of the state of the art of quality control specific to DTMs, several reference works, such as the work carried out, 18 where the authors analyze the topic over the last three decades; 19 which addresses the perspectives and estimates of needs in terms of quality of DTMs through a study with users; 20 where comparison criteria are sought for the various global DTMs, taking into account the needs of users; 21 a study where the authors, based on aspects of quality control of classes derived from the DTM, analyze the quality of the slope; 22 where the authors study the state of the art of DTM generation using a deep learning process and also analyzing the final quality of the generated DTM; 23 where the authors used quasi-spline interpolation based on the Bernstein-Bézier coefficient to generate DTM and evaluated the final accuracy; 24 apply the buffer method to verify the elevation accuracy of the DTM; 25 evaluate the results generated by orbital DTMs for flood analysis and evaluate the coherence of the simulation performed.…”