Abstract
Abstract. Digital Elevation Model (DEM) data as a representation of surface topography is highly demanded for use in spatial analysis and modelling. Aimed to that issue many methods of acquisition data and process it are developed, from traditional surveying until modern technology like LIDAR. On the other hands, in a past four year the development of Unamend Aerial System (UAS) aimed to Geomatic bring us the possibility to acquire data about surface by non-metric digital camera on board in a short time with good quality for some analysis. Data collectors have attracted tremendous attention on UAS due to possibility of the determination of volume changes over time, monitoring of the breakwaters, hydrological modelling including flood simulation, drainage networks, among others whose support in DEM for proper analysis. The DEM quality is considered as a combination of DEM accuracy and DEM suitability so; this paper is aimed to analyse the quality of the DEM from non-metric digital camera on UAS compared with a DEM from LIDAR corresponding to same geographic space covering 4 km2 in Artemisa province, Cuba. This area is in a frame of urban planning whose need to know the topographic characteristics in order to analyse hydrology behaviour and decide the best place for make roads, building and so on. Base on LIDAR technology is still more accurate method, it offer us a pattern for test DEM from non-metric digital camera on UAS, whose are much more flexible and bring a solution for many applications whose needs DEM of detail.
Highlights
Nowadays exist an increasing demand of Digital Elevation Model (DEM) data as a representation of surface topography for use in spatial analysis and modelling to support many political and environmental stakeholders
While DEM accuracy refers to the fact how representative the DEM is compared to the real landscape, DEM suitability refers to how suitable the DEM is for certain application or model (Bonk, 2007)
The DEM obtained from Light Detection and Ranging (LIDAR) technology offers a number of significant advantages emphasizing in accuracy
Summary
Nowadays exist an increasing demand of Digital Elevation Model (DEM) data as a representation of surface topography for use in spatial analysis and modelling to support many political and environmental stakeholders. In a past four year the development of Unamend Aerial System aimed to Geomatic bring us the possibility to acquire data about surface topography by nonmetric digital camera on board in short time with good quality for spatial analysis and environmental modelling. How this data are good enough and for whish propose it can be used is an interesting task to research. The quality of the DEM generation depends on several factors such as overlapping, flight altitude, camera resolution, etc Variations in these parameters affect the final accuracy of the model obtained (Haala et al, 2011; Ruiz et al, 2013).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
