Variaciones métricas entre la topografía convencional y topografía a partir de procesamiento de imágenes obtenidas con dron, aplicando métodos estadísticos

Abstract

The topography is the basis for the beginning, development and completion of any engineering work, where, starting from a terrain modeling, the ability to configure an idea about it is provided; made possible by two of the main survey methods, such as: data capture with conventional topography, station and prism, and aerial imaging with UAV and subsequent digital process. The continuous evolution of the instruments used to carry out these surveys and the search to improve the precision, quality and density of information among other factors, led this project to be in charge of comparing these two procedures, taking into account, from its inception , processing and resulting outputs. And in this way to know the existing variations between its coordinates and digital elevation models, both visually and statistically, determining its effect for practical results. The application of these two methods was carried out in a soccer field built in natural grass, located in the city of Bogotá, specifically in the Marsella neighborhood. With the statistical components and visual comparisons, a notable variation in the height attribute was evidenced, for each of the points obtained between the conventional method and the use of aerial photographs with UAVs. Thus concluding that the two techniques are complementary, with advantages and disadvantages. On the one hand, the traditional topographic survey has high precision bases and results in its components (x, y, z). On the contrary, in the product of aerial images, the elevation is considerably affected, preserving its properties in x, y coordinates.