Photogrammetry

Photogrammetry is the process of deriving metric information about an object through measurement made on the photograph of the object. It is a surveying and mapping technique used to model a territory or an object in 3D, using images taken from different points of view. The output of photogrammetry is typically a map, drawing, measurement, or a 3D model of some real-world object or scene. Many of the maps that engineers, planners, developers and decision makers use today, are created with photogrammetry and aerial imagery, as a common language to help communicate complex concepts or problems. There are many uses of photogrammetry in the surveying industry such as topographic mapping, earthwork volumes, site planning, production of digital elevation models (DEM) and orthophoto maps. Aerial photogrammetry complements aerial imagery and airborne LiDAR derived datasets.

There are two types of Photogrammetry, Aerial Photogrammetry and Terrestrial (Close Range) Photogrammetry. Aerial photogrammetry is a method of surveying involving the measurement and interpretation of features directly from aerial photographs. It is useful in a wide range of applications such as topographical mapping, precise mapping of building outlines and roof structures to create 3D urban models, volumetric determination of stockpiles and mine voids, and preparation of land use/land cover maps. AeroPhoto Co Ltd provides aerial photogrammetry services useful in a vast selection of industries such as manufacturing, architecture and forestry. Furthermore, we are able to survey large areas with excellent (pixel) accuracy, in a more efficient and economical way than traditional survey methods.

Aerial photography or imagery provides a record of the earth’s surface at an instant in time and is relied on by all organizations that manage or interact with the natural and built environments. Aerial imagery is mostly used in cartography (particularly in photogrammetric surveys, which are often the basis for topographic maps), land-use planning, environmental studies such as change detection, archaeology, power line inspection and surveillance, or to help assess damage caused by natural disasters and plan future mitigation strategies.

AeroPhoto’s digital aerial cameras allow the infrared spectrum to be captured in addition to conventional visible light, benefiting applications for agricultural, environmental, and forestry purposes. Moreover, high resolution digital aerial cameras coupled to airborne LiDAR systems allow imagery to be captured with LiDAR simultaneously, minimizing project costs and enhancing the quality of geo-products. AeroPhoto Co Ltd continuously invest in the highest-performance, state-of-the-art equipment on the market including sensors and software, in order to optimize accuracy and deliver best quality services.