Sökning: "photogrammetry"
Visar resultat 11 - 15 av 21 avhandlingar innehållade ordet photogrammetry.
11. Segmentation of forest patches and estimation of canopy cover using 3D information from stereo photogrammetry
Sammanfattning : 3D information extracted by image matching of aerial images, so called image-based point clouds, have been found to provide accurate vegetation height measurements. This has led to an increased interest from the vegetation mapping community, since aerial images are an affordable alternative to airborne laser scanner (ALS) data. LÄS MER
12. Autonomous bridge inspection based on a generated digital model
Sammanfattning : Railway owners manage geographically dispersed networks comprising major elements of ageing infrastructure that are very susceptible to natural hazards. Consequently, transport agencies must address maintenance issues to guarantee serviceability and safety. LÄS MER
13. Data assimilation of forest variables predicted from remote sensing data
Sammanfattning : Forest information for management planning is today gathered through a combination of field inventories and remote sensing, but the available flow of remote sensing data over time is not yet utilized for continuously improving predictions of forest variables. In the thesis, the utility of data assimilation, in particular the Extended Kalman filter, for forest variable prediction is investigated. LÄS MER
14. Conservation and maintenance of modern buildings. The need of long-term maintenance of building façades in metropolitan housing areas. A model-proposal for documentation, analysis and intervention
Sammanfattning : ABSTRACTMany European towns, as well as conurbations world wide include a significant amount of residential prefabricated buildings from the late 1950s, 60s and 70s. Housing often is concentrated to suburbs as a result of societal planning and development during this period. LÄS MER
15. FRCM-Composites for Strengthening Concrete Walls with Openings : Experimental and Numerical Analysis
Sammanfattning : Upgrading existing buildings to new functional requirements may require new openings that can weaken the structure, prompting the need for strengthening. In such cases, traditional strengthening solutions, such as creating a reinforced concrete or steel frame around the opening, imply long-term restrictions in the use of the structure. LÄS MER