Sökning: "Isak Hast"

Hittade 2 uppsatser innehållade orden Isak Hast.

1. 1. Automating Geographic Object-Based Image Analysis and Assessing the Methods Transferability : A Case Study Using High Resolution Geografiska SverigedataTM Orthophotos

   Magister-uppsats, Högskolan i Gävle/Samhällsbyggnad, GIS

   Författare :Isak Hast; Asmelash Mehari; [2016]
   Nyckelord :automatic training area selection; scale parameterisation; multiresolution segmentation; classification rule-sets; positional accuracy;

   Sammanfattning : Geographic object-based image analysis (GEOBIA) is an innovative image classification technique that treats spatial features in an image as objects, rather than as pixels; thus resembling closer to that of human perception of the geographic space. However, the process of a GEOBIA application allows for multiple interpretations. LÄS MER

3. 2. Quality Assessment of Spatial Data: Positional Uncertainties of the National Shoreline Data of Sweden

   Kandidat-uppsats, Högskolan i Gävle/Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

   Författare :Isak Hast; [2014]
   Nyckelord :spatial data; NSL; positional accuracy; uncertainty; quality; RMSE;

   Sammanfattning : This study investigates on the planimetric (x, y) positional accuracy of the National Shoreline (NSL) data, produced in collaboration between the Swedish mapping agency Lantmäteriet and the Swedish Maritime Administration (SMA). Due to the compound nature of shorelines, such data is afflicted by substantial positional uncertainties. LÄS MER