VECTOR DATA COLLECTION
The capture of intelligence from aerial survey data.
FROM RASTER TO VECTOR
There are various reasons why high quality imagery isn’t always enough for a project. For one, computers don’t interpret imagery very well so further analysis requires vectors. Depending on the application the conversion from raster to vector can be fully automated, partially automated or completely manual.
VECTORS FOR GEOGRAPHICAL INFORMATION SYSTEMS
In order to derive meaningful information in a GIS environment features need to be collected into a vector format. Information from the image can be attached to these vector features for further analysis as well as other non-spatial data. In this way useful information can be derived through the blending of spatial, non-spatial and image derived data.
Since the conversion of raw digital photograph to map requires accurate elevation data there is always the option of extracting relevant information that relates to heights.
In some instances the display of image data can become too complex and a simplification is required. In these cases a classic topographical map can be derived from the imagery and elevation information. This type of product can be particularly useful to designers and engineers.