Raster Models

 

Raster models

Raster models are where the  irregular point cloud data is converted into a regular grid of elevation heights.

The resolution of the grid is determined by the cell size i.e. the area one height measurement covers for example 1x1m cell.

Raster models are often used in GIS and remote sensing software where the height elevation is going to be used in conjunction with other raster based data such as imagery i.e. orthophotos or satellite imagery.

Two type of raster models are  typically created from lidar data. The Digital Elevation Model ( DEM) from the classified ground points and the  Digital Surface Model  (DSM) from the first return points.

Typical products are –
         - 1m Interpolated raster grids. DEM and DSM