Moreover, the conventional surveys carried out by each member state use different measurement techniques, are based on different sampling strategies, and are performed at different intervals of time. Remote sensing, by contrast, offers the potential to acquire a consistent and timely source of data on land use on a European-wide basis. One option is to employ standard photo-interpretation skills to analyse the new sources of image data.
Manual interpretation is, however, time-consuming, labourious and, hence, expensive.
U.K. Double click on this figure to reveal the full resolution image. Data courtesy of the Natural Environment Research Council's Airborne Remote Sensing Facility. Thus, we have captured something of the spatial pattern of land cover regions that make up this urban district. Figure 3 Graph visualization of the spatial relation adjacency between the land-cover regions identified in Figure 2. Figure 4 Diagrammatic representation of the information stored in the XRAG data structure.