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Posts Tagged ‘eCognition’

Tall Opportunity: Flexible technologies and vertical strategies are opening new doors for geographic information

Wednesday, June 1st, 2016

GIS taps into an essential human characteristic: We are visual beings. By providing the ability to show many kinds of data on one map, GIS enables people to visualize and analyze patterns, trends and relationships. It’s transforming the way companies and governments manage assets and activities.

As geospatial professionals, we are familiar with the basic aspects of GIS such as collecting and sharing spatial information. Regardless of how it will be used, data gathering and processing for GIS applications is built around core technologies for positioning and data management. GIS leverages these common characteristics to address an extensive array of needs for information and workflows. More than any other facet of the geospatial industry, GIS faces a wide—and demanding—variety of applications and opportunities.


UAS Takes Off in GIS: Modern approaches to airborne imaging provide flexibility and efficiency in GIS data acquisition

Thursday, February 11th, 2016

Aerial imagery has long been a staple of GIS. By providing viewpoints from high above the ground, aerial images enable people to understand the geographic context of individual features. Orthoimages developed from aerial photographs routinely serve as background maps of terrestrial data for numerous GIS applications. GIS analysts use photogrammetry to develop terrain models and measure specific objects or features. Airborne remote sensing using infrared wavelengths supports GIS in the study of vegetation and thermal characteristics of natural or built objects.


When combined with other data in a GIS, aerial imagery supports a more complete, accurate analysis of a scene. As an example, forest managers can identify areas where homes and buildings are close to overgrown or unhealthy forests that are susceptible to wildfires. The foresters can work with local agencies and property owners to mitigate fire risk and develop emergency plans.


To obtain aerial imagery, GIS professionals can turn either to third-party service providers or in-house resources. Most commercial aerial imagery is captured using manned aircraft equipped with sophisticated cameras or lidar, depending on the type of application and imagery needed for a project. Manned aircraft are typically operated by service providers and offer important benefits such as the ability to cover large areas and fly at high altitudes as well as capture very-high resolution images with advanced, large-format sensors. The results are excellent, but come with tradeoffs. Costs for manned aircraft can be high, and jam-packed flight schedules or changing weather conditions can introduce risk to expected lead time for collection and processing of aerial images.


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