Inspections and surveys are one of the first UAV applications that have been embraced by industries that need to inspect assets that are remote or difficult to reach using a vehicle or are inaccessible because of safety hazards. Examples of infrastructure that can be inspected using UAV’s include: oil and gas pipelines, cooling towers, critical infrastructure, transmitter sites (for TV broadcast and mobile networks), transport infrastructure (e.g. bridges and viaducts), land mapping (e.g. agricultural fields, quarries).