VIDEOGRAPHY

Pipeline and Transmission Corridor Mapping and planning

Site Investigation

Land Use Mapping

Socio-Economic Zoning (and population estimation for utilities planning)

Data can be captured and disseminated in a variety of forms according to the organisations objectives:

georeferenced aerial video in analogue (hardcopy) or digital (CD-ROM or tape) format with GPS coordinates on each frame

variable swath and pixel resolution allows client to determine final resolution (0.3-2.5m)

individual video frames for image processing applications

image maps of individual or mosaiced frames

integration with other digital data including scanned or digitised maps and satellite data

digital terrain models from overlapping frames with ground control

customised GIS and multi-media applications

Airborne videography brings considerable benefits to many organisations concerned with the monitoring, mapping and planning of assets and facilities, land and environment:

quick to acquire

coverage is easily planned, directed and revised

all equipment for implementation is portable and does not require special aircraft

flight-lines can be based on predetermined coordinate files

very high spatial resolutions are achievable

visual, infrared and thermal imaging can all be carried out

imaging occurs when the client determines

in-flight monitoring ensures complete cover and minimum flying time

replicable for monitoring purposes

surveys are a fraction of the cost of conventional aerial photography

low-flying height and flexible imaging parameters minimise stand-by time

results are easily imported and processed in image processing and GIS systems

solutions can be customised to client objectives using GIS or multi-media products

Further technical information regarding procedures and methodologies can be obtained from GISL Limited. There are a number of pre-requisites that are usefully addressed by the client prior to execution; these include:

provision of seasonal and daily weather patterns for area of interest at time of imaging

identification of potential aircraft chartering facilities

clear statement of objectives and desired outputs

area of interest

period of interest

other data acquisition requirements including field data and satellite imagery

Such information allows a preliminary assessment of feasibility, costs and alternatives to be made and for the client to benefit from the underlying motivation of the Consortium, to provide a cost-effective solution to the stated objectives.

In essence GIS is a decision support tool that allows the planner to visualise a real-world situation and to develop and evaluate options to achieve objectives and satisfy goals. In this context airborne video simply becomes another tool available to achieve the desired objectives. For an organisation in natural resources these may include land use planning, environmental appraisal or habitat mapping; for a utility these may include corridor routing, asset management, facilities mapping, expansion planning and emergency response procedures.

Such activities might entail the integration of historical data with ever-changing data from systems monitoring both the demand and the supply of the relevant resource such as tidal, fluvial, borehole, atmospheric and environmental. Identification of objectives and requirements is the first stage in the GIS project cycle where for effective implementation the systems are built around the real and potential needs of the client.

GISL Limited brings together the resources, skills and experience to offer a "one-stop" consultancy solution to the client and provides the full range of expertise and resources necessary to design and execute projects and programmes where data capture, processing, analysis and dissemination are critical. These services include technical assistance, system specification and installation, pilot studies, in-house data processing and output as well as offering fundamental GIS roles such as needs assessment, systems analysis and training.

By adopting a solution based method within which client objectives are clearly identified GISL retain a highly flexible approach that works with and for the client. Thus, airborne videography and other techniques and technologies become an integral part of the optimal solution only where pertinent.