Obliques

Oblique aerial photography is fast becoming the new ‘must have’ image product to complement vertical aerial photography, which is now regarded by many as an essential information asset. Vertical photography however is only a 2D dataset. Oblique aerial photography on the other hand, when captured in a systematic way and combined with sophisticated viewing and measurement software tools, provides an easy route to 3D measurement and analysis.

Geosense captures oblique imagery using its state of the art A3 camera technology and delivers them with Multivision software resulting in an extremely powerful tool for the viewing, analysis and measurement of the built and natural environment.

Multivision comes complete with a set of built-in tools that enable accurate 3D measurements to be taken. In many cases, this eliminates the need for a site visit. The measurements can be taken directly from the oblique photography using the tools provided, making it possible to ascertain the heights of buildings, street furniture and vegetation, calculate distances and a host of other applications. Multivision can also work seamlessly with a GIS system. For example, a user might be looking at maps or imagery within MapInfo and can then switch back and forth between the two software environments as the need arises.

Case Study MultiVision, an indispensable tool for analysing oblique photography is a PDF case study of a number of Local Authorities who currently use oblique and vertical photography within the MultiVision package.

For as long as most people can remember there has been oblique aerial photography, flown speculatively for the most part by the early pioneers of aerial survey. Often sold by students to householders in the long summer vacations, the original Aerofilms library of oblique imagery has been consigned to history and is now owned by English Heritage. As mapping and photography became digital, the requirement for obliques seemed to fade away.......Click here to download the full version of the MultiVision case study in PDF.

Key Multivision Features

•  View any feature from 5 angles, simultaneously.

o       The Multivision multi-perspective interface allows you to click on any part of the dataset to synchronise all windows to the same area.

• Extract measurements

o       Using the range of tools in Multivision, users can measure spot heights, lengths, areas and perimeters of any feature on an oblique image. Each measurement is automatically highlighted and annotated allowing the user to quickly view the results.

o       Each measurement can also be automatically drawn onto oblique images from different directions.

• Create 3D Building Models

o   With the sophisticated Multivision 3D digitiser, users can create rendered models of buildings that can be exported as SHP, KML and 3DS, for use in packages such as ArcView, Google Earth, Google SketchUp and AutoDesk.

• Quickly create reports

o       Multivision has the ability to capture a screenshot of the current view for use in reports or presentations.

Click here to view our four-part Multivision demonstration

Key Benefits

MultiVision provides:

• A information rich high resolution image data source
• Rapid access to a 3D information source
• The tools for 3D data extraction for virtual reality modelling both geometry and mapped phototextures
• An intuitive data source for the untrained eye
• A 360° view of every location in your area
• Saves time by eliminating or reducing the time spent on site collecting information
• Gives you access to information that in many cases you simply cannot get access to
• Locate, verify, and measure any object, structure, land area, or terrain that you can see without having to make a site visit

Geosense can provide everything a customer needs to take advantage of this new technology including image capture using the latest A3 System, and software licensing for the Multivision solution.

To find out more:

Call us on +27 (0) 21 945 1072 or