FastSCAN is lightweight and ultra-portable.  The entire system is supplied in a briefcase, and setup only takes a few minutes. As a result, it is possible to scan objects onsite, in their natural environments.  The first laser scanner one can easily travel with, FastSCAN sets up almost anywhere, indoor or out.  FastSCAN instantly acquires three dimensional surface images when you sweep the handheld laser scanning wand over an object, in a manner similar to spray painting.  The object's image immediately appears on the computer screen.  As FastSCAN provides real-time visual feedback, monitoring and controlling the scan process is straightforward.

Unlike other scanners, FastSCAN automatically stitches your scans together, saving a great deal of time.  The sweeps list enables turning individual sweeps on and off to facilitate optimizing the amount of data in the final output.  Two different FastSCAN systems are available to accommodate varied scanning requirements and budgets.

Applications for the FastSCAN include:

• Archaeology
• Medical
• Art Creativity & Cultural Preservation
• Metrology
• Entertainment
• Reverse Engineering & Rapid Prototyping
• Forensics
• Wood Working & Custom Manufacture

The Scorpion uses the same technology as the Cobra, casting a fan of laser light over the object, while recording the object to produce a scan.  The Scorpion has two cameras, allowing for more detailed scans in fewer sweeps than the single-camera Cobra.  While scanning an object, the dual cameras on the Scorpion wand view the laser from either side to record surface profiles of the object.

The FastSCAN has an embedded FASTRAK unit, which is used to determine position and orientation, enabling the computer to reconstruct the full three-dimensional surface of the object.  The system accurately scans a wide range of non-metallic, opaque objects from small items such as a hand or figurine, to large items such as a door or sofa.

A reference receiver is provided to enable the scanning of moving objects.  The reference receiver can be attached to a headband to enable scanning a person, or can be adhered to an inanimate object using putty, tape or another method.  The receiver allows you to conveniently reposition inanimate objects to scan hard to reach areas.

Advanced Features

FastSCAN is loaded with advanced features to help realise absolute precision for every scan.  The system works with virtually any PC, and the included software offers a full array of functions including image resizing, point of view shifting and more.  To allow the user to ascertain how much data has been collected, the software incorporates a point cloud view.  Moreover, one can select and delete raw data points from sweeps.  The software also offers numerous scan processing features, such as fine smoothing, which can be used prior to exporting the scan.  3D data can be exported to a host of popular 3D modelling, graphics and CAD programs.

The mechanical and optical stylus options make FastSCAN even more versatile.  The mechanical stylus generates position and orientation markers within the tracker's spatial system.  It is possible to press in with the mechanical stylus, so it can be used to mark points beneath the surface of a person's skin, for example.  Captured data is clearly displayed on-screen.  The optical stylus is built into the wand and turns the FastSCAN into a point digitizer.  The location of the point on the object's surface, and the orientation of the wand are recorded whenever the wand trigger is depressed in laser point mode.

Polhemus offers optional software packages to maximize FastSCAN's capabilities.  The Radial Basis Function (RBF) application automatically fills in holes in scans, producing watertight files, and greatly enhancing the system's functionality.  An add-on for RBF, AAOP enables outputting the O&P medical file format.  Polhemus also offers Sweep Registration software, which tightens up the stitching between individual sweeps for smoother scans.  Scan Through Glass (Refraction Correction) facilitates scanning objects through glass.  DeltaView makes surface and volume measurements on complex 3D shapes.

DeltaView is advanced comparative software for the Polhemus FastSCAN family of handheld laser scanners.  Developed to simplify the process of creating surface and volume measurements on complex 3D shapes, DeltaView works directly with files generated by FastSCAN systems.  DeltaView provides complete workflow solutions to many complex problems.

DeltaView software offers a powerful arsenal of features.  DeltaView lets you precisely compare two scans or measure a single scan.  After registering two different scans of a surface, DeltaView can calculate volume differences, distances and displacement maps.  With a single scan, it can readily calculate volumes of concavity or convexity using advanced 3D interpolation techniques to create a reference surface.  Moreover, DeltaView can precisely interpolate over defects.

For a specific area of interest, it is possible to define appropriate boundaries in order to calculate volume differences.  Cross-sections can also be specified for calculation of linear distances and the display of contours on a selected plane.

When used in the medical field, DeltaView is ideal for such purposes as comparing pre- and post-operative swelling.  It also enables measuring physical anomalies such as an ulcer or keloid, to help formulate a treatment plan.  For applications such as forensics and archaeology, DeltaView facilitates precise image cataloguing, measurement and analysis.

DeltaView incorporates a simple and intuitive graphical user interface with easily recognisable button icons and straightforward tools.  Dual scan windows facilitate easily making A-B scan comparisons.  The interface allows one to determine exactly where landmarks and regions of interest are placed.  A separate window located below the main display contains landmark locations and volumes, as well as other data.

DeltaView clearly presents data to help streamline your workflow.  Once images are registered, a coloured graphical displacement map can be shown on the surface to highlight differences.  A colour bar to the right of the image correlates to the amount of difference in millimetres.

The software can import embedded or user-defined landmarks.  Once landmarks are defined, the system performs highly accurate surface registration using proprietary techniques (patents pending).  Registration is accomplished quickly and easily using both landmark and surface-based algorithms to ensure the best possible results.  DeltaView generates a report in HTML format.  It can be printed or viewed using a Web browser.  The output report includes any landmarks, volumes and sections that have been defined.

The Polhemus Scanning and Digitising Family of Products Web Link: www.polhemus.com