VirtuoZo Lite, single model version of VirtuoZo, has the basic functions of a digital photogrammetric system, including data management, orientation and image matching, DEM extraction and editing, orthoimage generation, stereo digital mapping, but for orthoimage generation only allowing single stereo model. There also are two independent modules to be linked to it as options: V-MSMapper ¡ªMicroStation interface for stereo digital mapping and V-OrthoMapper ¡ªMicroStation Interface for orthoimage mapping.

Main Functions:

Basic data management

• Data Input and output,
  
• Parameter Setup;
  
• Map Frame Decoration;
  
• 3D Stereo Landscape Display;
  
• Batch Processing;
  
• Fundamental Image Processing Functions;
  
• Automatic Generation of Quality Report;
  

Orientation & Image Matching:

• Full Automatic Inner Orientation and Relative Orientation, Semi-automatic Absolute Orientation;
  
• Epipolar Image Generation.
  
• Pre-processing for Image Matching;
  
• Image Matching;
  
• Height / Parallex Editing.
  

DEM Extraction & Editing:

• DTM/DEM Automatic Extraction
  
• DEM Generation Based on Discrete Points Measured Automatically /Semi-automatically
  
• Automatic DEM Connection;
  
• Automatically Contouring
  
• DEM Input (USGS format);
  
• DEM Generation based on Imported Vector Contours (DXF format)
  

Orthoimage Generation:

• Orthoimage Creation Based on Each Single Image
  
• Orthoimage and Contours Superimposition;
  
• Orthoimage Restoration.
  
• Calculation of External Orientation Parameters based on Single Image;
  

Stereo Digital Mapping:

• Multiple 3D input equipments: handwheels and footdisk, 3D mouse (3D SoftMouse/3D Puck), common mouse.
  
• Stereo observation modes: Reflecting Stereoscope , Flash-shutting stereo viewing systems and polariscope.
  
• Image Roaming or Measuring Marks Roaming;
  
• Customized Symbol Library
  

Main Characteristics:

Basic data management

• Variety of image input/output formats, like TIFF (GeoTIFF), JPEG, BMP, SGI, SunRaster etc.;
  
• Standard Map Frames in various scales, raster & vector formats.
  
• Real time and dynamic operation for 3D stereo landscape and perspective views.
  

Orientation & Image Matching:

• Hundreds of orientation points created in relative orientation automatically.
  
• Epipolar images resampled along original or horizontal.
  
• High image matching speed up to 500-1000 points/sec. on PC. with high reliability
  

DEM Extraction & Editing:

• Pre-processing consumedly improves matching efficiency for the weak areas (less matching reliability).
  
• Fast DEM generation with triangle network and methods of moving curved surface;
  
• Automatic generation of contours and annotation.
  

Orthoimage Generation:

• Various options for ortho-image generation, e.g. Close Nadir Method;
  
• Functions of tone smooth transition, both for color image or B/W one
  
• Orthoimage generation based on DEM from third party.
  

Stereo Digital Mapping:

• Loading multiple image pairs simultaneously, suitable for vector data connection between adjacent image pairs.
  
• Real time superimposition of multiple vector files and stereo models;
  
• Measurements with Sub-pixel Accuracy;
  
• Semi-automatic extraction of linear features (Roads, Buildings etc.)

Option Module

V-MSMapper

Option module of VirtuoZo Lite for feature collection in MicroStation environment based on stereo images pairs.

Main Functions:

• Complete feature collection in MicroStation environment
  
• Multiple 3D input equipments
  
• Convenient shortcut keys and icons
  
• Multiple Stereo observation modes
  
• Superimposing vector data from MircoStation to stereo models
  
• Image Roaming or Measuring Marks Roaming;
  
• Customized Symbol Library
  

Main Characteristics:

• Seamless integration of VirtuoZo and MircoStation;
  
• Measurements with Sub-pixel Accuracy;
  
• Hardware-independent fast and smooth image roaming
  
• MicroStation application extension suitable for feature collection
  

V-OrthoMapper

Option module of VirtuoZo Lite for feature collection in MicroStation environment based on orthoimage.

Main Functions:

• Feature collection based on orthoimage
  
• Customized Symbol Library
  
• Superimposing vector data from MircoStation to orthoimages;
  

Main Characteristics:

• Seamless integration of VirtuoZo and MircoStation;
  
• High productivity and efficiency suitable for smaller map scales