Digitizing features is one of the most time consuming and tedious aspect of compiling GIS data, but also one of the most vital ingredients in creating your GIS database. LAND INFO saves you from this grueling task and allows you to better invest your efforts in other areas.

LAND INFO extracts vector features from topographic maps, satellite imagery, and aerial photography.

Available layers include: • Contours • Roads (Classifications Available) • Hydrography • Buildings (Points and Footprints) • Railroads • Political Boundaries • Any other visible feature

Each layer is output in a vector file format, enabling easy integration with original imagery, maps and other geo-data. LAND INFO also offers feature extraction from satellite imagery. Contact us today for more information.

What are some common uses for Vectors?
• Base Mapping
• Military Applications
• Telecommunication Modeling
• Simulation & Training – Military, Aviation, Urban Planning
• Cartography & Map Publishing

Advantages of using LAND INFO Vector Features:
Accuracy and Quality - Extensive quality control
Extensive Geographic Coverage - Utilizing our worldwide Topographic Map Archive
Affordable - You'll be surprised how much money LAND INFO will save you, not to mention the headaches of data conversion.
Quick Turn-around Times - we will help you meet your deadlines

Vector Generation

LAND INFO uses both automatic and manual methods of extraction. The automatic method uses pixel value interpretation software to trace a vector line over continuous pixels of certain color values. The manual method consists of tracing lines from the source map on a digitizing tablet.

Once the vector features are extracted to line files, they can be attributed to your project specifications. This includes having a separate vector file for every vector feature or combining many vector features into one vector file with appropriate attribution. Specific attribution, such as codes and numeric representation, can be added to the vector files attribution table to easily ingest the data into specific applications.

File Format

• ESRI formats
• Autocad formats
• MapInfo formats
• Microstation formats

(Note:If your desired output is not listed above we can easily convert to proprietary formats.)

Delivery Options

LAND INFO provides several different delivery options:
• FTP
• CD-ROM
• DVD-ROM
• External Firewire/USB 2 Hard Drive

Quality Control

Similar to Topographic Maps and Digital Elevation Models, our Quality Control efforts begin with the source material, whether it is Digital Topographic Maps, Ikonos Satellite Imagery, or DOQQs. Feature Vector Extraction has several areas that need to be checked to assure a quality GIS Data product. This includes accurate digitization from the source material, built topology, and attribution accuracy.

1. The source material is used as a benchmark to ensure that all derived data is accurately captured.
2. All vector files are overlaid on top of their source material and visually inspected by trained technicians to assure that all features are captured accurately.
3. The attributes are verified against the source data and against any client data that is provided to ensure its smooth incorporation into client applications.