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Project Planning
The type of project, accuracy requirements and budget determine the procedures and equipment we use. Here are the options we consider in planning your project:
Aerial Photography Options:
- Fixed wing conventional film photography
- Helicopter large format digital photography
- Fixed wing large format digital photography
- UAS small format digital photography
Collection of Map Details:
- First order analytical stereo instruments
- Soft-copy digital stereo instruments
- Fixed wing LiDAR DTM collection
- Helicopter LiDAR DTM collection
- Terrestrial mobile LiDAR collection
- Combination of photogrammetry and LiDAR, mobile or airborne.
Useful Information
- Camera
Calibration
M.A.N. RC-30 Calibration Report (PDF 109k) - Aerial
Targets
Instructions related to aerial control points (PDF 247k) - Definitions
Common language definitions of photogrammetric terms (PDF 106k) - Layering Scheme
Typical M.A.N. DXF based translations (PDF 79k) - Legend
DWG examples of common layers, symbols & line types. (ZIP 259 k) - Sample images
"compare.zip" contains a small sample image comparing various resolutions. Photography was exposed at 250'/" and is displayed at pixel sizes of 0.25', 0.5', and 1.0'. The DWG file matches the image boundary and when plotted at 1"=50' is 12"x12". (ZIP 15.3 MB)