Glossary of Terms Used in GIS-CAD Industry

2D Drafting: 2D computer graphics is the computer-based generation of digital images-mostly from two-dimensional models (such as 2D geometric models, text, and digital images) and by techniques specific to them.

3D GIS modeling: Ability to represent, manage, manipulate, analyse and support decisions based upon information associated with three dimensional phenomena.

3D Model generation: These techniques visualize more realistic object models than graphic based object models.

3D Drafting: 3D computer graphics (in contrast to 2D computer graphics) are graphics that use a three-dimensional representation of geometric data that is stored in the computer for the purposes of performing calculations and rendering 2D images.

Aerial photography: Aerial photography is the taking of photographs of the ground from an elevated position. The term usually refers to images in which the camera is not supported by a ground-based structure.

Architectural drawings: Drawings made for the design and construction (or documentation of design and construction) of sites, structures, details, fixtures, furnishings, and decorations.

Automated CAD Conversion: Auto-vectorization is a process performed by a software program on raster images of drawings to convert them to vectorized lines, arcs, circles and other primitive shapes such as arrowheads, solids and text.

Aerial Triangulation: Aerial triangulation is a mathematical process used to determine the position and orientation of each photograph at the moment of exposure.

Airport Database Mapping: An Airport Mapping Database contains significant features of an airport such as runways, taxiways, buildings, obstacles and terrain surrounding an airfield.

Agriculture Mapping: A concept map is a good way to visually define and relate agriculture and its effects on lives.

Automated GIS conversion:An automated process that converts raster data into vector features for an entire raster or a portion of it based on user-defined settings.



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