| Term | Definition | Link |
| 2.5D | 2D model (map) where the altitude is encoded in the pixel value. One color corresponds to a given range of elevations. | Wikipedia article |
| AAT | Automatic Aerial Triangulation | Wikipedia article |
| AGL | Above Ground Level | Wikipedia article |
| ATP | Automatic Tie Point | What is the difference between Automatic Tie Points and Manual Tie Points in Pix4Dmapper? |
| BBA | Bundle Block Adjustment | Wikipedia article |
| Check Point (CP) | Point with known coordinates; it is useful for assessing the accuracy of the project. Contrarily to a GCP, the Check Point's coordinates are not used for the optimization procedure. | GCP / Manual Tie Point Table |
| CRS | Coordinate Reference System | Wikipedia article |
| DEM | Digital Elevation Model | Wikipedia article |
| DSM | Digital Surface Model | Wikipedia article |
| DTM | Digital Terrain Model | Wikipedia article |
| FoV | Field of View | Wikipedia article |
| GCP |
Ground Control Point Reference point with measured coordinates. Used to georeference the project. |
|
| Georeference | Assignment of real world coordinates to give position and orientation with respect to the Earth's surface. | Wikipedia article |
| GSD |
Ground Sampling Distance Distance between the centers of two consecutive pixels. This relates to the model's level of detail. |
Ground sampling distance (GSD) |
| IMU | Inertial Measurement Units | Wikipedia article |
| Inlier (concerning uncalibrated cameras) | New match that fits with the 3D data coming from calibrated cameras. | How to manually calibrate uncalibrated Cameras in the rayCloud |
| Keypoint | Characteristic feature (sharp contrast in texture, color, etc...) identified by the software in an image. | |
| LiDAR | Light Detection And Ranging | Wikipedia article |
| MSL | Mean Sea Level | Wikipedia article |
| MTP | Manual Tie Point | What is the difference between Automatic Tie Points and Manual Tie Points in Pix4Dmapper? |
| NDVI | Normalized Difference Vegetation Index | Wikipedia article |
| Orthomosaic | 2D model (map) made by blending several orthophotos. Color balanced to be visually pleasing. | Photo stitching vs orthomosaic generation |
| Orthophoto | Photo that has been corrected for perspective, as if the photo was taken orthogonally from the object. | Wikipedia article |
| Orthoplane | Blend of orthophotos similar to an orthomosaic but projected to any user defined plane. | How to create the orthomosaic of a facade |
| Outlier (concerning uncalibrated cameras) | New match that does not fit with the 3D data coming from calibrated cameras. | How to manually calibrate uncalibrated Cameras in the rayCloud |
| Reflectance map | 2D model (map) that is corrected for perspective and where the value of each pixel faithfully represents the measured object's property. | What is... (a densified point cloud? an orthomosaic? etc.) |
| RTK GPS | Real Time Kinematic | Wikipedia article |
| Textured mesh | 3D model (mesh) made of triangles and having color information (texture). Color balanced to be visually pleasing. | Wikipedia article |
| TMS | Tile Map Service | Wikipedia article |
| LoD Mesh | Level of Details of the 3D Textured Mesh | What is... (a densified point cloud? an orthomosaic? etc.) |
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