| The physical constraint between the two spaces corresponds to the condition of collinearity well known in photogrammetry. |
| Such areas of survey work also rely more on modern techniques, such as satellite imagery, digital photogrammetry, and global positioning systems. |
| He and his colleagues borrowed ideas from photogrammetry, a technique used by topographers and aerial surveyors to create three-dimensional views from two-dimensional images. |
| Training in photogrammetry is offered and has promoted the establishment of mapping facilities and programs in many of the collaborating countries. |
| The organization also disseminated information on new techniques and equipment in the fields of surveying, photogrammetry, and cartography. |
| Remote sensing data using satellite images or photogrammetry to analyse land use cover, classification of vegetation and forest inventories. |
