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GIS Lexicon - O

3 terms

What are oblique imagery?

Oblique Imagery

Oblique imagery (oblique aerial photos) captures the ground and buildings at an angle, usually around 45°, rather than straight down (nadir). Facades, roof edges, yard boundaries, and objects poorly visible from above —…

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What is OGC?

OGC

OGC (Open Geospatial Consortium) is an international body developing open standards for exchanging geodata over the web. OGC standards let GIS clients, viewers, and servers from different vendors interoperate.

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What is an orthophoto?

Orthophoto

An orthophoto is an aerial image that has been orthorectified: geometric distortion from camera angle and terrain is corrected so scale is uniform across the image and coordinates align with BGT and BRT. Suitable as a…

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