Obia

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OBIA is also an acronym for (Object Based Image Analysis [1] )

Object-Based Image Analysis (OBIA) is a sub-discipline of GIScience devoted to partitioning remote sensing (RS) imagery into meaningful image-objects, and assessing their characteristics through spatial, spectral and temporal scale. At its most fundamental level, OBIA requires image segmentation, attribution, classification and the ability to query and link individual objects (a.k.a. segments) in space and time. In order to achieve this, OBIA incorporates knowledge from a vast array of disciplines involved in the generation and use of geographic information (GI). It is this unique focus on RS and GI that distinguishes OBIA from related disciplines such as Computer Vision and Biomedical Imaging, where outstanding research exists that may significantly contribute to OBIA.

Emphasis on the GI component has led to the recent development of GEOBIA (GEOgraphic Object Based Image Analysis [2] ). An international conference GEOBIA, 2008 - Pixels, Objects, Intelligence: Geo-Object Based Image Analysis for the 21St Century is planned for August 6-7, 2008 ( [3] ).

A key objective of OBIA is to develop and use appropriate theory, methods and tools sufficient to replicate (and or exceed experienced) human interpretation of RS images in automated/semi-automated ways, that will result in increased repeatability and production, while reducing subjectivity, labour and time costs.

An obia (also spelt obeah) is a monster in West African folklore.

"Obia" or "Obeah" is an indigenous group of African Storytellers that survive in the West Indies.