An intelligent geospatial processing unit for image classification based on geographic vector agents (GVAs). Issue 3 (June 2016)

• Record Type: Journal Article
• Authors: Borna, Kambiz; Moore, Antoni B.; Sirguey, Pascal
• Is Part Of: Transactions in GIS. Volume 20:Issue 3(2016)
• Page Start: 368
• Page End: 381
• Publication Date: 2016-06
• Subjects: elastic geometry -- geographical vector agents -- GEOBIA -- image classification -- intelligent processing unit; Geographic information systems -- Periodicals; 910.285
• DOI: 10.1111/tgis.12226
• Languages: English
• ISSNs: 1361-1682

Abstract

Abstract: Spatial modeling methods usually use pixels and image objects as fundamental processing units to address real‐world objects, geo‐objects, in image space. To do this, both pixel‐based and object‐based approaches typically employ a linear two‐staged workflow of segmentation and classification. Pixel‐based methods segment a classified image to address geo‐objects in image space. In contrast, object‐based approaches classify a segmented image to identify geo‐objects from raster datasets. These methods lack the ability to simultaneously integrate the geometry and theme of geo‐objects in image space. This article explores Geographical Vector Agents (GVAs) as an automated and intelligent processing unit to directly address real‐world objects in the process of remote sensing image classification. The GVA is a distinct type of geographic automata characterized by elastic geometry, dynamic internal structure, neighborhoods and their respective rules. We test this concept by modeling a set of objects on a subset IKONOS image and LiDAR DSM datasets without the setting parameters (e.g. scale, shape information), usually applied in conventional Geographic Object‐Based Image Analysis (GEOBIA) approaches. The results show that the GVA approach achieves more than 3.5% improvement for correctness, 2% improvement for quality, although no significant improvement for completeness to GEOBIA, thus demonstrating the competitive performance of GVAs classification.